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Finance Receivables and Loans, Net - Schedule of Financing Receivable Gross Charge-Offs (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Dec. 31, 2024
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Year one, originated, current fiscal year, writeoff |  |  | $ 65 |  | $ 160
Year two, originated, fiscal year before current fiscal year, writeoff |  |  | 405 |  | 779
Year three, originated, two years before current fiscal year, writeoff |  |  | 574 |  | 943
Year four, originated, three years before current fiscal year, writeoff |  |  | 518 |  | 511
Year five, originated, four years before current fiscal year, writeoff |  |  | 254 |  | 137
More than five years before current fiscal year, writeoff |  |  | 124 |  | 154
Revolving loans |  |  | 65 |  | 248
Revolving loans converted to term |  |  | 4 |  | 16
Total | $ 662 | $ 744 | 2,009 | $ 2,178 | 2,948
Write-downs from transfers to held-for-sale |  |  |  | 5 |
Consumer |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Year one, originated, current fiscal year, writeoff |  |  | 65 |  | 160
Year two, originated, fiscal year before current fiscal year, writeoff |  |  | 405 |  | 779
Year three, originated, two years before current fiscal year, writeoff |  |  | 574 |  | 943
Year four, originated, three years before current fiscal year, writeoff |  |  | 518 |  | 511
Year five, originated, four years before current fiscal year, writeoff |  |  | 253 |  | 137
More than five years before current fiscal year, writeoff |  |  | 124 |  | 153
Revolving loans |  |  | 64 |  | 246
Revolving loans converted to term |  |  | 4 |  | 16
Total |  |  | 2,007 |  | 2,945
Consumer | Automotive |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Year one, originated, current fiscal year, writeoff |  |  | 65 |  | 160
Year two, originated, fiscal year before current fiscal year, writeoff |  |  | 405 |  | 779
Year three, originated, two years before current fiscal year, writeoff |  |  | 574 |  | 943
Year four, originated, three years before current fiscal year, writeoff |  |  | 517 |  | 510
Year five, originated, four years before current fiscal year, writeoff |  |  | 252 |  | 137
More than five years before current fiscal year, writeoff |  |  | 124 |  | 152
Revolving loans |  |  | 0 |  | 0
Revolving loans converted to term |  |  | 0 |  | 0
Total | 662 | 683 | 1,937 | 1,976 | 2,681
Write-downs from transfers to held-for-sale |  |  |  | 5 | 5
Consumer | Consumer mortgage finance receivables |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Year one, originated, current fiscal year, writeoff |  |  | 0 |  | 0
Year two, originated, fiscal year before current fiscal year, writeoff |  |  | 0 |  | 0
Year three, originated, two years before current fiscal year, writeoff |  |  | 0 |  | 0
Year four, originated, three years before current fiscal year, writeoff |  |  | 1 |  | 1
Year five, originated, four years before current fiscal year, writeoff |  |  | 1 |  | 0
More than five years before current fiscal year, writeoff |  |  | 0 |  | 1
Revolving loans |  |  | 0 |  | 0
Revolving loans converted to term |  |  | 0 |  | 0
Total | 0 | 0 | 2 | 1 | 2
Write-downs from transfers to held-for-sale |  |  |  | 0 |
Consumer | Other |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Year one, originated, current fiscal year, writeoff |  |  | 0 |  | 0
Year two, originated, fiscal year before current fiscal year, writeoff |  |  | 0 |  | 0
Year three, originated, two years before current fiscal year, writeoff |  |  | 0 |  | 0
Year four, originated, three years before current fiscal year, writeoff |  |  | 0 |  | 0
Year five, originated, four years before current fiscal year, writeoff |  |  | 0 |  | 0
More than five years before current fiscal year, writeoff |  |  | 0 |  | 0
Revolving loans |  |  | 64 |  | 246
Revolving loans converted to term |  |  | 4 |  | 16
Total |  | 61 | 68 | 199 | 262
Write-downs from transfers to held-for-sale |  |  |  | 0 |
Commercial |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Year one, originated, current fiscal year, writeoff |  |  | 0 |  | 0
Year two, originated, fiscal year before current fiscal year, writeoff |  |  | 0 |  | 0
Year three, originated, two years before current fiscal year, writeoff |  |  | 0 |  | 0
Year four, originated, three years before current fiscal year, writeoff |  |  | 0 |  | 0
Year five, originated, four years before current fiscal year, writeoff |  |  | 1 |  | 0
More than five years before current fiscal year, writeoff |  |  | 0 |  | 1
Revolving loans |  |  | 1 |  | 2
Revolving loans converted to term |  |  | 0 |  | 0
Total | $ 0 | $ 0 | 2 | 2 | 3
Write-downs from transfers to held-for-sale |  |  |  | $ 0 |
Commercial | Automotive |  |  |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |  |  |
Year one, originated, current fiscal year, writeoff |  |  | 0 |  | 0
Year two, originated, fiscal year before current fiscal year, writeoff |  |  | 0 |  | 0
Year three, originated, two years before current fiscal year, writeoff |  |  | 0 |  | 0
Year four, originated, three years before current fiscal year, writeoff |  |  | 0 |  | 0
Year five, originated, four years before current fiscal year, writeoff |  |  | 1 |  | 0
More than five years before current fiscal year, writeoff |  |  | 0 |  | 1
Revolving loans |  |  | 1 |  | 2
Revolving loans converted to term |  |  | 0 |  | 0
Total |  |  | $ 2 |  | $ 3

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