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GM Financial Receivables and Transactions - Intercompany Transactions (Details) - GM Financial - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Related Party Transaction [Line Items]
Financing receivable, net	$ 85,193		$ 84,119
Common stock dividends declared and paid	450	$ 450
Eliminations
Related Party Transaction [Line Items]
Subvention receivable from GM	600		508
Interest subvention earned on finance receivables	335	279
Leased vehicle subvention earned	364	393
Cash payments	777	$ 749
Commercial Finance Receivables
Related Party Transaction [Line Items]
Financing receivable, net	14,282		13,698
Commercial Finance Receivables | Eliminations
Related Party Transaction [Line Items]
Financing receivable, net	183		164
Commercial loan funding payable to GM	179		55
Commercial Finance Receivables | Eliminations | Cruise
Related Party Transaction [Line Items]
Financing receivable, net	$ 395		$ 353

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