| **Financial Instruments and Commodity Contracts - Derivative Financial Instruments (Details) - USD ($) $ in Millions** | 3 Months Ended | 6 Months Ended |
|------------------------------------------------------------------------------------------------------------------------|----------------|----------------|
||
| **Derivative [Line Items]**                                                                                            |           |           |   |   |
| Derivative Instruments,Derivative, Gain (Loss) on Derivative, Net                                                      | $ 2            | $ 4            | $ (2) | $ (9) |
| Cross currency swaps | Other Income Expense Net [Member]                                                               |           |           |   |   |
| **Derivative [Line Items]**                                                                                            |           |           |   |   |
| Derivative Instruments,Derivative, Gain (Loss) on Derivative, Net                                                      | 0              | (1)            | 0 | (3) |
| Foreign Exchange Contract [Member] | Other Income Expense Net [Member]                                                 |           |           |   |   |
| **Derivative [Line Items]**                                                                                            |           |           |   |   |
| Derivative Instruments,Derivative, Gain (Loss) on Derivative, Net                                                      | (5)            | 0              | (4) | (1) |
| Commodity Contract [Member] | Cost of Sales [Member]                                                                   |           |           |   |   |
| **Derivative [Line Items]**                                                                                            |           |           |   |   |
| Derivative Instruments,Derivative, Gain (Loss) on Derivative, Net                                                      | $ 7            | $ 5            | $ 2 | $ (5) |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5618551-113959Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=64837297&loc=SL5624171-113959
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| X                                                                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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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| X                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                           |
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| X                                                                                                                                                                  |
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| X                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                     |
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