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Equipment on Operating Leases (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017 | Dec. 31, 2017
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |  |
Equipment on operating leases, net | $ 44,128 |  | $ 44,128 |  | $ 42,882
Operating Leases, Future Minimum Payments Receivable [Abstract] |  |  |  |  |
Total | 12,892 |  | 12,892 |  |
Vehicles [Member] |  |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |  |
Equipment on operating leases | 55,840 |  | 55,840 |  | 53,947
Less: accumulated depreciation | (11,238) |  | (11,238) |  | (9,959)
Equipment on operating leases, net | 44,602 |  | 44,602 |  | 43,988
Depreciation expense | 1,900 | $ 1,800 | 5,600 | $ 4,900 |
Vehicles [Member] | GM Financial [Member] |  |  |  |  |
Property Subject to or Available for Operating Lease [Line Items] |  |  |  |  |
Equipment on operating leases, net | 44,100 |  | 44,100 |  | $ 42,900
Operating Leases, Future Minimum Payments Receivable [Abstract] |  |  |  |  |
2018 | 1,882 |  | 1,882 |  |
2019 | 6,260 |  | 6,260 |  |
2020 | 3,570 |  | 3,570 |  |
2021 | 1,077 |  | 1,077 |  |
2022 | 97 |  | 97 |  |
Thereafter | $ 6 |  | $ 6 |  |

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- Definition Amount of required minimum rental payments receivable in the remainder of the fiscal year following the latest fiscal year ended for operating leases having an initial or remaining non-cancelable letter-terms in excess of one year. + References No definition available. + Details
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