| **Financing Activities (Details 2) (USD $)In Millions, unless otherwise specified** | 12 Months Ended |
|-------------------------------------------------------------------------------------|-----------------|
||
| Customer                                                                            |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment With No Allowance Recorded                                      | $ 446           | $ 378 | $ 326 |
| Unpaid Principal Balance With No Allowance Recorded                                 | 443             | 377 | 317 |
| Related Allowance With No Allowance Recorded                                        | 0               | 0 | 0 |
| Recorded Investment With An Allowance Recorded                                      | 183             | 215 | 158 |
| Unpaid Principal Balance With An Allowance Recorded                                 | 178             | 207 | 154 |
| Related Allowance                                                                   | 70              | 54 | 34 |
| Recorded Investment, Total                                                          | 629             | 593 | 484 |
| Unpaid Principal Balance, Total                                                     | 621             | 584 | 471 |
| Related Allowance, Total                                                            | 70              | 54 | 34 |
| Average Recorded Investment With No Allowance Recorded                              | 421             | 332 | 345 |
| Interest Income Recognized With No Allowance Recorded                               | 12              | 6 | 12 |
| Average Recorded Investment With An Allowance Recorded                              | 238             | 188 | 159 |
| Interest Income Recognized With An Allowance Recorded                               | 6               | 5 | 3 |
| Average Recorded Investment, Total                                                  | 659             | 520 | 504 |
| Interest Income Recognized, Total                                                   | 18              | 11 | 15 |
| Customer | North America                                                            |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment With No Allowance Recorded                                      | 23              | 28 | 83 |
| Unpaid Principal Balance With No Allowance Recorded                                 | 22              | 27 | 80 |
| Related Allowance With No Allowance Recorded                                        | 0               | 0 | 0 |
| Recorded Investment With An Allowance Recorded                                      | 13              | 25 | 23 |
| Unpaid Principal Balance With An Allowance Recorded                                 | 13              | 23 | 20 |
| Related Allowance                                                                   | 4               | 7 | 6 |
| Recorded Investment, Total                                                          | 36              | 53 | 106 |
| Unpaid Principal Balance, Total                                                     | 35              | 50 | 100 |
| Related Allowance, Total                                                            | 4               | 7 | 6 |
| Average Recorded Investment With No Allowance Recorded                              | 25              | 50 | 91 |
| Interest Income Recognized With No Allowance Recorded                               | 3               | 3 | 4 |
| Average Recorded Investment With An Allowance Recorded                              | 18              | 25 | 56 |
| Interest Income Recognized With An Allowance Recorded                               | 1               | 1 | 2 |
| Average Recorded Investment, Total                                                  | 43              | 75 | 147 |
| Interest Income Recognized, Total                                                   | 4               | 4 | 6 |
| Customer | Europe                                                                   |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment With No Allowance Recorded                                      | 48              | 45 | 47 |
| Unpaid Principal Balance With No Allowance Recorded                                 | 47              | 45 | 46 |
| Related Allowance With No Allowance Recorded                                        | 0               | 0 | 0 |
| Recorded Investment With An Allowance Recorded                                      | 20              | 28 | 22 |
| Unpaid Principal Balance With An Allowance Recorded                                 | 19              | 26 | 21 |
| Related Allowance                                                                   | 7               | 11 | 8 |
| Recorded Investment, Total                                                          | 68              | 73 | 69 |
| Unpaid Principal Balance, Total                                                     | 66              | 71 | 67 |
| Related Allowance, Total                                                            | 7               | 11 | 8 |
| Average Recorded Investment With No Allowance Recorded                              | 49              | 45 | 11 |
| Interest Income Recognized With No Allowance Recorded                               | 1               | 1 | 0 |
| Average Recorded Investment With An Allowance Recorded                              | 22              | 27 | 20 |
| Interest Income Recognized With An Allowance Recorded                               | 1               | 1 | 0 |
| Average Recorded Investment, Total                                                  | 71              | 72 | 31 |
| Interest Income Recognized, Total                                                   | 2               | 2 | 0 |
| Customer | Asia/Pacific                                                             |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment With No Allowance Recorded                                      | 7               | 2 | 4 |
| Unpaid Principal Balance With No Allowance Recorded                                 | 7               | 2 | 4 |
| Related Allowance With No Allowance Recorded                                        | 0               | 0 | 0 |
| Recorded Investment With An Allowance Recorded                                      | 17              | 19 | 9 |
| Unpaid Principal Balance With An Allowance Recorded                                 | 17              | 19 | 9 |
| Related Allowance                                                                   | 2               | 4 | 3 |
| Recorded Investment, Total                                                          | 24              | 21 | 13 |
| Unpaid Principal Balance, Total                                                     | 24              | 21 | 13 |
| Related Allowance, Total                                                            | 2               | 4 | 3 |
| Average Recorded Investment With No Allowance Recorded                              | 4               | 3 | 5 |
| Interest Income Recognized With No Allowance Recorded                               | 0               | 0 | 0 |
| Average Recorded Investment With An Allowance Recorded                              | 18              | 15 | 11 |
| Interest Income Recognized With An Allowance Recorded                               | 1               | 1 | 1 |
| Average Recorded Investment, Total                                                  | 22              | 18 | 16 |
| Interest Income Recognized, Total                                                   | 1               | 1 | 1 |
