GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Dec. 31, 2025	Dec. 31, 2024
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 92,374	$ 95,294
Commercial Finance Receivables \| Floorplan advances
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of revolving balance	99.10%	99.50%
Commercial Finance Receivables \| GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 16,970	$ 19,228
Finance receivables, nonaccrual status	0	0
Commercial Finance Receivables \| GM Financial \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	14,913	17,117
2025	352	331
2024	271	223
2023	149	385
2022	319	263
2021	209	269
Prior	161	35
Total	$ 16,374	$ 18,623
Percent	100.00%	100.00%
Commercial Finance Receivables \| GM Financial \| I \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 13,421	$ 16,190
2025	337	321
2024	191	209
2023	121	360
2022	298	237
2021	160	267
Prior	147	22
Total	$ 14,674	$ 17,606
Percent	89.60%	94.50%
Commercial Finance Receivables \| GM Financial \| II \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 985	$ 621
2025	10	0
2024	33	10
2023	25	26
2022	7	3
2021	35	2
Prior	2	0
Total	$ 1,096	$ 663
Percent	6.70%	3.60%
Commercial Finance Receivables \| GM Financial \| III \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 507	$ 305
2025	5	10
2024	48	4
2023	3	0
2022	14	22
2021	14	0
Prior	12	12
Total	$ 603	$ 354
Percent	3.70%	1.90%
Commercial Finance Receivables \| GM Financial \| IV \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 0	$ 1
2025	0	0
2024	0	0
2023	0	0
2022	0	0
2021	0	0
Prior	0	0
Total	$ 0	$ 1
Percent	0.00%	0.00%

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