| **Consolidated Balance Sheet (Supplemental) (USD $)In Millions, unless otherwise specified**               | 12 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                   |          |
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| **Statement of Financial Position [Abstract]**                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                              |     |  |
| Variable Interest Entities Assets Liabilities                                                              | The following table presents the assets and liabilities of our consolidated variable interest entities.  The assets of any variable interest entity can only be used to settle obligations of that respective variable interest entity, and the creditors (or beneficial interest holders) do not have recourse to us or to our other assets.  These assets and liabilities are included in the consolidated balance sheet above. |     |  |
| **ASSETS**                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                              |     |  |
| Finance receivables, net                                                                                   | $ 62,567                                                                                                                                                                                                                                                                                                                                                                                                                          | $ 58,042 |  |
| Investments in operating leases, net                                                                       | 20,384                                                                                                                                                                                                                                                                                                                                                                                                                            | 18,743   |  |
| Other Assets                                                                                               | 1,740                                                                                                                                                                                                                                                                                                                                                                                                                             | 1,727    |  |
| Total assets                                                                                               | 95,302                                                                                                                                                                                                                                                                                                                                                                                                                            | 88,913   |  |
| **LIABILITIES**                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                              |     |  |
| Debt                                                                                                       | 78,832                                                                                                                                                                                                                                                                                                                                                                                                                            | 73,234   |  |
| Other liabilities                                                                                          | 2,677                                                                                                                                                                                                                                                                                                                                                                                                                             | 2,605    |  |
| Total liabilities                                                                                          | 87,745                                                                                                                                                                                                                                                                                                                                                                                                                            | 81,251   |  |
| Variable Interest Entity, Primary Beneficiary [Member]                                                     |                                                                                                                                                                                                                                                                                                                                                                                                                              |     |  |
| **ASSETS**                                                                                                 |                                                                                                                                                                                                                                                                                                                                                                                                                              |     |  |
| Finance receivables, net                                                                                   | 7,556                                                                                                                                                                                                                                                                                                                                                                                                                             | 10,527   | [1] |
| Investments in operating leases, net                                                                       | 434                                                                                                                                                                                                                                                                                                                                                                                                                               | 0        | [1] |
| Other Assets                                                                                               | 12                                                                                                                                                                                                                                                                                                                                                                                                                                | 3        | [1] |
| Total assets                                                                                               | 8,002                                                                                                                                                                                                                                                                                                                                                                                                                             | 10,530   | [1] |
| **LIABILITIES**                                                                                            |                                                                                                                                                                                                                                                                                                                                                                                                                              |     |  |
| Debt                                                                                                       | 7,009                                                                                                                                                                                                                                                                                                                                                                                                                             | 9,789    | [1] |
| Other liabilities                                                                                          | 1                                                                                                                                                                                                                                                                                                                                                                                                                                 | 2        | [1] |
| Total liabilities                                                                                          | $ 7,010                                                                                                                                                                                                                                                                                                                                                                                                                           | $ 9,791  | [1] |
|                                                                                                            |
| [1]  Certain prior period amounts have been reclassified to conform to the current presentation. |

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| - Definition
Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.
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Represents the aggregate of total long-term debt, including current maturities and short-term debt.
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| - Definition
Sum of the carrying amounts as of the balance sheet date of all liabilities that are recognized. Liabilities are probable future sacrifices of economic benefits arising from present obligations of an entity to transfer assets or provide services to other entities in the future.
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| - Definition
Net amount of the investment in a contractual right to receive money on demand or on fixed or determinable dates that is recognized as an asset in the creditor's statement of financial position. Examples include, but are not limited to, credit card receivables, notes receivable and receivables relating to lessor's rights to payments from leases other than operating leases that have been recorded as assets. Excludes trade accounts receivable with contractual maturity of one year or less and arose from the sale of goods or services.
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The aggregate carrying amounts, as of the balance sheet date, of assets not separately disclosed in the balance sheet.
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The aggregate carrying amount, as of the balance sheet date, of liabilities not separately disclosed in the balance sheet.
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| - Definition
The amount of property, by major property class, net of accumulated depreciation, subject to or available for lease as of the balance sheet date.
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