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Variable Interest Entities (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018
Variable Interest Entity [Line Items]
GM Financial equipment on operating leases, net	$ 38,188	$ 38,758
GM Financial [Member]
Variable Interest Entity [Line Items]
GM Financial receivables, net of fees – current	27,925	26,850
GM Financial receivables, net of fees – non-current	26,264	25,083
GM Financial short-term debt and current portion of long-term debt	30,659	30,956
GM Financial long-term debt	60,455	60,032
Consolidated VIE [Member] | GM Financial [Member]
Variable Interest Entity [Line Items]
Restricted cash – current	2,098	1,876
Restricted cash – non-current	490	504
GM Financial receivables, net of fees – current	18,781	18,304
GM Financial receivables, net of fees – non-current	13,512	14,008
GM Financial equipment on operating leases, net		21,781
GM Financial short-term debt and current portion of long-term debt	20,604	21,087
GM Financial long-term debt	20,241	$ 21,417
Consolidated VIE [Member] | GM Financial [Member] | Equipment Leased to Other Party [Member]
Variable Interest Entity [Line Items]
GM Financial equipment on operating leases, net	$ 19,404

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- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

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Amount of long-term debt and lease obligation, classified as noncurrent.

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