| **Postretirement Benefits - Fair Value of the Pension and Other Postretirement Benefit Plan Assets by Category (Details) (USD $)In Millions, unless otherwise specified**                                                                                                                                                                                                                                                                                                                                                                                                                                 | Oct. 31, 2013 | Oct. 31, 2012 | Oct. 31, 2011 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|---------------|
| Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | $ 447         |               | $ 437         |  | $ 463 |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 446           | [1]           | 436           | [1] |   |
| Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 2,519         |               | 2,411         |  | 2,392 |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 2,574         | [2]           | 2,461         | [2] |   |
| Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 216           | [1]           | 262           | [1] |   |
| Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 1,154         | [2]           | 1,250         | [2] |   |
| Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 183           | [1]           | 132           | [1] |   |
| Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 1,300         | [2]           | 1,003         | [2] |   |
| Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 47            | [1]           | 42            | [1] |   |
| Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 120           | [2]           | 208           | [2] |   |
| Cash and Cash Equivalents | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 32            |               | 31            |  |   |
| Cash and Cash Equivalents | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 107           |               | 85            |  |   |
| Cash and Cash Equivalents | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 32            |               | 31            |  |   |
| Cash and Cash Equivalents | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 107           |               | 85            |  |   |
| Cash and Cash Equivalents | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Cash and Cash Equivalents | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Cash and Cash Equivalents | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Cash and Cash Equivalents | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Large Cap | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 28            |               | 82            |  |   |
| U.S. Large Cap | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 207           |               | 463           |  |   |
| U.S. Large Cap | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 28            |               | 82            |  |   |
| U.S. Large Cap | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 207           |               | 463           |  |   |
| U.S. Large Cap | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Large Cap | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Large Cap | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Large Cap | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Small-Mid Cap | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 69            |               | 64            |  |   |
| U.S. Small-Mid Cap | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 350           |               | 271           |  |   |
| U.S. Small-Mid Cap | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 69            |               | 64            |  |   |
| U.S. Small-Mid Cap | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 350           |               | 271           |  |   |
| U.S. Small-Mid Cap | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Small-Mid Cap | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Small-Mid Cap | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| U.S. Small-Mid Cap | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Canadian | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 93            |               | 108           |  |   |
| Canadian | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 93            |               | 108           |  |   |
| Canadian | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Canadian | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| International | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 65            |               | 63            |  |   |
| International | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 254           |               | 186           |  |   |
| International | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 65            |               | 63            |  |   |
| International | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 254           |               | 186           |  |   |
| International | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| International | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| International | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| International | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Emerging Markets | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 22            |               | 22            |  |   |
| Emerging Markets | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 105           |               | 101           |  |   |
| Emerging Markets | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 22            |               | 22            |  |   |
| Emerging Markets | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 105           |               | 101           |  |   |
| Emerging Markets | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Emerging Markets | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Emerging Markets | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Emerging Markets | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Equity derivative | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | (72)          |               | 4             |  |   |
| Equity derivative | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Equity derivative | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Equity derivative | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | (72)          |               | 4             |  | 0 |
| Corporate Bonds | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 52            |               | 49            |  |   |
| Corporate Bonds | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 494           |               | 136           |  |   |
| Corporate Bonds | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Corporate Bonds | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Corporate Bonds | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 52            |               | 49            |  |   |
| Corporate Bonds | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 494           |               | 136           |  |   |
| Corporate Bonds | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Corporate Bonds | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Government Bonds | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 43            |               | 66            |  |   |
| Government Bonds | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 147           |               | 547           |  |   |
| Government Bonds | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Government Bonds | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Government Bonds | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 43            |               | 66            |  |   |
| Government Bonds | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 147           |               | 547           |  |   |
| Government Bonds | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Government Bonds | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Asset Backed Securities | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 4             |               | 4             |  |   |
| Asset Backed Securities | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 8             |               | 9             |  |   |
| Asset Backed Securities | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Asset Backed Securities | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Asset Backed Securities | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 4             |               | 4             |  |   |
| Asset Backed Securities | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 8             |               | 9             |  |   |
| Asset Backed Securities | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Asset Backed Securities | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mortgage Backed Securities | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mortgage Backed Securities | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 1             |  |   |
| Mortgage Backed Securities | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mortgage Backed Securities | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mortgage Backed Securities | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mortgage Backed Securities | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 1             |  |   |
| Mortgage Backed Securities | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mortgage Backed Securities | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Fixed income derivative | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | (13)          |               | 19            |  |   |
| Fixed income derivative | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Fixed income derivative | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Fixed income derivative | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | (13)          |               | 19            |  | 0 |
| Common Stock | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 71            |               | 0             |  |   |
| Common Stock | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Common Stock | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 71            |               | 0             |  |   |
| Common Stock | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Common and Preferred Stock | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 583           |               | 244           |  |   |
| Common and Preferred Stock | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Common and Preferred Stock | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 583           |               | 244           |  |   |
| Common and Preferred Stock | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Commodities | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 13            |               | 13            |  |   |
| Commodities | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 68            |               | 66            |  |   |
| Commodities | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Commodities | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Commodities | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 13            |               | 13            |  |   |
| Commodities | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 68            |               | 66            |  |   |
| Commodities | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Commodities | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Hedge Funds | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 21            |               | 19            |  |   |
| Hedge Funds | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 101           |               | 92            |  |   |
| Hedge Funds | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Hedge Funds | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Hedge Funds | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Hedge Funds | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Hedge Funds | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 21            |               | 19            |  | 25 |
| Hedge Funds | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 101           |               | 92            |  | 99 |
| Private Equity | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 26            |               | 23            |  |   |
| Private Equity | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 103           |               | 92            |  |   |
| Private Equity | Level 1 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Private Equity | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Private Equity | Level 2 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Private Equity | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Private Equity | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                    |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 26            |               | 23            |  | 19 |
| Private Equity | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 103           |               | 92            |  | 75 |
| Exchange Traded Funds | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 6             |               | 0             |  |   |
| Exchange Traded Funds | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 6             |               | 0             |  |   |
| Exchange Traded Funds | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Exchange Traded Funds | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mutual Funds | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 32            |               | 36            |  |   |
| Mutual Funds | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 32            |               | 36            |  |   |
| Mutual Funds | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Mutual Funds | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Real Estate | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 1             |               | 1             |  |   |
| Real Estate | Level 1 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Real Estate | Level 2 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 0             |               | 0             |  |   |
| Real Estate | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 1             |               | 1             |  | 1 |
| Accounts Receivable [Member] | Level 3 | Other Postretirement Benefit Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 1             |               | 1             |  |   |
| Accounts Receivable [Member] | Level 3 | Pension Plan, Defined Benefit [Member]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |          |               |          |  |   |
| **Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]**                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |          |               |          |  |   |
| Defined Benefit Plan, Fair Value of Plan Assets                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | $ 8           |               | $ 8           |  |   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
| [1](A)For both October 31, 2013 and 2012, the totals exclude $1 million of receivables, which are included in the change in plan asset table.[2](A)For both October 31, 2013 and 2012, the totals exclude $8 million of receivables, which are included in the change in plan assets table. In addition, the table above includes the fair value of Canadian pension assets translated at the exchange rates as of October 31, 2013 and 2012, respectively, while the change in plan asset table includes the fair value of Canadian pension assets translated at historical foreign currency rates. |

| X                                                                                                                                                                                                                                                                                                                    |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Defined Benefit Plan, Fair Value of Plan Assets Excluding Receivables
+ References
No definition available.
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 30 -Section 35 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930
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