GM Financial Receivables and Transactions - Credit Risk Profile by FICO Score (Details) - GM Financial - USD ($) $ in Millions	Sep. 30, 2026	Dec. 31, 2025	Sep. 30, 2025
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 94,326	$ 92,374
Retail Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2026	25,157	30,399
2025	22,831	20,191
2024	14,163	12,132
2023	7,703	7,216
2022	4,305	3,897
Prior	2,493	1,570
Total	$ 76,651	$ 75,404	$ 75,857
Percent	100.00%	100.00%
Prime – FICO score 680 and greater \| Retail Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2026	$ 18,412	$ 22,850
2025	17,027	15,204
2024	10,543	9,298
2023	5,782	5,350
2022	3,154	2,712
Prior	1,664	1,027
Total	$ 56,581	$ 56,440
Percent	73.80%	74.90%
Near-prime – FICO score 620 to 679 \| Retail Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2026	$ 3,028	$ 3,702
2025	2,830	2,456
2024	1,771	1,439
2023	974	908
2022	570	571
Prior	382	225
Total	$ 9,556	$ 9,303
Percent	12.50%	12.30%
Sub-prime – FICO score less than 620 \| Retail Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
2026	$ 3,717	$ 3,847
2025	2,974	2,530
2024	1,850	1,395
2023	947	958
2022	581	614
Prior	447	318
Total	$ 10,515	$ 9,661
Percent	13.70%	12.80%

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