GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Jun. 30, 2024	Dec. 31, 2023
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 89,841	$ 86,463
Commercial Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Finance receivables, nonaccrual status	$ 0	$ 0
Commercial Finance Receivables \| Floorplan Advances
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of revolving balance	99.40%	99.70%
Commercial Finance Receivables \| GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 16,506	$ 13,734
Commercial Finance Receivables \| GM Financial \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	14,689	11,846
2024	106	281
2023	243	421
2022	406	311
2021	292	301
2020	287	86
Prior	52	11
Total	$ 16,075	$ 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	$ 14,056	$ 11,513
2024	102	279
2023	235	403
2022	384	297
2021	268	301
2020	286	75
Prior	35	11
Total	$ 15,365	$ 12,879
Percent	95.60%	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	$ 332	$ 182
2024	0	0
2023	3	2
2022	22	2
2021	0	0
2020	1	0
Prior	0	0
Total	$ 358	$ 187
Percent	2.20%	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	$ 301	$ 152
2024	4	1
2023	5	15
2022	0	12
2021	24	0
2020	0	11
Prior	18	0
Total	$ 352	$ 192
Percent	2.20%	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%

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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 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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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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