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Equipment on Operating Leases (Details) - Vehicles [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases	$ 53,935		$ 53,935		$ 55,282
Less: accumulated depreciation	(11,276)		(11,276)		(11,476)
Equipment on operating leases, net	42,659		42,659		$ 43,806
Depreciation expense	1,800	$ 1,900	5,600	$ 5,600
GM Financial [Member]
Lessor Operating Lease Payments to be Received
2019	1,852		1,852
2020	5,996		5,996
2021	3,471		3,471
2022	1,084		1,084
2023	79		79
Thereafter	3		3
Total	$ 12,485		$ 12,485

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Operating Lease, Right-of-use Asset, Accumulated Depreciation

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Amount of lease payments to be received by lessor for operating lease.

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Amount of lease payments to be received by lessor in remainder of fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor in third fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on rolling approach, from latest statement of financial position date.

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

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