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GM Financial Receivables and Transactions - Allowance for Loan Losses (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for credit loss of finance receivables, percentage	2.60%		2.60%		2.70%
GM Financial
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Allowance for loan losses at beginning of period	$ 2,355	$ 2,152	$ 2,344	$ 2,096
Provision for loan losses	174	167	378	298
Charge-offs	(411)	(323)	(816)	(645)
Recoveries	222	191	435	378
Effect of foreign currency and other	(29)	14	(30)	74
Allowance for loan losses at end of period	$ 2,311	$ 2,202	$ 2,311	$ 2,202

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- Definition

Percentage of allowance for credit loss to nonaccrual financing receivable.

+ References

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Amount of foreign currency translation gain (loss) which decreases (increases) allowance for credit loss on financing receivable. Excludes net investment in lease.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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