GM Financial Receivables and Transactions - Credit Risk Profile by FICO Score (Details) - GM Financial - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 95,294	$ 86,463
Retail Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2024	31,101	30,253
2023	20,100	20,259
2022	12,802	12,670
2021	7,642	6,842
2020	3,575	2,000
Prior	847	707
Total	$ 76,066	$ 72,729
Percent	100.00%	100.00%
Retail Finance Receivables \| Prime – FICO score 680 and greater
Financing Receivable, Credit Quality Indicator [Line Items]
2024	$ 24,155	$ 23,940
2023	15,814	15,581
2022	9,749	9,039
2021	5,424	4,926
2020	2,559	1,076
Prior	366	320
Total	$ 58,067	$ 54,882
Percent	76.30%	75.50%
Retail Finance Receivables \| Near-prime – FICO score 620 to 679
Financing Receivable, Credit Quality Indicator [Line Items]
2024	$ 3,547	$ 3,234
2023	2,227	2,281
2022	1,507	1,746
2021	1,077	906
2020	473	350
Prior	159	129
Total	$ 8,990	$ 8,647
Percent	11.80%	11.90%
Retail Finance Receivables \| Sub-prime – FICO score less than 620
Financing Receivable, Credit Quality Indicator [Line Items]
2024	$ 3,399	$ 3,079
2023	2,059	2,397
2022	1,546	1,884
2021	1,141	1,010
2020	543	573
Prior	322	257
Total	$ 9,008	$ 9,200
Percent	11.80%	12.60%

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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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