| Customer | Mining                                                                   |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment With No Allowance Recorded                                      | 134             | 1 | 8 |
| Unpaid Principal Balance With No Allowance Recorded                                 | 134             | 1 | 8 |
| Related Allowance With No Allowance Recorded                                        | 0               | 0 | 0 |
| Recorded Investment With An Allowance Recorded                                      | 0               | 0 | 0 |
| Unpaid Principal Balance With An Allowance Recorded                                 | 0               | 0 | 0 |
| Related Allowance                                                                   | 0               | 0 | 0 |
| Recorded Investment, Total                                                          | 134             | 1 | 8 |
| Unpaid Principal Balance, Total                                                     | 134             | 1 | 8 |
| Related Allowance, Total                                                            | 0               | 0 | 0 |
| Average Recorded Investment With No Allowance Recorded                              | 61              | 8 | 8 |
| Interest Income Recognized With No Allowance Recorded                               | 3               | 0 | 1 |
| Average Recorded Investment With An Allowance Recorded                              | 1               | 0 | 0 |
| Interest Income Recognized With An Allowance Recorded                               | 0               | 0 | 0 |
| Average Recorded Investment, Total                                                  | 62              | 8 | 8 |
| Interest Income Recognized, Total                                                   | 3               | 0 | 1 |
| Customer | Latin America                                                            |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment With No Allowance Recorded                                      | 11              | 7 | 9 |
| Unpaid Principal Balance With No Allowance Recorded                                 | 11              | 7 | 9 |
| Related Allowance With No Allowance Recorded                                        | 0               | 0 | 0 |
| Recorded Investment With An Allowance Recorded                                      | 23              | 30 | 19 |
| Unpaid Principal Balance With An Allowance Recorded                                 | 23              | 30 | 19 |
| Related Allowance                                                                   | 6               | 8 | 4 |
| Recorded Investment, Total                                                          | 34              | 37 | 28 |
| Unpaid Principal Balance, Total                                                     | 34              | 37 | 28 |
| Related Allowance, Total                                                            | 6               | 8 | 4 |
| Average Recorded Investment With No Allowance Recorded                              | 11              | 6 | 9 |
| Interest Income Recognized With No Allowance Recorded                               | 0               | 0 | 1 |
| Average Recorded Investment With An Allowance Recorded                              | 44              | 27 | 11 |
| Interest Income Recognized With An Allowance Recorded                               | 2               | 2 | 0 |
| Average Recorded Investment, Total                                                  | 55              | 33 | 20 |
| Interest Income Recognized, Total                                                   | 2               | 2 | 1 |
| Customer | Caterpillar Power Finance                                                |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment With No Allowance Recorded                                      | 223             | 295 | 175 |
| Unpaid Principal Balance With No Allowance Recorded                                 | 222             | 295 | 170 |
| Related Allowance With No Allowance Recorded                                        | 0               | 0 | 0 |
| Recorded Investment With An Allowance Recorded                                      | 110             | 113 | 85 |
| Unpaid Principal Balance With An Allowance Recorded                                 | 106             | 109 | 85 |
| Related Allowance                                                                   | 51              | 24 | 13 |
| Recorded Investment, Total                                                          | 333             | 408 | 260 |
| Unpaid Principal Balance, Total                                                     | 328             | 404 | 255 |
| Related Allowance, Total                                                            | 51              | 24 | 13 |
| Average Recorded Investment With No Allowance Recorded                              | 271             | 220 | 221 |
| Interest Income Recognized With No Allowance Recorded                               | 5               | 2 | 6 |
| Average Recorded Investment With An Allowance Recorded                              | 135             | 94 | 61 |
| Interest Income Recognized With An Allowance Recorded                               | 1               | 0 | 0 |
| Average Recorded Investment, Total                                                  | 406             | 314 | 282 |
| Interest Income Recognized, Total                                                   | 6               | 2 | 6 |
| Dealer                                                                              |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment, Total                                                          | 0               | 0 | 0 |
| Average Recorded Investment, Total                                                  | 0               | 0 | 0 |
| Caterpillar Purchased Receivables                                                   |            |   |   |
| **Financing Receivable, Impaired**                                                  |            |   |   |
| Recorded Investment, Total                                                          | 0               | 0 | 0 |
| Average Recorded Investment, Total                                                  | $ 0             | $ 0 | $ 0 |

| X                                                                                                                                                                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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+ References
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Average amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.
+ References
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+ References
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Amount of allowance for credit losses related to recorded investment.
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| - Definition
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|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of interest income, recognized on cash basis, on financing receivables, for which there is no related allowance for credit losses and are recognized as impaired.
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Amount of interest income on financing receivables, for which there is a related allowance for credit losses, recognized on a cash-basis method of accounting that the financing receivables were impaired.
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Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.
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