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Finance Receivables and Loans, Net - Schedule of Loan Modifications (Details) $ in Millions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2025 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2025 USD ($) loan | Mar. 31, 2024 USD ($) loan | Dec. 31, 2024 USD ($)
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Trial modifications, term | 3 months |  |  |  |
Trial modifications, amount | $ 5 |  | $ 5 |  | $ 4
Total | $ 135 | $ 240 |  |  |
Percentage of total | 0.10% | 0.20% |  |  |
Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 6 | $ 0 |  |  |
Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 127 | 228 |  |  |
Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 1 | 1 |  |  |
Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 10 |  |  |
Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 1 | 1 |  |  |
Consumer |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 107 | 107 | 430 | $ 333 |
Consumer | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 332 | 272 |
Consumer | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 62 | 40 |
Consumer | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 23 | 11 |
Consumer | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 13 | 10 |
Consumer | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 0 |  |  |
Consumer | Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 105 | 99 |  |  |
Consumer | Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 1 | 1 |  |  |
Consumer | Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 6 |  |  |
Consumer | Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 1 | 1 |  |  |
Consumer | Automotive |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 106 | 100 | $ 427 | $ 315 |
Number of loans redefaulted | loan |  |  | 1,858 | 481 |
Amortized cost of loans redefaulted |  |  | $ 46 | $ 11 |
Consumer | Automotive | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 330 | 259 |
Consumer | Automotive | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 62 | 39 |
Consumer | Automotive | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 23 | 10 |
Consumer | Automotive | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 12 | 7 |
Consumer | Automotive | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 |  |  |
Payment extensions, number of months extended/deferred | 29 months | 29 months |  |  |
Consumer | Automotive | Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 105 | $ 99 | 420 | 303 |
Consumer | Automotive | Contractual maturity extensions | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 328 | 253 |
Consumer | Automotive | Contractual maturity extensions | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 62 | 38 |
Consumer | Automotive | Contractual maturity extensions | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 23 | 10 |
Consumer | Automotive | Contractual maturity extensions | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 7 | 2 |
Consumer | Automotive | Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 1 | 1 | 5 | 12 |
Principal forgiveness, amount forgiven | 0 | 0 |  |  |
Consumer | Automotive | Principal forgiveness | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 6 |
Consumer | Automotive | Principal forgiveness | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 1 |
Consumer | Automotive | Principal forgiveness | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Automotive | Principal forgiveness | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 5 | 5 |
Consumer | Automotive | Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 |  |  |
Interest rate concessions, initial rate | 0.00% | 0.00% |  |  |
Interest rate concessions, revised rate | 0.00% | 0.00% |  |  |
Consumer | Automotive | Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 | 2 |  |
Interest rate concessions, initial rate | 0.00% | 0.00% |  |  |
Interest rate concessions, revised rate | 0.00% | 0.00% |  |  |
Consumer | Automotive | Combination | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 2 |  |
Consumer | Automotive | Combination | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Consumer | Automotive | Combination | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Consumer | Automotive | Combination | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Consumer | Consumer mortgage finance receivables |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 1 | $ 1 | 3 | 4 |
Consumer | Consumer mortgage finance receivables | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 2 | 4 |
Consumer | Consumer mortgage finance receivables | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Consumer mortgage finance receivables | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Consumer mortgage finance receivables | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 1 | 0 |
Consumer | Consumer mortgage finance receivables | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 0 |  |  |
Consumer | Consumer mortgage finance receivables | Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 0 | 2 | 2 |
Consumer | Consumer mortgage finance receivables | Contractual maturity extensions | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 1 | 2 |
Consumer | Consumer mortgage finance receivables | Contractual maturity extensions | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Consumer mortgage finance receivables | Contractual maturity extensions | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Consumer mortgage finance receivables | Contractual maturity extensions | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 1 | 0 |
Consumer | Consumer mortgage finance receivables | Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 0 |  |  |
Principal forgiveness, amount forgiven | 0 | 0 |  |  |
Consumer | Consumer mortgage finance receivables | Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 |  |  |
Interest rate concessions, initial rate | 0.00% | 0.00% |  |  |
Interest rate concessions, revised rate | 0.00% | 0.00% |  |  |
Consumer | Consumer mortgage finance receivables | Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 1 | $ 1 | 1 | 2 |
Interest rate concessions, initial rate | 4.50% | 3.50% |  |  |
Interest rate concessions, revised rate | 2.80% | 3.40% |  |  |
Payment extensions, initial term | 291 months | 355 months |  |  |
Payment extensions, revised term | 480 months | 480 months |  |  |
Consumer | Consumer mortgage finance receivables | Combination | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 1 | 2 |
Consumer | Consumer mortgage finance receivables | Combination | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Consumer mortgage finance receivables | Combination | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Consumer mortgage finance receivables | Combination | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Consumer | Other |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  | $ 6 |  | 14 |
Consumer | Other | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 9 |
Consumer | Other | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 1 |
Consumer | Other | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 1 |
Consumer | Other | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 3 |
Consumer | Other | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  | 0 |  |  |
Consumer | Other | Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  | 0 |  |  |
Consumer | Other | Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  | 0 |  |  |
Principal forgiveness, amount forgiven |  | 0 |  |  |
Consumer | Other | Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  | $ 6 |  | 14 |
Interest rate concessions, initial rate |  | 30.50% |  |  |
