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Finance Receivables and Loans, Net - Schedule of Financing Receivable Credit Quality Indicators Commercial (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total finance receivables and loans | $ 134,567 | $ 136,030
Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 2,033 | 2,197
Year two, originated, fiscal year before current fiscal year | 2,224 | 1,652
Year three, originated, two years before current fiscal year | 1,315 | 2,305
Year four, originated, three years before current fiscal year | 1,991 | 1,739
Year five, originated, four years before current fiscal year | 1,527 | 1,109
Originated, more than five years before current fiscal year | 2,295 | 1,555
Revolving loans | 21,727 | 22,032
Revolving loans converted to term | 208 | 156
Total finance receivables and loans | 33,320 | 32,745
Automotive | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 271 | 525
Year two, originated, fiscal year before current fiscal year | 439 | 374
Year three, originated, two years before current fiscal year | 289 | 352
Year four, originated, three years before current fiscal year | 293 | 150
Year five, originated, four years before current fiscal year | 122 | 67
Originated, more than five years before current fiscal year | 84 | 53
Revolving loans | 15,639 | 16,738
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 17,137 | 18,259
Automotive | Pass | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 269 | 522
Year two, originated, fiscal year before current fiscal year | 437 | 336
Year three, originated, two years before current fiscal year | 266 | 337
Year four, originated, three years before current fiscal year | 281 | 125
Year five, originated, four years before current fiscal year | 103 | 64
Originated, more than five years before current fiscal year | 81 | 52
Revolving loans | 14,303 | 15,005
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 15,740 | 16,441
Automotive | Special mention | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 2 | 3
Year two, originated, fiscal year before current fiscal year | 2 | 38
Year three, originated, two years before current fiscal year | 23 | 15
Year four, originated, three years before current fiscal year | 12 | 25
Year five, originated, four years before current fiscal year | 19 | 3
Originated, more than five years before current fiscal year | 3 | 1
Revolving loans | 1,290 | 1,694
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 1,351 | 1,779
Automotive | Substandard | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 0 | 0
Year two, originated, fiscal year before current fiscal year | 0 | 0
Year three, originated, two years before current fiscal year | 0 | 0
Year four, originated, three years before current fiscal year | 0 | 0
Year five, originated, four years before current fiscal year | 0 | 0
Originated, more than five years before current fiscal year | 0 | 0
Revolving loans | 46 | 33
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 46 | 33
Automotive | Doubtful | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year |  | 0
Year two, originated, fiscal year before current fiscal year |  | 0
Year three, originated, two years before current fiscal year |  | 0
Year four, originated, three years before current fiscal year |  | 0
Year five, originated, four years before current fiscal year |  | 0
Originated, more than five years before current fiscal year |  | 0
Revolving loans |  | 6
Revolving loans converted to term |  | 0
Total finance receivables and loans |  | 6
Other | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 561 | 707
Year two, originated, fiscal year before current fiscal year | 667 | 323
Year three, originated, two years before current fiscal year | 173 | 655
Year four, originated, three years before current fiscal year | 547 | 502
Year five, originated, four years before current fiscal year | 396 | 250
Originated, more than five years before current fiscal year | 598 | 361
Revolving loans | 6,077 | 5,294
Revolving loans converted to term | 150 | 120
Total finance receivables and loans | 9,169 | 8,212
Other | Pass | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 561 | 707
Year two, originated, fiscal year before current fiscal year | 636 | 296
Year three, originated, two years before current fiscal year | 173 | 261
Year four, originated, three years before current fiscal year | 315 | 199
Year five, originated, four years before current fiscal year | 216 | 18
Originated, more than five years before current fiscal year | 332 | 205
Revolving loans | 5,711 | 5,047
Revolving loans converted to term | 128 | 84
Total finance receivables and loans | 8,072 | 6,817
Other | Special mention | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 0 | 0
Year two, originated, fiscal year before current fiscal year | 31 | 0
Year three, originated, two years before current fiscal year | 0 | 394
Year four, originated, three years before current fiscal year | 232 | 280
Year five, originated, four years before current fiscal year | 160 | 186
Originated, more than five years before current fiscal year | 97 | 76
Revolving loans | 308 | 226
Revolving loans converted to term | 22 | 32
Total finance receivables and loans | 850 | 1,194
Other | Substandard | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 0 | 0
Year two, originated, fiscal year before current fiscal year | 0 | 27
Year three, originated, two years before current fiscal year | 0 | 0
Year four, originated, three years before current fiscal year | 0 | 23
Year five, originated, four years before current fiscal year | 20 | 46
Originated, more than five years before current fiscal year | 62 | 54
Revolving loans | 42 | 12
Revolving loans converted to term | 0 | 4
Total finance receivables and loans | 124 | 166
Other | Doubtful | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 0 | 0
Year two, originated, fiscal year before current fiscal year | 0 | 0
Year three, originated, two years before current fiscal year | 0 | 0
Year four, originated, three years before current fiscal year | 0 | 0
Year five, originated, four years before current fiscal year | 0 | 0
Originated, more than five years before current fiscal year | 107 | 26
Revolving loans | 16 | 9
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 123 | 35
Commercial real estate | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 1,201 | 965
Year two, originated, fiscal year before current fiscal year | 1,118 | 955
Year three, originated, two years before current fiscal year | 853 | 1,298
Year four, originated, three years before current fiscal year | 1,151 | 1,087
Year five, originated, four years before current fiscal year | 1,009 | 792
Originated, more than five years before current fiscal year | 1,613 | 1,141
Revolving loans | 11 | 0
Revolving loans converted to term | 58 | 36
Total finance receivables and loans | 7,014 | 6,274
Commercial real estate | Pass | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 1,198 | 959
Year two, originated, fiscal year before current fiscal year | 1,076 | 904
Year three, originated, two years before current fiscal year | 804 | 1,228
Year four, originated, three years before current fiscal year | 1,051 | 1,030
Year five, originated, four years before current fiscal year | 963 | 757
Originated, more than five years before current fiscal year | 1,576 | 1,137
Revolving loans | 11 | 0
Revolving loans converted to term | 58 | 36
Total finance receivables and loans | 6,737 | 6,051
Commercial real estate | Special mention | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 3 | 6
Year two, originated, fiscal year before current fiscal year | 42 | 51
Year three, originated, two years before current fiscal year | 45 | 69
Year four, originated, three years before current fiscal year | 94 | 57
Year five, originated, four years before current fiscal year | 46 | 35
Originated, more than five years before current fiscal year | 37 | 3
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 267 | 221
Commercial real estate | Substandard | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 0 |
Year two, originated, fiscal year before current fiscal year | 0 |
Year three, originated, two years before current fiscal year | 2 |
Year four, originated, three years before current fiscal year | 5 |
Year five, originated, four years before current fiscal year | 0 |
Originated, more than five years before current fiscal year | 0 |
Revolving loans | 0 |
Revolving loans converted to term | 0 |
Total finance receivables and loans | 7 |
Commercial real estate | Doubtful | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 0 | 0
Year two, originated, fiscal year before current fiscal year | 0 | 0
Year three, originated, two years before current fiscal year | 2 | 1
Year four, originated, three years before current fiscal year | 1 | 0
Year five, originated, four years before current fiscal year | 0 | 0
Originated, more than five years before current fiscal year | 0 | 1
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | $ 3 | $ 2

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