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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, 2022 | Jun. 30, 2021 | Jun. 30, 2022 | Jun. 30, 2021 | Dec. 31, 2021
Related Party Transaction [Line Items] |  |  |  |  |
Commercial finance receivables, net due from GM consolidated dealers | $ 66,706 |  | $ 66,706 |  | $ 62,816
Common stock dividends declared and paid | 750 | $ 600 | 750 | $ 1,200 |
Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Commercial finance receivables, net due from GM consolidated dealers | 7,486 |  | 7,486 |  | 6,562
Intersegment Eliminations |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Subvention receivable | 475 |  | 475 |  | 282
Interest subvention earned on finance receivables | 235 | 211 | 455 | 399 |
Leased vehicle subvention earned | 500 | 704 | 1,047 | 1,425 |
Cash payments | 561 | $ 1,000 | 1,000 | $ 2,000 |
Intersegment Eliminations | Commercial Finance Receivables |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |
Commercial finance receivables, net due from GM consolidated dealers | 133 |  | 133 |  | 163
Commercial loan funding payable | $ 41 |  | $ 41 |  | $ 26

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