GM Financial Receivables and Transactions - Retail Finance Receivables Delinquencies (Details) - GM Financial - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024	Mar. 31, 2024
Financing Receivable, Past Due and Not Past Due [Abstract]
Total	$ 93,618	$ 95,294
Retail Finance Receivables
Financing Receivable, Past Due [Line Items]
Finance receivables, nonaccrual status	831	958
Financing Receivable, Past Due and Not Past Due [Abstract]
2025	9,141	31,101
2024	28,510	20,100
2023	18,006	12,802
2022	11,240	7,642
2021	6,586	3,575
Prior	3,511	847
Total	$ 76,995	$ 76,066	$ 73,230
Percent	100.00%	100.00%
Total, percent	100.00%	100.00%	100.00%
Retail Finance Receivables \| Performing Financial Instruments \| 0-to-30 days
Financing Receivable, Past Due and Not Past Due [Abstract]
2025	$ 9,115	$ 30,581
2024	27,942	19,411
2023	17,420	12,207
2022	10,750	7,178
2021	6,228	3,350
Prior	3,253	710
Total	$ 74,707	$ 73,438	$ 71,225
Percent	97.00%	96.50%	97.30%
Retail Finance Receivables \| Nonperforming Financial Instruments \| 31-to-60 days
Financing Receivable, Past Due and Not Past Due [Abstract]
2025	$ 25	$ 374
2024	404	481
2023	419	425
2022	357	340
2021	269	166
Prior	193	99
Total	$ 1,667	$ 1,885	$ 1,463
Percent of contractual amount due	2.20%	2.50%	2.00%
Retail Finance Receivables \| Nonperforming Financial Instruments \| Greater-than-60 days
Financing Receivable, Past Due and Not Past Due [Abstract]
2025	$ 1	$ 128
2024	143	188
2023	146	155
2022	121	115
2021	83	55
Prior	62	36
Total	$ 556	$ 677	$ 482
Percent of contractual amount due	0.70%	0.90%	0.70%
Retail Finance Receivables \| Nonperforming Financial Instruments \| Finance receivables more than 30 days delinquent
Financing Receivable, Past Due and Not Past Due [Abstract]
2025	$ 26	$ 502
2024	547	669
2023	566	580
2022	478	455
2021	351	221
Prior	255	135
Total	$ 2,223	$ 2,562	$ 1,945
Percent of contractual amount due	2.90%	3.40%	2.70%
Retail Finance Receivables \| Nonperforming Financial Instruments \| In repossession
Financing Receivable, Past Due and Not Past Due [Abstract]
2025	$ 0	$ 17
2024	21	19
2023	20	14
2022	13	10
2021	7	3
Prior	3	2
Total	$ 65	$ 66	$ 60
Percent of contractual amount due	0.10%	0.10%	0.10%
Retail Finance Receivables \| Nonperforming Financial Instruments \| Finance receivables more than 30 days delinquent or in repossession
Financing Receivable, Past Due and Not Past Due [Abstract]
2025	$ 27	$ 519
2024	568	689
2023	585	595
2022	491	464
2021	359	225
Prior	259	136
Total	$ 2,288	$ 2,628	$ 2,005
Percent of contractual amount due	3.00%	3.50%	2.70%

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Financing Receivable, Including Past Due, Percent

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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 on nonaccrual status. Excludes net investment in lease.

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