GM Financial Receivables and Transactions - Commercial Finance Receivables Credit Quality Indicators (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Total	$ 83,469	$ 76,310
Commercial Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Finance receivables, nonaccrual status	0
Commercial Finance Receivables \| GM Financial
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	10,421	9,660
2023	149	453
2022	432	357
2021	318	360
2020	322	102
2019	92	38
Prior	31	18
Total	$ 11,765	$ 10,988
Percent	100.00%	100.00%
Commercial Finance Receivables \| GM Financial \| Group I - Performing accounts with strong to acceptable financial metrics
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 10,129	$ 9,493
2023	149	438
2022	414	356
2021	308	360
2020	321	91
2019	84	38
Prior	31	18
Total	$ 11,435	$ 10,794
Percent	97.20%	98.20%
Commercial Finance Receivables \| GM Financial \| Group II - Performing accounts experiencing potential weakness in financial metrics
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 142	$ 89
2023	0	0
2022	2	1
2021	1	0
2020	0	0
2019	0	0
Prior	0	0
Total	$ 146	$ 91
Percent	1.20%	0.80%
Commercial Finance Receivables \| GM Financial \| Group III - Non-Performing accounts with inadequate paying capacity for current obligations
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 150	$ 78
2023	0	15
2022	16	0
2021	9	0
2020	0	10
2019	8	0
Prior	0	0
Total	$ 184	$ 104
Percent	1.60%	0.90%
Commercial Finance Receivables \| GM Financial \| Group IV - Non-Performing accounts with inadequate paying capacity for current obligations and inherent weaknesses
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving	$ 0	$ 0
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Total	$ 0	$ 0
Percent	0.00%	0.00%
Floorplan Advances \| Commercial Finance Receivables
Financing Receivable, Credit Quality Indicator [Line Items]
Percent of revolving balance	95.00%	97.00%

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

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