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Finance Receivables and Loans, Net - Schedule of Sales of Financing Receivables and Loans (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total sales and transfers | $ 13 | $ 339 | $ 2,404 | $ 1,729
Consumer | Automotive |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total sales and transfers | 0 | 0 | 0 | 1,108
Consumer | Consumer mortgage finance receivables |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total sales and transfers | 8 | 208 | 58 | 325
Consumer | Other |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total sales and transfers | 0 | 0 | 2,248 | 0
Commercial |  |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |  |
Total sales and transfers | $ 5 | $ 131 | $ 98 | $ 296

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