GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Finance receivables, nonaccrual status	$ 0	$ 0
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
GM Financial receivables, net of fees	$ 86,463	$ 76,310
Commercial Finance Receivables \| Floorplan advances
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of Contractual Amount Due	99.70%	99.00%
Commercial Finance Receivables \| GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
GM Financial receivables, net of fees	$ 13,734	$ 10,988
Commercial Finance Receivables \| GM Financial \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	11,846	9,297
2023	281	453
2022	421	357
2021	311	360
2020	301	102
2019	86	38
Prior	11	18
GM Financial receivables, net of fees	$ 13,257	$ 10,625
Percent	100.00%	100.00%
Commercial Finance Receivables \| GM Financial \| I \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 11,513	$ 9,130
2023	279	438
2022	403	356
2021	297	360
2020	301	91
2019	75	38
Prior	11	18
GM Financial receivables, net of fees	$ 12,879	$ 10,431
Percent	97.10%	98.20%
Commercial Finance Receivables \| GM Financial \| II \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 182	$ 89
2023	0	0
2022	2	1
2021	2	0
2020	0	0
2019	0	0
Prior	0	0
GM Financial receivables, net of fees	$ 187	$ 91
Percent	1.40%	0.90%
Commercial Finance Receivables \| GM Financial \| III \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 152	$ 78
2023	1	15
2022	15	0
2021	12	0
2020	0	10
2019	11	0
Prior	0	0
GM Financial receivables, net of fees	$ 192	$ 104
Percent	1.40%	1.00%
Commercial Finance Receivables \| GM Financial \| IV \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 0	$ 0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
GM Financial receivables, net of fees	$ 0	$ 0
Percent	0.00%	0.00%

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Financing Receivable, before Allowance for Credit Loss, Percent

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Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated four years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated in fiscal year prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated three years prior to current fiscal year. Excludes net investment in lease.

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Amortized cost of financing receivable originated two years prior to current fiscal year. Excludes net investment in lease.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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Amortized cost of financing receivable that can be withdrawn, repaid, and redrawn.

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Amortized cost, before allowance for credit loss, of financing receivable. Excludes financing receivable covered under loss sharing agreement and net investment in lease.

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