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Finance Receivables and Loans, Net (Schedule of Accounts, Notes, Loans and Financing Receivables) (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | $ 137,960 | $ 139,439
Unamortized premiums and discounts and deferred fees and costs | 2,300 | 2,300
Accrued interest receivable | 856 | 853
Consumer |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 103,809 | 104,977
Consumer | Automotive |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 83,406 | 84,320
Consumer | Consumer mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 18,441 | 18,667
Consumer | Mortgage Finance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 18,227 | 18,442
Interest-only mortgage loans | 2 | 2
Consumer | Mortgage — Legacy |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 214 | 225
Interest-only mortgage loans | 12 | 13
Consumer | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 1,962 | 1,990
Consumer | Credit Card |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 1,962 | 1,990
Commercial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 34,151 | 34,462
Commercial | Automotive |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 19,163 | 18,700
Commercial | Consumer mortgage |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | 6,077 | 6,050
Commercial | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total finance receivables and loans | $ 8,911 | $ 9,712

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