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Equipment on Operating Leases (Details) - Vehicles [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Property Subject to or Available for Operating Lease [Line Items]
Equipment on operating leases	$ 54,872		$ 55,282
Less: accumulated depreciation	(11,632)		(11,476)
Equipment on operating leases, net	43,240		$ 43,806
Depreciation expense	1,900	$ 1,800
GM Financial [Member]
Lessor Operating Lease Payments to be Received
2019	5,220
2020	4,740
2021	2,143
2022	306
2023	15
Total	$ 12,424

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- Definition

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

+ References

No definition available.

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- Definition

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- Definition

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.

+ References

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- References

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- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 30
-Section 50
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Amount of lease payments to be received by lessor in fifth fiscal year following latest fiscal year for operating lease. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest statement of financial position date.

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Amount of lease payments to be received by lessor in fourth 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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- Definition

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.

+ References

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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 lease payments to be received by lessor in second 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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