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GM Financial Receivables and Transactions - Intercompany Transactions (Details) - GM Financial - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Related Party Transaction [Line Items] |  |  |  |  |
GM Financial receivables | $ 94,236 |  | $ 94,236 |  | $ 95,294
Common stock dividends declared and paid | 350 | $ 450 | 700 | $ 900 |
Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
GM Financial receivables | 16,399 |  | 16,399 |  | 19,228
Eliminations |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Subvention receivable from GM | 579 |  | 579 |  | 360
Interest subvention earned on finance receivables | 364 | 346 | 731 | 680 |
Leased vehicle subvention earned | 437 | 359 | 852 | 723 |
Cash payments | 918 | $ 934 | 1,600 | $ 1,700 |
Eliminations | Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
GM Financial receivables | 324 |  | 324 |  | 279
Commercial loan funding payable to GM | $ 101 |  | $ 101 |  | $ 100

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