| **Finance Receivables (Details 6) $ in Millions**                                                      | 3 Months Ended |        |
|--------------------------------------------------------------------------------------------------------|----------------|--------|
||
| **Financing Receivable, Modifications**                                                                |           |   |   |
| Remaining commitments                                                                                  | $ 2            |   | $ 3 |
| **Finance receivables modified as TDRs**                                                               |           |   |   |
| Number of Contracts | contracts                                                                        | 21             | 5      |   |
| Pre-TDR Recorded Investment                                                                            | $ 52           | $ 84   |   |
| Post-TDR Recorded Investment                                                                           | $ 40           | $ 81   |   |
| **TDRs with a payment default which had been modified within twelve months prior to the default date** |           |   |   |
| Number of Contracts | contracts                                                                        | 21             | 5      |   |
| Post-TDR Recorded Investment                                                                           | $ 1            | $ 1    |   |
| Customer                                                                                               |           |   |   |
| **TDRs with a payment default which had been modified within twelve months prior to the default date** |           |   |   |
| Additional investments not recorded                                                                    | $ 1            | $ 0    |   |
| Customer | North America                                                                               |           |   |   |
| **Finance receivables modified as TDRs**                                                               |           |   |   |
| Number of Contracts | contracts                                                                        | 11             | 3      |   |
| Pre-TDR Recorded Investment                                                                            | $ 10           | $ 1    |   |
| Post-TDR Recorded Investment                                                                           | $ 10           | $ 1    |   |
| **TDRs with a payment default which had been modified within twelve months prior to the default date** |           |   |   |
| Number of Contracts | contracts                                                                        | 4              | 4      |   |
| Post-TDR Recorded Investment                                                                           | $ 0            | $ 1    |   |
| Customer | Europe                                                                                      |           |   |   |
| **TDRs with a payment default which had been modified within twelve months prior to the default date** |           |   |   |
| Number of Contracts | contracts                                                                        | 13             | 0      |   |
| Post-TDR Recorded Investment                                                                           | $ 1            | $ 0    |   |
| Customer | Asia/Pacific                                                                                |           |   |   |
| **Finance receivables modified as TDRs**                                                               |           |   |   |
| Number of Contracts | contracts                                                                        | 4              | 0      |   |
| Pre-TDR Recorded Investment                                                                            | $ 3            | $ 0    |   |
| Post-TDR Recorded Investment                                                                           | $ 3            | $ 0    |   |
| **TDRs with a payment default which had been modified within twelve months prior to the default date** |           |   |   |
| Number of Contracts | contracts                                                                        | 3              | 0      |   |
| Post-TDR Recorded Investment                                                                           | $ 0            | $ 0    |   |
| Customer | Latin America                                                                               |           |   |   |
| **Finance receivables modified as TDRs**                                                               |           |   |   |
| Number of Contracts | contracts                                                                        | 2              | 0      |   |
| Pre-TDR Recorded Investment                                                                            | $ 0            | $ 0    |   |
| Post-TDR Recorded Investment                                                                           | $ 0            | $ 0    |   |
| **TDRs with a payment default which had been modified within twelve months prior to the default date** |           |   |   |
| Number of Contracts | contracts                                                                        | 1              | 1      |   |
| Post-TDR Recorded Investment                                                                           | $ 0            | $ 0    |   |
| Customer | Caterpillar Power Finance                                                                   |           |   |   |
| **Finance receivables modified as TDRs**                                                               |           |   |   |
| Number of Contracts | contracts                                                                        | 4              | 2      |   |
| Pre-TDR Recorded Investment                                                                            | $ 39           | $ 83   |   |
| Post-TDR Recorded Investment                                                                           | $ 27           | $ 80   |   |
| Dealer                                                                                                 |           |   |   |
| **Finance receivables modified as TDRs**                                                               |           |   |   |
| Number of Contracts | contracts                                                                        | 0              | 0      |   |
| Caterpillar Purchased Receivables                                                                      |           |   |   |
| **Finance receivables modified as TDRs**                                                               |           |   |   |
| Number of Contracts | contracts                                                                        | 0              | 0      |   |

| X                                                                                                                                                                                                                                                                                                                                                           |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
The amount of the additional funds subsequently loaned to a borrower whose terms had been modified in a troubled debt restructuring.
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                         |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Loan and finance lease receivables modified as TDRs
+ References
No definition available.
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| X                                                                                                                                                                                                                                                                                                                                            |
|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Loans and leases modified as TDRs within previous twelve months that subsequently defaulted
+ References
No definition available.
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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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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of financing receivables that have been modified by troubled debt restructurings.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Post-modification amount of investment in financing receivables modified by troubled debt restructurings.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Pre-modification amount of investment in financing receivables modified by troubled debt restructurings.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953676-111524
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Number of financing receivables that have been modified by troubled debt restructurings within the previous 12 months and for which there was a payment default.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Amount of investment related to financing receivables modified by troubled debt restructurings within the previous 12 months, for which there was a payment default.
+ References
Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 34 -URI http://asc.fasb.org/extlink&oid=49124121&loc=SL6953682-111524
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| X                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| - Definition
Reflects the unfunded portion of contractual agreements to lend funds to borrowers for loans whose terms have been modified by troubled debt restructuring.
+ References
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| X                                                                                                                                                           |
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| X                                                                                                                                                                                        |
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                               |
|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                |
|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                                        |
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| X                                                                                                                                                         |
|-----------------------------------------------------------------------------------------------------------------------------------------------------------|
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| X                                                                                                                                                                                  |
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