GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Mar. 31, 2025	Dec. 31, 2024
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	99.30%	99.50%
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 93,618	$ 95,294
GM Financial \| Commercial Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Total	16,623	19,228
GM Financial \| Commercial Finance Receivables \| Dealer Financing
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	14,598	17,117
2025	97	331
2024	323	223
2023	194	385
2022	377	263
2021	253	269
Prior	263	35
Total	$ 16,104	$ 18,623
Percent	100.00%	100.00%
GM Financial \| Commercial Finance Receivables \| Dealer Financing \| Group I - Performing accounts with strong to acceptable financial metrics
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 13,523	$ 16,190
2025	94	321
2024	288	209
2023	177	360
2022	352	237
2021	221	267
Prior	247	22
Total	$ 14,901	$ 17,606
Percent	92.50%	94.50%
GM Financial \| Commercial Finance Receivables \| Dealer Financing \| Group II - Performing accounts experiencing potential weakness in financial metrics
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 645	$ 621
2025	2	0
2024	28	10
2023	12	26
2022	11	3
2021	7	2
Prior	1	0
Total	$ 705	$ 663
Percent	4.40%	3.60%
GM Financial \| Commercial Finance Receivables \| Dealer Financing \| Group III - Non-Performing accounts with inadequate paying capacity for current obligations
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 428	$ 305
2025	2	10
2024	8	4
2023	6	0
2022	14	22
2021	24	0
Prior	15	12
Total	$ 498	$ 354
Percent	3.10%	1.90%
GM Financial \| Commercial Finance Receivables \| Dealer Financing \| Group IV - Non-Performing accounts with inadequate paying capacity for current obligations and inherent weaknesses
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 1	$ 1
2025	0	0
2024	0	0
2023	0	0
2022	0	0
2021	0	0
Prior	0	0
Total	$ 1	$ 1
Percent	0.00%	0.00%

Financing Receivable, Before Allowance For Credit Loss, Percent

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Financing Receivable, Revolving, Percent Of Total

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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 two years prior to current fiscal year. Excludes net investment in lease.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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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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