GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 87,547	$ 86,463
Commercial Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Finance receivables, nonaccrual status	$ 0
Commercial Finance Receivables \| Floorplan Advances
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of revolving balance	99.10%	99.70%
Commercial Finance Receivables \| GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 14,317	$ 13,734
Commercial Finance Receivables \| GM Financial \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	12,547	11,846
2024	60	281
2023	256	421
2022	411	311
2021	302	301
2020	294	86
Prior	69	11
Total	$ 13,939	$ 13,257
Percent	100.00%	100.00%
Commercial Finance Receivables \| GM Financial \| Group I - Performing accounts with strong to acceptable financial metrics \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 12,056	$ 11,513
2024	56	279
2023	248	403
2022	389	297
2021	289	301
2020	294	75
Prior	62	11
Total	$ 13,395	$ 12,879
Percent	96.10%	97.10%
Commercial Finance Receivables \| GM Financial \| Group II - Performing accounts experiencing potential weakness in financial metrics \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 274	$ 182
2024	0	0
2023	3	2
2022	7	2
2021	0	0
2020	0	0
Prior	0	0
Total	$ 284	$ 187
Percent	2.00%	1.40%
Commercial Finance Receivables \| GM Financial \| Group III - Non-Performing accounts with inadequate paying capacity for current obligations \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 217	$ 152
2024	4	1
2023	5	15
2022	15	12
2021	12	0
2020	0	11
Prior	7	0
Total	$ 261	$ 192
Percent	1.90%	1.40%
Commercial Finance Receivables \| GM Financial \| Group IV - Non-Performing accounts with inadequate paying capacity for current obligations and inherent weaknesses \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 0	$ 0
2024	0	0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
Prior	0	0
Total	$ 0	$ 0
Percent	0.00%	0.00%

Financing Receivable, Before Allowance for Credit Loss, Percent

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Financing Receivable, Revolving, Percent Of Total

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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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