| **Restructuring and Impairments - North American Manufacturing Restructuring (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended | 12 Months Ended | 3 Months Ended | 18 Months Ended | 3 Months Ended | 18 Months Ended | 3 Months Ended |
|-----------------------------------------------------------------------------------------------------------------------------------------|----------------|-----------------|----------------|-----------------|----------------|-----------------|----------------|
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| **Restructuring Cost and Reserve [Line Items]**                                                                                         |           |            |           |            |           |            |           |   |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Restructuring charges                                                                                                                   |           | $ 108           | $ 92           | $ (15)          |           |            |           | $ 50 | $ 11 | $ 4 | $ 8 | $ 7 | $ 34 |   | $ 8 |   |   |   |   |   |   |
| Restructuring and Related Cost, Expected Cost                                                                                           |           |            |           |            |           |            |           |   |   |   |   |   |   |   |   |   | 30 | 30 | 70 | 50 |   |
| Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments                                                                    |           |            |           |            |           |            |           |   |   |   |   |   |   |   |   |   |   |   |   |   | 8 |
| Postemployment Benefits, Period Expense                                                                                                 |           |            |           |            |           |            |           |   |   |   |   |   |   | 2 |   | 2 |   |   |   |   |   |
| Impairment of Intangible Assets (Excluding Goodwill)                                                                                    | $ 54           | $ 44            | $ 75           | $ 0             | $ 28           | $ 51            | $ 10           |   |   |   |   |   |   |   |   |   |   |   |   |   |   |

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| - Definition
The amount of net gain (loss) recognized in net periodic benefit cost as a result of an event that significantly reduces the expected years of future service of present employees or eliminates for a significant number of employees the accrual of defined benefits for some or all of their future services.
+ References
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| - Definition
The amount of impairment loss recognized in the period resulting from the write-down of the carrying amount of an intangible asset (excluding goodwill) to fair value.
+ References
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| - Definition
Period expense related to postemployment benefits.
+ References
No definition available.
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| - Definition
Amount expected to be charged against earnings in the current and future periods for the specified restructuring cost.
+ References
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| - Definition
Amount charged against earnings in the period for incurred and estimated costs associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, excluding asset retirement obligations.
+ References
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