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Finance Receivables and Loans, Net (Financing Receivable Credit Quality Indicators Commercial) (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Dec. 31, 2023
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Financing Receivable, Credit Quality Indicator [Line Items] |  |
Total finance receivables and loans | $ 137,960 | $ 139,439
Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 457 | 1,820
Year two, originated, fiscal year before current fiscal year | 1,847 | 2,845
Year three, originated, two years before current fiscal year | 2,766 | 1,929
Year four, originated, three years before current fiscal year | 1,896 | 1,597
Year five, originated, four years before current fiscal year | 1,440 | 1,002
Originated, more than five years before current fiscal year | 2,081 | 1,223
Revolving loans | 23,413 | 23,811
Revolving loans converted to term | 251 | 235
Total finance receivables and loans | 34,151 | 34,462
Automotive | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 198 | 515
Year two, originated, fiscal year before current fiscal year | 475 | 520
Year three, originated, two years before current fiscal year | 488 | 195
Year four, originated, three years before current fiscal year | 181 | 98
Year five, originated, four years before current fiscal year | 90 | 59
Originated, more than five years before current fiscal year | 85 | 37
Revolving loans | 17,646 | 17,276
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 19,163 | 18,700
Automotive | Pass | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 197 | 509
Year two, originated, fiscal year before current fiscal year | 470 | 512
Year three, originated, two years before current fiscal year | 481 | 165
Year four, originated, three years before current fiscal year | 152 | 97
Year five, originated, four years before current fiscal year | 89 | 58
Originated, more than five years before current fiscal year | 71 | 22
Revolving loans | 16,790 | 16,446
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 18,250 | 17,809
Automotive | Special mention | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 1 | 6
Year two, originated, fiscal year before current fiscal year | 5 | 7
Year three, originated, two years before current fiscal year | 7 | 30
Year four, originated, three years before current fiscal year | 29 | 1
Year five, originated, four years before current fiscal year | 1 | 1
Originated, more than five years before current fiscal year | 13 | 14
Revolving loans | 760 | 723
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 816 | 782
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 | 1
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 | 39 | 44
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 39 | 45
Automotive | 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 | 1 | 1
Revolving loans | 57 | 63
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 58 | 64
Other | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 87 | 331
Year two, originated, fiscal year before current fiscal year | 327 | 854
Year three, originated, two years before current fiscal year | 815 | 577
Year four, originated, three years before current fiscal year | 573 | 614
Year five, originated, four years before current fiscal year | 480 | 318
Originated, more than five years before current fiscal year | 641 | 374
Revolving loans | 5,767 | 6,435
Revolving loans converted to term | 221 | 209
Total finance receivables and loans | 8,911 | 9,712
Other | Pass | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 87 | 331
Year two, originated, fiscal year before current fiscal year | 300 | 646
Year three, originated, two years before current fiscal year | 588 | 343
Year four, originated, three years before current fiscal year | 310 | 405
Year five, originated, four years before current fiscal year | 242 | 266
Originated, more than five years before current fiscal year | 378 | 180
Revolving loans | 5,538 | 6,202
Revolving loans converted to term | 182 | 173
Total finance receivables and loans | 7,625 | 8,546
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 | 0 | 208
Year three, originated, two years before current fiscal year | 227 | 188
Year four, originated, three years before current fiscal year | 218 | 206
Year five, originated, four years before current fiscal year | 181 | 51
Originated, more than five years before current fiscal year | 153 | 85
Revolving loans | 193 | 198
Revolving loans converted to term | 28 | 25
Total finance receivables and loans | 1,000 | 961
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 | 27 | 0
Year three, originated, two years before current fiscal year | 0 | 46
Year four, originated, three years before current fiscal year | 45 | 3
Year five, originated, four years before current fiscal year | 57 | 0
Originated, more than five years before current fiscal year | 83 | 83
Revolving loans | 26 | 25
Revolving loans converted to term | 11 | 11
Total finance receivables and loans | 249 | 168
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 | 26 | 26
Revolving loans | 10 | 10
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 36 | 36
Other | Loss | 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 | 1
Originated, more than five years before current fiscal year | 1 | 0
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 1 | 1
Commercial real estate | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 172 | 974
Year two, originated, fiscal year before current fiscal year | 1,045 | 1,471
Year three, originated, two years before current fiscal year | 1,463 | 1,157
Year four, originated, three years before current fiscal year | 1,142 | 885
Year five, originated, four years before current fiscal year | 870 | 625
Originated, more than five years before current fiscal year | 1,355 | 812
Revolving loans | 0 | 100
Revolving loans converted to term | 30 | 26
Total finance receivables and loans | 6,077 | 6,050
Commercial real estate | Pass | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 172 | 971
Year two, originated, fiscal year before current fiscal year | 1,037 | 1,452
Year three, originated, two years before current fiscal year | 1,445 | 1,129
Year four, originated, three years before current fiscal year | 1,115 | 884
Year five, originated, four years before current fiscal year | 865 | 607
Originated, more than five years before current fiscal year | 1,337 | 811
Revolving loans | 0 | 100
Revolving loans converted to term | 30 | 26
Total finance receivables and loans | 6,001 | 5,980
Commercial real estate | Special mention | Commercial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Year one, originated, current fiscal year | 0 | 3
Year two, originated, fiscal year before current fiscal year | 8 | 16
Year three, originated, two years before current fiscal year | 18 | 28
Year four, originated, three years before current fiscal year | 27 | 1
Year five, originated, four years before current fiscal year | 5 | 18
Originated, more than five years before current fiscal year | 17 | 0
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | 75 | 66
Commercial real estate | 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 | 3
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 | 1 | 1
Revolving loans | 0 | 0
Revolving loans converted to term | 0 | 0
Total finance receivables and loans | $ 1 | $ 4

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