| **Fair Value Measurements Level 3 Reconciliation (Details) (USD $)In Millions, unless otherwise specified**                                                                                                                                                  | 12 Months Ended |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------|
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| Guarantees [Member]                                                                                                                                                                                                                                          |            |  |   |  |
| **Fair Value Assets And Liablities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]**                                                                                                                                              |            |  |   |  |
| Balance at beginning of period                                                                                                                                                                                                                               | $ 0             |  |   |  |
| Total gains (losses) (realized/unrealized) included in earnings                                                                                                                                                                                              | 0               | [1] |   |  |
| Purchases, issuances and settlements                                                                                                                                                                                                                         | 6               |  |   |  |
| Balance at end of period                                                                                                                                                                                                                                     | 6               |  |   |  |
| Retained Interest [Member]                                                                                                                                                                                                                                   |            |  |   |  |
| **Fair Value Assets And Liablities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]**                                                                                                                                              |            |  |   |  |
| Balance at beginning of period                                                                                                                                                                                                                               | 53              |  | 291 |  |
| Total gains (losses) (realized/unrealized) included in earnings                                                                                                                                                                                              | 0               | [1] | 4 | [1] |
| Purchases, issuances and settlements                                                                                                                                                                                                                         | (53)            |  | (242) |  |
| Balance at end of period                                                                                                                                                                                                                                     | 0               |  | 53 |  |
| Derivative Assets And Liabilities [Member] | Commodity Contract [Member]                                                                                                                                                                                     |            |  |   |  |
| **Fair Value Assets And Liablities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]**                                                                                                                                              |            |  |   |  |
| Balance at beginning of period                                                                                                                                                                                                                               | 2               |  | 0 |  |
| Total gains (losses) (realized/unrealized) included in earnings                                                                                                                                                                                              | 2               | [1] | 2 | [1] |
| Purchases, issuances and settlements                                                                                                                                                                                                                         | (6)             |  | 0 |  |
| Balance at end of period                                                                                                                                                                                                                                     | (2)             |  | 2 |  |
| Derivative Assets And Liabilities [Member] | Interest Rate Swap [Member]                                                                                                                                                                                     |            |  |   |  |
| **Fair Value Assets And Liablities Measured On Recurring Basis Unobservable Input Reconciliation [Line Items]**                                                                                                                                              |            |  |   |  |
| Balance at beginning of period                                                                                                                                                                                                                               |            |  | 1 |  |
| Total gains (losses) (realized/unrealized) included in earnings                                                                                                                                                                                              |            |  | (1) | [1] |
| Purchases, issuances and settlements                                                                                                                                                                                                                         |            |  | 0 |  |
| Balance at end of period                                                                                                                                                                                                                                     |            |  | $ 0 |  |
|                                                                                                                                                                                                                                                              |
| [1]For interest rate swap assets and liabilities, gains (losses) are included in Interest expense. For commodity contracts, gains (losses) are included in Cost of products sold. For retained interests, gains recognized are included in Finance revenues. |

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Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Gain Loss Included In Earnings
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No definition available.
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| - Definition
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Purchases Issuances Settlements
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No definition available.
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| - Definition
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Value
+ References
No definition available.
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