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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, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |  |  |
Commercial finance receivables, net due from GM consolidated dealers | $ 70,600 |  | $ 70,600 |  | $ 62,816
Common stock dividends declared and paid | 275 | $ 600 | 1,000 | $ 1,800 |
Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Commercial finance receivables, net due from GM consolidated dealers | 9,183 |  | 9,183 |  | 6,562
Intersegment Eliminations |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Subvention receivable | 480 |  | 480 |  | 282
Interest subvention earned on finance receivables | 260 | 211 | 715 | 610 |
Leased vehicle subvention earned | 456 | 670 | 1,503 | 2,095 |
Cash payments | 732 | $ 828 | 1,700 | $ 2,900 |
Intersegment Eliminations | Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Commercial finance receivables, net due from GM consolidated dealers | 177 |  | 177 |  | 163
Commercial loan funding payable | $ 45 |  | $ 45 |  | $ 26

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