| **Accumulated Other Comprehensive Loss - (Details) - USD ($) $ in Millions**             | 6 Months Ended |
|------------------------------------------------------------------------------------------|----------------|
||
| **Accumulated Other Comprehensive Loss [Line Items]**                                    |           |   |
| Beginning Balance                                                                        | $ (1,005)      | $ (749) |
| Other comprehensive income before reclassifications                                      | 51             | (86) |
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | 4              | (7) |
| Deferred taxes                                                                           | (1)            | 3 |
| Ending Balance                                                                           | (951)          |   |
| Pensions and Other Postretirement Benefits                                               |           |   |
| **Accumulated Other Comprehensive Loss [Line Items]**                                    |           |   |
| Beginning Balance                                                                        | (261)          | (246) |
| Other comprehensive income before reclassifications                                      | 11             | 5 |
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | 4              | (7) |
| Deferred taxes                                                                           | (1)            | 3 |
| Foreign Currency Translation Adjustments                                                 |           |   |
| **Accumulated Other Comprehensive Loss [Line Items]**                                    |           |   |
| Beginning Balance                                                                        | (744)          | (503) |
| Other comprehensive income before reclassifications                                      | 40             | (91) |
| Reclassification from Accumulated Other Comprehensive Income, Current Period, before Tax | 0              | 0 |
| Deferred taxes                                                                           | $ 0            | $ 0 |

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| - Definition
Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.
+ References
No definition available.
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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).
+ References
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| - Definition
Amount of tax expense (benefit) allocated to other comprehensive income (loss).
+ References
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| - Definition
Amount before tax of reclassification adjustments of other comprehensive income (loss).
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