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Equipment on Operating Leases (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Lessor, Lease, Description [Line Items]
Residual value of leased asset	$ 29,800		$ 29,200
Vehicles
Lessor, Lease, Description [Line Items]
Equipment on operating leases	50,286		50,000
Less: accumulated depreciation	(9,943)		(10,181)
Equipment on operating leases, net	40,343		$ 39,819
Depreciation expense	1,700	$ 1,800
Vehicles | GM Financial
Lessor Operating Lease Payments to be Received
2021	4,824
2022	4,420
2023	2,049
2024	254
2025	7
Thereafter	0
Total	$ 11,554

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Amount of lease payment to be received by lessor for operating lease in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of lease payment to be received by lessor for operating lease in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of residual asset covered by residual value guarantee under operating lease. Excludes guarantee considered to be lease payments for lessor.

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Amount of lessee's right to use underlying asset under operating lease.

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