GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
GM Financial receivables, net of fees	$ 76,310	$ 64,702
Commercial Finance Receivables \| Floorplan advances
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of Contractual Amount Due	97.00%	94.00%
Commercial Finance Receivables \| GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 9,660	$ 5,498
2022	453	431
2021	357	427
2020	360	134
2019	102	50
2018	38	55
Prior	18	14
GM Financial receivables, net of fees	$ 10,988	$ 6,609
Percent	100.00%	100.00%
Commercial Finance Receivables \| GM Financial \| I
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 9,493	$ 5,210
2022	438	420
2021	356	396
2020	360	120
2019	91	50
2018	38	50
Prior	18	10
GM Financial receivables, net of fees	$ 10,794	$ 6,256
Percent	98.20%	94.70%
Commercial Finance Receivables \| GM Financial \| II
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 89	$ 207
2022	0	3
2021	1	16
2020	0	12
2019	0	0
2018	0	3
Prior	0	0
GM Financial receivables, net of fees	$ 91	$ 241
Percent	0.80%	3.60%
Commercial Finance Receivables \| GM Financial \| III
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 78	$ 81
2022	15	8
2021	0	15
2020	0	2
2019	10	0
2018	0	2
Prior	0	4
GM Financial receivables, net of fees	$ 104	$ 112
Percent	0.90%	1.70%
Commercial Finance Receivables \| GM Financial \| IV
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 0	$ 0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
2018	0	0
Prior	0	0
GM Financial receivables, net of fees	$ 0	$ 0
Percent	0.00%	0.00%

Financing Receivable, Revolving, Percent of Total

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Financing Receivable, before Allowance for Credit Loss, Percent

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- Definition

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 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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