| **Stockholders' Deficit Accumulated Other Comprehensive Income (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended | 9 Months Ended |
|---------------------------------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **Accumulated Other Comprehensive Income (Loss) [Line Items]**                                                            |           |           |
| Accumulated Other Comprehensive Loss, Beginning Balance                                                                   | $ (1,788)      | $ (1,824)      |
| Other comprehensive loss before reclassifications                                                                         | 4              | (12)           |
| Amounts reclassified out of accumulated other comprehensive loss                                                          | 26             | 78             |
| Net current-period other comprehensive income (loss)                                                                      | 30             | 66             |
| Accumulated Other Comprehensive Loss, Ending Balance                                                                      | (1,758)        | (1,758)        |
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax                                  | 27             | 79             |
| Prior Service Costs [Member] | Selling, General and Administrative Expenses [Member]                                      |           |           |
| **Accumulated Other Comprehensive Income (Loss) [Line Items]**                                                            |           |           |
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax                                  | (1)            | (3)            |
| Unrecognized (Gains) Losses, Net [Member] | Selling, General and Administrative Expenses [Member]                         |           |           |
| **Accumulated Other Comprehensive Income (Loss) [Line Items]**                                                            |           |           |
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax                                  | 28             | 82             |
| Accumulated Translation Adjustment [Member]                                                                               |           |           |
| **Accumulated Other Comprehensive Income (Loss) [Line Items]**                                                            |           |           |
| Accumulated Other Comprehensive Loss, Beginning Balance                                                                   | (89)           | (75)           |
| Other comprehensive loss before reclassifications                                                                         | (3)            | (17)           |
| Amounts reclassified out of accumulated other comprehensive loss                                                          | 0              | 0              |
| Net current-period other comprehensive income (loss)                                                                      | (3)            | (17)           |
| Accumulated Other Comprehensive Loss, Ending Balance                                                                      | (92)           | (92)           |
| Pension Plan, Defined Benefit [Member]                                                                                    |           |           |
| **Accumulated Other Comprehensive Income (Loss) [Line Items]**                                                            |           |           |
| Accumulated Other Comprehensive Loss, Beginning Balance                                                                   | (1,699)        | (1,749)        |
| Other comprehensive loss before reclassifications                                                                         | 7              | 5              |
| Amounts reclassified out of accumulated other comprehensive loss                                                          | 26             | 78             |
| Net current-period other comprehensive income (loss)                                                                      | 33             | 83             |
| Accumulated Other Comprehensive Loss, Ending Balance                                                                      | (1,666)        | (1,666)        |
| Other Comprehensive Income (Loss), Tax                                                                                    | $ (1)          | $ (1)          |

| X                                                                                                                                                                                    |
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.
+ References
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| - Definition
Amount after tax, before reclassification adjustments of other comprehensive income (loss).
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No definition available.
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| - Definition
Amount after tax and reclassification adjustments of other comprehensive income (loss).
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of tax expense (benefit) allocated to other comprehensive income (loss).
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Amount before tax of reclassification adjustments of other comprehensive income (loss).
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No definition available.
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Amount after tax of reclassification adjustments of other comprehensive income (loss).
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No definition available.
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