Interest rate concessions, revised rate |  | 10.10% |  |  |
Consumer | Other | Interest rate concessions | Current |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 9 |
Consumer | Other | Interest rate concessions | 30–59 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 1 |
Consumer | Other | Interest rate concessions | 60–89 days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 1 |
Consumer | Other | Interest rate concessions | 90 or more days past due |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 3 |
Consumer | Other | Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  | $ 0 |  |  |
Interest rate concessions, initial rate |  | 0.00% |  |  |
Interest rate concessions, revised rate |  | 0.00% |  |  |
Commercial |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 28 | $ 133 | 73 | 171 |
Commercial | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 25 | 107 |
Commercial | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Commercial | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 44 | 64 |
Commercial | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 4 | 0 |
Commercial | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 6 | $ 0 |  |  |
Payment extensions, number of months extended/deferred | 15 months | 41 months |  |  |
Commercial | Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 22 | $ 129 |  |  |
Commercial | Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 0 |  |  |
Principal forgiveness, amount forgiven | 0 | 0 |  |  |
Commercial | Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 4 |  |  |
Interest rate concessions, initial rate | 0.00% | 12.90% |  |  |
Interest rate concessions, revised rate | 0.00% | 11.50% |  |  |
Commercial | Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 |  |  |
Interest rate concessions, initial rate | 0.00% | 0.00% |  |  |
Interest rate concessions, revised rate | 0.00% | 0.00% |  |  |
Commercial | Automotive |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 2 | $ 4 |  |  |
Commercial | Automotive | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 2 | 0 | 4 |  |
Payment extensions, number of months extended/deferred | 7 months |  |  |  |
Commercial | Automotive | Payment deferrals | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Automotive | Payment deferrals | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Automotive | Payment deferrals | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 4 |  |
Commercial | Automotive | Payment deferrals | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Automotive | Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | 0 |  |  |
Commercial | Automotive | Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 0 |  |  |
Principal forgiveness, amount forgiven | 0 | 0 |  |  |
Commercial | Automotive | Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 4 |  | 4 |
Interest rate concessions, initial rate | 0.00% | 12.90% |  |  |
Interest rate concessions, revised rate | 0.00% | 11.50% |  |  |
Commercial | Automotive | Interest rate concessions | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 0 |
Commercial | Automotive | Interest rate concessions | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 0 |
Commercial | Automotive | Interest rate concessions | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 4 |
Commercial | Automotive | Interest rate concessions | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  |  | 0 |
Commercial | Automotive | Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 | 3 |  |
Interest rate concessions, initial rate | 0.00% | 0.00% |  |  |
Interest rate concessions, revised rate | 0.00% | 0.00% |  |  |
Commercial | Automotive | Combination | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Automotive | Combination | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Automotive | Combination | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Automotive | Combination | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 3 |  |
Commercial | Other |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 26 | $ 129 |  |  |
Commercial | Other | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 4 | $ 0 | 4 |  |
Payment extensions, number of months extended/deferred | 16 months | 41 months |  |  |
Commercial | Other | Payment deferrals | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Other | Payment deferrals | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Other | Payment deferrals | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 4 |  |
Commercial | Other | Payment deferrals | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Other | Contractual maturity extensions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 22 | $ 129 | 47 | 167 |
Commercial | Other | Contractual maturity extensions | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 25 | 107 |
Commercial | Other | Contractual maturity extensions | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | 0 |
Commercial | Other | Contractual maturity extensions | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 22 | 60 |
Commercial | Other | Contractual maturity extensions | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 | $ 0 |
Commercial | Other | Principal forgiveness |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | 0 | 0 |  |  |
Principal forgiveness, amount forgiven | 0 | 0 |  |  |
Commercial | Other | Interest rate concessions |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 |  |  |
Interest rate concessions, initial rate | 0.00% | 0.00% |  |  |
Interest rate concessions, revised rate | 0.00% | 0.00% |  |  |
Commercial | Other | Combination |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total | $ 0 | $ 0 | 14 |  |
Interest rate concessions, initial rate | 0.00% | 0.00% |  |  |
Interest rate concessions, revised rate | 0.00% | 0.00% |  |  |
Commercial | Other | Combination | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Other | Combination | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Other | Combination | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 14 |  |
Commercial | Other | Combination | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Commercial real estate | Payment deferrals |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 1 |  |
Commercial | Commercial real estate | Payment deferrals | Pass |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Commercial real estate | Payment deferrals | Special mention |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Commercial real estate | Payment deferrals | Substandard |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | 0 |  |
Commercial | Commercial real estate | Payment deferrals | Doubtful |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Total |  |  | $ 1 |  |

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- Definition Financing Receivable, Excluding Accrued Interest, Modified, Subsequent Default, Number Of Contracts + References No definition available. + Details
Name: | ally_FinancingReceivableExcludingAccruedInterestModifiedSubsequentDefaultNumberOfContracts
Namespace Prefix: | ally_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Financing Receivable, Modified, Principal Forgiveness, Amount + References No definition available. + Details
Name: | ally_FinancingReceivableModifiedPrincipalForgivenessAmount
Namespace Prefix: | ally_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Financing Receivable, Modified, Weighted Average Interest Rate, Initial Rate + References No definition available. + Details
Name: | ally_FinancingReceivableModifiedWeightedAverageInterestRateInitialRate
Namespace Prefix: | ally_
Data Type: | dtr-types:percentItemType
Balance Type: | na
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