| **Fair Value Measurements - Carrying Values and Estimated Fair Values of Financial Instruments (Details) (USD $)In Millions, unless otherwise specified**                                                                                                                     | Oct. 31, 2012 | Oct. 31, 2011 |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|---------------|---------------|
| Carrying Value [Member]                                                                                                                                                                                                                                                       |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           | $ 618         |               | $ 958 |  |
| Notes receivable                                                                                                                                                                                                                                                              | 27            |               | 47 |  |
| Carrying Value [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                                                                            |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 872           |               | 967 |  |
| Carrying Value [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 520           | [1]           | 497 | [1] |
| Carrying Value [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                                                                |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 60            |               | 94 |  |
| Carrying Value [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                                                                            |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 136           |               | 114 |  |
| Carrying Value [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 225           |               | 225 |  |
| Carrying Value [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 30            |               | 40 |  |
| Carrying Value [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                                                             |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 67            |               | 39 |  |
| Carrying Value [Member] | Manufacturing [Member] | Bank Revolvers [Member]                                                                                                                                                                                                    |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 991           |               |   |  |
| Carrying Value [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                                                                 |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 994           |               | 1,664 |  |
| Carrying Value [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                                                                    |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 763           |               | 1,072 |  |
| Carrying Value [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                                                                  |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 31            |               | 70 |  |
| Carrying Value [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                                                                |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 78            |               | 70 |  |
| Estimated Fair Value [Member]                                                                                                                                                                                                                                                 |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           | 613           |               | 954 |  |
| Notes receivable                                                                                                                                                                                                                                                              | 27            |               | 47 |  |
| Estimated Fair Value [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 899           |               | 1,131 |  |
| Estimated Fair Value [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 514           | [1]           | 633 | [1] |
| Estimated Fair Value [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                                                          |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 60            |               | 88 |  |
| Estimated Fair Value [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 102           |               | 112 |  |
| Estimated Fair Value [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                                                             |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 234           |               | 234 |  |
| Estimated Fair Value [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                                                             |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 29            |               | 39 |  |
| Estimated Fair Value [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 67            |               | 26 |  |
| Estimated Fair Value [Member] | Manufacturing [Member] | Bank Revolvers [Member]                                                                                                                                                                                              |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 1,047         |               |   |  |
| Estimated Fair Value [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                                                           |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 994           |               | 1,695 |  |
| Estimated Fair Value [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                                                              |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 734           |               | 1,091 |  |
| Estimated Fair Value [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                                                            |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 31            |               | 70 |  |
| Estimated Fair Value [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                                                          |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 79            |               | 70 |  |
| Fair Value, Inputs, Level 1 [Member]                                                                                                                                                                                                                                          |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           | 0             |               |   |  |
| Notes receivable                                                                                                                                                                                                                                                              | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 899           |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                                                        |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 514           | [1]           |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                                                |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Manufacturing [Member] | Bank Revolvers [Member]                                                                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                                                    |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 31            |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member]                                                                                                                                                                                                                |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           |          |               | 0 |  |
| Notes receivable                                                                                                                                                                                                                                                              |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 1,131 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                              |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 633 | [1] |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                         |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                            |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                            |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                          |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                             |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                           |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 70 |  |
| Fair Value, Inputs, Level 1 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                         |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member]                                                                                                                                                                                                                                          |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           | 0             |               |   |  |
| Notes receivable                                                                                                                                                                                                                                                              | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                                                        |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             | [1]           |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 234           |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                                                |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Manufacturing [Member] | Bank Revolvers [Member]                                                                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                                                    |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member]                                                                                                                                                                                                          |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           |          |               | 0 |  |
| Notes receivable                                                                                                                                                                                                                                                              |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                        |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 | [1] |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 234 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                    |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 2 [Member] | Estimated Fair Value [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 3 [Member]                                                                                                                                                                                                                                          |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           | 613           |               |   |  |
| Notes receivable                                                                                                                                                                                                                                                              | 27            |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                                                        |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             | [1]           |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 60            |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                                                               |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 102           |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 29            |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                                                |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 67            |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Manufacturing [Member] | Bank Revolvers [Member]                                                                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 1,047         |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                                                    |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 994           |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                                                       |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 734           |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 0             |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                                                   |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          | 79            |               |   |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member]                                                                                                                                                                                                                |          |               |   |  |
| **Assets**                                                                                                                                                                                                                                                                    |          |               |   |  |
| Finance receivables                                                                                                                                                                                                                                                           |          |               | 954 |  |
| Notes receivable                                                                                                                                                                                                                                                              |          |               | 47 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Manufacturing [Member] | Notes Payable to Banks [Member]                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Manufacturing [Member] | Convertible Subordinated Debt [Member]                                                                                                                                              |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 | [1] |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Manufacturing [Member] | Debt Of Majority Owned Dealerships [Member]                                                                                                                                         |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 88 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Manufacturing [Member] | Financing Arrangements [Member]                                                                                                                                                     |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 112 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Manufacturing [Member] | Tax Exempt Bond [Member]                                                                                                                                                            |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Manufacturing [Member] | Promissory Note [Member]                                                                                                                                                            |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 39 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Manufacturing [Member] | Other [Member]                                                                                                                                                                      |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 26 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Asset-Backed Debt [Member]                                                                                                                                          |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 1,695 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Bank Revolvers [Member]                                                                                                                                             |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 1,091 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Commercial Paper [Member]                                                                                                                                           |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | 0 |  |
| Fair Value, Inputs, Level 3 [Member] | Carrying Value [Member] | Financial Services Operations [Member] | Borrowings Secured By Operating and Finance Leases [Member]                                                                                                         |          |               |   |  |
| **Liabilities**                                                                                                                                                                                                                                                               |          |               |   |  |
| Debt                                                                                                                                                                                                                                                                          |          |               | $ 70 |  |
|                                                                                                                                                                                                                                                                               |
| [1]The carrying value represents the consolidated financial statement amount of the debt which excludes the allocation of the conversion feature to equity, while the fair value is based on quoted market prices for the convertible note which includes the equity feature. |

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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents loan receivable as presented on the statement of financial position which may include mortgage loans held for investment, finance receivables held for investment, policy loans on insurance contracts, or any other loans which are due the Company as of the balance sheet date.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Glossary Loan -URI http://asc.fasb.org/extlink&oid=6517073Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 114 -Paragraph 4 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.
+ Details**Name:**us-gaap_LoansReceivableFairValueDisclosure**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**instant |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.
+ References
No definition available.
+ Details**Name:**us-gaap_LongTermDebtFairValue**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**instant |
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|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. An amount representing an agreement for an unconditional promise by the maker to pay the Company (holder) a definite sum of money at a future date(s).
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.3(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 3 -Subparagraph b -Article 5
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