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GM Financial Receivables and Transactions - Intercompany Transactions (Details) - GM Financial - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Dec. 31, 2023
Related Party Transaction [Line Items] |  |  |  |  |
GM Financial receivables | $ 92,759 |  | $ 92,759 |  | $ 86,463
Common stock dividends declared and paid | 450 | $ 450 | 1,400 | $ 1,400 |
Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
GM Financial receivables | 18,375 |  | 18,375 |  | 13,734
Eliminations |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Subvention receivable from GM | 350 |  | 350 |  | 508
Interest subvention earned on finance receivables | 345 | 319 | 1,026 | 906 |
Leased vehicle subvention earned | 385 | 382 | 1,108 | 1,165 |
Cash payments | 1,200 | $ 629 | 2,900 | $ 2,300 |
Eliminations | Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
GM Financial receivables | 208 |  | 208 |  | 164
Commercial loan funding payable to GM | 96 |  | 96 |  | 55
Eliminations | Commercial Finance Receivables | Cruise |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
GM Financial receivables | $ 395 |  | $ 395 |  | $ 353

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