| **Segment and Geographic Information (Details) - USD ($) $ in Millions** | 3 Months Ended | 12 Months Ended |
|--------------------------------------------------------------------------|----------------|-----------------|
||
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        | $ 642          | $ 651           | $ 659 | $ 643 | $ 648 | $ 653 | $ 683 | $ 689 | $ 2,595 | $ 2,673 | $ 2,885 |
| Profit before income taxes                                               | 122            | $ 146           | $ 148 | $ 145 | 129 | $ 153 | $ 150 | $ 187 | 561 | 619 | 753 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 611 | 593 | 631 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 841 | 836 | 870 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 135 | 119 | 139 |
| Assets                                                                   | 33,615         |            |   |   | 33,867 |   |   |   | 33,615 | 33,867 | 35,134 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 1,636 | 1,461 | 1,627 |
| Operating Segments                                                       |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 2,547 | 2,638 | 2,853 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 620 | 691 | 810 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 604 | 600 | 641 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 838 | 836 | 870 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 138 | 117 | 141 |
| Assets                                                                   | 32,383         |            |   |   | 32,423 |   |   |   | 32,383 | 32,423 | 33,921 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 1,633 | 1,449 | 1,615 |
| Unallocated                                                              |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 80 | 65 | 60 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | (138) | (101) | (86) |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 116 | 67 | 46 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Assets                                                                   | 1,688          |            |   |   | 1,743 |   |   |   | 1,688 | 1,743 | 1,551 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 0 | 9 | 10 |
| Timing                                                                   |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | (32) | (30) | (28) |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | (12) | (32) | (8) |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 3 | 0 | 0 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | (3) | 2 | (2) |
| Assets                                                                   | 27             |            |   |   | 164 |   |   |   | 27 | 164 | 120 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 3 | 3 | 2 |
| Methodology                                                              |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 91 | 61 | 37 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | (109) | (74) | (56) |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Assets                                                                   | (220)          |            |   |   | (216) |   |   |   | (220) | (216) | (215) |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Inter-segment Eliminations                                               |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| Assets                                                                   | (263)          |            |   |   | (247) |   |   |   | (263) | (247) | (243) |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 0 | 0 | 0 |
| North America | Operating Segments                                       |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 1,230 | 1,156 | 1,067 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 326 | 370 | 355 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 287 | 261 | 240 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 477 | 409 | 361 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 28 | 7 | 3 |
| Assets                                                                   | 14,925         |            |   |   | 14,419 |   |   |   | 14,925 | 14,419 | 13,633 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 1,180 | 1,118 | 1,068 |
| Europe | Operating Segments                                              |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 268 | 284 | 353 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 86 | 96 | 114 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 33 | 31 | 52 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 83 | 76 | 94 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 0 | 3 | 10 |
| Assets                                                                   | 3,834          |            |   |   | 3,758 |   |   |   | 3,834 | 3,758 | 4,276 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 147 | 136 | 133 |
| Asia/Pacific | Operating Segments                                        |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 254 | 285 | 368 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 82 | 65 | 129 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 81 | 100 | 116 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 29 | 21 | 24 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 3 | 29 | 35 |
| Assets                                                                   | 3,620          |            |   |   | 3,923 |   |   |   | 3,620 | 3,923 | 4,766 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 74 | 37 | 34 |
| Latin America and CPF | Operating Segments                               |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 487 | 533 | 594 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 77 | 108 | 144 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 156 | 152 | 166 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 61 | 104 | 118 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 100 | 64 | 62 |
| Assets                                                                   | 7,270          |            |   |   | 7,376 |   |   |   | 7,270 | 7,376 | 7,994 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | 26 | 89 | 111 |
| Mining | Operating Segments                                              |           |            |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                        |           |            |   |   |   |   |   |   |   |   |   |
| External Revenues                                                        |           |            |   |   |   |   |   |   | 308 | 380 | 471 |
| Profit before income taxes                                               |           |            |   |   |   |   |   |   | 49 | 52 | 68 |
| Interest Expense                                                         |           |            |   |   |   |   |   |   | 47 | 56 | 67 |
| Depreciation on equipment leased to others                               |           |            |   |   |   |   |   |   | 188 | 226 | 273 |
| Provision for credit losses                                              |           |            |   |   |   |   |   |   | 7 | 14 | 31 |
| Assets                                                                   | $ 2,734        |            |   |   | $ 2,947 |   |   |   | 2,734 | 2,947 | 3,252 |
| Capital expenditures                                                     |           |            |   |   |   |   |   |   | $ 206 | $ 69 | $ 269 |

| 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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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.
+ References
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of the cost of borrowed funds accounted for as interest expense.
+ 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
Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.
+ References
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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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