GM Financial Receivables and Transactions - Intercompany Transactions (Details) - GM Financial - USD ($) $ in Millions |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2022 |
Mar. 31, 2021 |
Dec. 31, 2021 |
|
| Related Party Transaction [Line Items] | |||
| Financing receivable, net | $ 64,848 | $ 62,816 | |
| Common stock dividends declared and paid | $ 600 | ||
| Commercial Finance Receivables | |||
| Related Party Transaction [Line Items] | |||
| Financing receivable, net | 7,230 | 6,562 | |
| Intersegment Eliminations | |||
| Related Party Transaction [Line Items] | |||
| Subvention receivable | 357 | 282 | |
| Interest subvention earned on finance receivables | 221 | 188 | |
| Leased vehicle subvention earned | 547 | 721 | |
| Cash payments | 439 | $ 1,000 | |
| Intersegment Eliminations | Commercial Finance Receivables | |||
| Related Party Transaction [Line Items] | |||
| Financing receivable, net | 122 | 163 | |
| Commercial loan funding payable | $ 41 | $ 26 | |