| **Segment Information (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended | 6 Months Ended |         |
|----------------------------------------------------------------------------------|----------------|----------------|---------|
||
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | $ 668          | $ 675          | $ 1,336 | $ 1,315 |   |
| Segment Profit                                                                   | 144            | 152            | 314     | 267 |   |
| Interest Expense                                                                 | 198            | 209            | 402     | 413 |   |
| Depreciation on equipment leased to others                                       | 172            | 176            | 341     | 347 |   |
| Provision for credit losses                                                      | 34             | 31             | 53      | 86 |   |
| Segment Assets                                                                   | 32,755         |           | 32,755  |   | 30,112 |
| Capital expenditures                                                             | 457            | 339            | 800     | 519 |   |
| Reportable Segment                                                               |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 658            | 663            | 1,315   | 1,290 |   |
| Segment Profit                                                                   | 176            | 165            | 372     | 293 |   |
| Interest Expense                                                                 | 195            | 203            | 388     | 401 |   |
| Depreciation on equipment leased to others                                       | 171            | 175            | 340     | 345 |   |
| Provision for credit losses                                                      | 29             | 34             | 42      | 88 |   |
| Segment Assets                                                                   | 31,526         |           | 31,526  |   | 28,927 |
| Capital expenditures                                                             | 456            | 336            | 799     | 516 |   |
| North America                                                                    |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 240            | 248            | 478     | 495 |   |
| Segment Profit                                                                   | 65             | 61             | 139     | 103 |   |
| Interest Expense                                                                 | 72             | 80             | 145     | 163 |   |
| Depreciation on equipment leased to others                                       | 69             | 71             | 135     | 141 |   |
| Provision for credit losses                                                      | 5              | 4              | 1       | 26 |   |
| Segment Assets                                                                   | 11,570         |           | 11,570  |   | 11,177 |
| Capital expenditures                                                             | 119            | 159            | 184     | 213 |   |
| Europe and CPF                                                                   |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 113            | 127            | 233     | 251 |   |
| Segment Profit                                                                   | 28             | 14             | 63      | 44 |   |
| Interest Expense                                                                 | 32             | 36             | 66      | 73 |   |
| Depreciation on equipment leased to others                                       | 20             | 23             | 39      | 46 |   |
| Provision for credit losses                                                      | 9              | 27             | 17      | 39 |   |
| Segment Assets                                                                   | 7,281          |           | 7,281   |   | 6,601 |
| Capital expenditures                                                             | 52             | 26             | 143     | 49 |   |
| Asia/Pacific                                                                     |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 95             | 84             | 187     | 155 |   |
| Segment Profit                                                                   | 30             | 32             | 66      | 54 |   |
| Interest Expense                                                                 | 36             | 32             | 67      | 60 |   |
| Depreciation on equipment leased to others                                       | 5              | 5              | 10      | 8 |   |
| Provision for credit losses                                                      | 8              | 5              | 12      | 13 |   |
| Segment Assets                                                                   | 5,254          |           | 5,254   |   | 4,557 |
| Capital expenditures                                                             | 12             | 20             | 70      | 26 |   |
| Latin America                                                                    |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 94             | 89             | 189     | 166 |   |
| Segment Profit                                                                   | 32             | 32             | 66      | 52 |   |
| Interest Expense                                                                 | 32             | 33             | 64      | 61 |   |
| Depreciation on equipment leased to others                                       | 15             | 10             | 29      | 20 |   |
| Provision for credit losses                                                      | 4              | 2              | 7       | 11 |   |
| Segment Assets                                                                   | 4,292          |           | 4,292   |   | 3,947 |
| Capital expenditures                                                             | 28             | 34             | 49      | 74 |   |
| Mining                                                                           |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 116            | 115            | 228     | 223 |   |
| Segment Profit                                                                   | 21             | 26             | 38      | 40 |   |
| Interest Expense                                                                 | 23             | 22             | 46      | 44 |   |
| Depreciation on equipment leased to others                                       | 62             | 66             | 127     | 130 |   |
| Provision for credit losses                                                      | 3              | (4)            | 5       | (1) |   |
| Segment Assets                                                                   | 3,129          |           | 3,129   |   | 2,645 |
| Capital expenditures                                                             | 245            | 97             | 353     | 154 |   |
| Unallocated                                                                      |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 16             | 17             | 32      | 36 |   |
| Segment Profit                                                                   | (23)           | (12)           | (44)    | (25) |   |
| Interest Expense                                                                 | 11             | 3              | 24      | 12 |   |
| Depreciation on equipment leased to others                                       | 1              | 1              | 1       | 2 |   |
| Provision for credit losses                                                      | 0              | (1)            | 1       | 2 |   |
| Segment Assets                                                                   | 1,437          |           | 1,437   |   | 1,350 |
| Capital expenditures                                                             | 0              | 3              | 0       | 3 |   |
| Timing                                                                           |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | (6)            | (5)            | (11)    | (11) |   |
| Segment Profit                                                                   | (11)           | (4)            | (14)    | (3) |   |
| Interest Expense                                                                 | 5              | 7              | 2       | 5 |   |
| Depreciation on equipment leased to others                                       | 0              | 0              | 0       | 0 |   |
| Provision for credit losses                                                      | 5              | (2)            | 10      | (4) |   |
| Segment Assets                                                                   | 7              |           | 7       |   | 67 |
| Capital expenditures                                                             | 1              | 0              | 1       | 0 |   |
| Methodology                                                                      |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 0              | 0              | 0       | 0 |   |
| Segment Profit                                                                   | 2              | 3              | 0       | 2 |   |
| Interest Expense                                                                 | (13)           | (4)            | (12)    | (5) |   |
| Depreciation on equipment leased to others                                       | 0              | 0              | 0       | 0 |   |
| Provision for credit losses                                                      | 0              | 0              | 0       | 0 |   |
| Segment Assets                                                                   | (24)           |           | (24)    |   | 15 |
| Capital expenditures                                                             | 0              | 0              | 0       | 0 |   |
| Inter-segment Eliminations                                                       |           |           |    |   |   |
| **Segment Reporting Information [Line Items]**                                   |           |           |    |   |   |
| Revenues                                                                         | 0              | 0              | 0       | 0 |   |
| Segment Profit                                                                   | 0              | 0              | 0       | 0 |   |
| Interest Expense                                                                 | 0              | 0              | 0       | 0 |   |
| Depreciation on equipment leased to others                                       | 0              | 0              | 0       | 0 |   |
| Provision for credit losses                                                      | 0              | 0              | 0       | 0 |   |
| Segment Assets                                                                   | (191)          |           | (191)   |   | (247) |
| Capital expenditures                                                             | $ 0            | $ 0            | $ 0     | $ 0 |   |

| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cash outflow for purchases on long lived, depreciable tangible personal property, nonconsumable in nature, with finite lives used to generate rental income and the cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.
+ References
No definition available.
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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.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The aggregate financial services revenue and operating interest income earned during the reporting period.
+ References
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|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest.
+ References
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|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The cost of borrowed funds accounted for as interest that was charged against earnings during the period.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The total depreciation charge recorded for property subject to or held for lease.
+ References
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|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The sum of the periodic provision charged to operations, based on an assessment of the uncollectibility of the loan and lease portfolio, the offset to which is either added to or deducted from the allowance account for the purpose of reducing loan receivable and leases to an amount that approximates their net realizable value (the amount expected to be collected).
+ References
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| X                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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