| **Segment Information (Details) (USD $)In Millions, unless otherwise specified** | 3 Months Ended | 12 Months Ended |
|----------------------------------------------------------------------------------|----------------|-----------------|
||
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         | $ 679          | $ 678           | $ 668 | $ 668 | $ 662 | $ 668 | $ 675 | $ 640 | $ 633 | $ 640 | $ 648 | $ 631 | $ 2,693 | $ 2,645 | $ 2,552 |
| Segment Profit                                                                   | 124            | 153             | 144 | 170 | 111 | 126 | 152 | 115 | 74 | 89 | 95 | 71 | 591 | 504 | 329 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 801 | 827 | 917 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 688 | 690 | 690 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 161 | 176 | 213 |
| Segment Assets                                                                   | 34,742         |            |   |   | 30,112 |   |   |   | 28,752 |   |   |   | 34,742 | 30,112 | 28,752 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 1,660 | 1,190 | 959 |
| North America                                                                    |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 950 | 966 | 985 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 258 | 221 | 46 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 288 | 314 | 380 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 274 | 276 | 302 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 15 | 34 | 120 |
| Segment Assets                                                                   | 11,945         |            |   |   | 11,177 |   |   |   | 11,111 |   |   |   | 11,945 | 11,177 | 11,111 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 565 | 530 | 512 |
| Europe and CPF                                                                   |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 466 | 502 | 498 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 97 | 53 | 79 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 122 | 148 | 182 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 76 | 89 | 92 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 65 | 105 | 50 |
| Segment Assets                                                                   | 7,598          |            |   |   | 6,601 |   |   |   | 6,884 |   |   |   | 7,598 | 6,601 | 6,884 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 243 | 118 | 120 |
| Asia/Pacific                                                                     |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 399 | 333 | 441 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 142 | 111 | 96 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 145 | 130 | 138 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 23 | 16 | 133 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 24 | 28 | 25 |
| Segment Assets                                                                   | 5,956          |            |   |   | 4,557 |   |   |   | 4,315 |   |   |   | 5,956 | 4,557 | 4,315 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 133 | 42 | 21 |
| Latin America                                                                    |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 389 | 350 | 297 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 122 | 110 | 101 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 130 | 128 | 121 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 64 | 47 | 29 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 26 | 17 | 9 |
| Segment Assets                                                                   | 4,817          |            |   |   | 3,947 |   |   |   | 3,391 |   |   |   | 4,817 | 3,947 | 3,391 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 172 | 175 | 109 |
| Mining                                                                           |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 451 | 446 | 252 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 61 | 76 | 48 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 90 | 87 | 62 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 250 | 260 | 131 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 27 | 3 | (3) |
| Segment Assets                                                                   | 3,225          |            |   |   | 2,645 |   |   |   | 1,523 |   |   |   | 3,225 | 2,645 | 1,523 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 545 | 321 | 156 |
| Total Segments                                                                   |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 2,655 | 2,597 | 2,473 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 680 | 571 | 370 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 775 | 807 | 883 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 687 | 688 | 687 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 157 | 187 | 201 |
| Segment Assets                                                                   | 33,541         |            |   |   | 28,927 |   |   |   | 27,224 |   |   |   | 33,541 | 28,927 | 27,224 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 1,658 | 1,186 | 918 |
| Unallocated                                                                      |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 62 | 70 | 104 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | (93) | (55) | (19) |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 46 | 22 | 28 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 1 | 2 | 3 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 2 | 0 |
| Segment Assets                                                                   | 1,409          |            |   |   | 1,350 |   |   |   | 1,617 |   |   |   | 1,409 | 1,350 | 1,617 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 3 | 40 |
| Timing                                                                           |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | (24) | (22) | (25) |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | (11) | (6) | (31) |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 5 | 12 | 14 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 4 | (13) | 12 |
| Segment Assets                                                                   | 17             |            |   |   | 67 |   |   |   | 113 |   |   |   | 17 | 67 | 113 |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 2 | 1 | 1 |
| Methodology                                                                      |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 15 | (6) | 9 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | (25) | (14) | (8) |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Segment Assets                                                                   | (61)           |            |   |   | 15 |   |   |   | (21) |   |   |   | (61) | 15 | (21) |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Inter-segment Eliminations                                                       |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| **Segment Reporting Information**                                                |           |            |   |   |   |   |   |   |   |   |   |   |   |   |   |
| Revenues                                                                         |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Segment Profit                                                                   |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Interest Expense                                                                 |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Depreciation on equipment leased to others                                       |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Provision for credit losses                                                      |           |            |   |   |   |   |   |   |   |   |   |   | 0 | 0 | 0 |
| Segment Assets                                                                   | (164)          |            |   |   | (247) |   |   |   | (181) |   |   |   | (164) | (247) | (181) |
| Capital expenditures                                                             |           |            |   |   |   |   |   |   |   |   |   |   | $ 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
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Concepts (CON) -Number 6 -Paragraph 25 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.  This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682
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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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+ Details**Name:**us-gaap_FinancialServicesRevenue**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - 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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+ Details**Name:**us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**credit**Period Type:**duration |
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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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+ Details**Name:**us-gaap_OperatingLeasesIncomeStatementDepreciationExpenseOnPropertySubjectToOrHeldForLease**Namespace Prefix:**us-gaap_**Data Type:**xbrli:monetaryItemType**Balance Type:**debit**Period Type:**duration |
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Provision charged for the period based on estimated losses to be realized from loan and lease transactions.
+ References
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| X                                                                                                                                                                        |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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