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Finance Receivables and Loans, Net (Financing Receivable Credit Quality Indicators Commercial) (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019
--- | --- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Finance receivables and loans, net | $ 118,234 | $ 128,231 | $ 129,210
Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 1,668 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 2,263 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 1,691 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 1,432 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 1,114 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 1,284 |  |
Financing Receivable, Revolving | 18,293 |  |
Converted to term loans | 124 |  |
Finance receivables and loans, net | 27,869 | 38,307 | $ 38,512
Pass | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Finance receivables and loans, net |  | 34,080 |
Automotive loan | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 847 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 301 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 162 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 179 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 105 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 92 |  |
Financing Receivable, Revolving | 16,069 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 17,755 | 28,332 |
Automotive loan | Pass | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 785 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 281 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 107 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 112 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 72 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 78 |  |
Financing Receivable, Revolving | 13,802 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 15,237 | 25,235 |
Automotive loan | Special Mention | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 61 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 18 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 54 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 65 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 33 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 14 |  |
Financing Receivable, Revolving | 2,157 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 2,402 |  |
Automotive loan | Substandard | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 1 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 2 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Revolving | 82 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 85 |  |
Automotive loan | Doubtful | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 0 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 1 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 2 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Revolving | 28 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 31 |  |
Other loan | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 419 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 833 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 594 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 562 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 211 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 350 |  |
Financing Receivable, Revolving | 2,224 |  |
Converted to term loans | 122 |  |
Finance receivables and loans, net | 5,315 | 5,014 |
Other loan | Pass | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 419 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 631 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 338 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 299 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 117 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 98 |  |
Financing Receivable, Revolving | 1,912 |  |
Converted to term loans | 73 |  |
Finance receivables and loans, net | 3,887 | 4,225 |
Other loan | Special Mention | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 0 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 202 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 256 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 225 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 94 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 119 |  |
Financing Receivable, Revolving | 293 |  |
Converted to term loans | 38 |  |
Finance receivables and loans, net | 1,227 |  |
Other loan | Substandard | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 0 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 38 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 133 |  |
Financing Receivable, Revolving | 19 |  |
Converted to term loans | 11 |  |
Finance receivables and loans, net | 201 |  |
Other loan | Doubtful | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 0 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Revolving | 0 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 0 |  |
Real estate-backed loan | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 402 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 1,129 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 935 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 691 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 798 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 842 |  |
Financing Receivable, Revolving | 0 |  |
Converted to term loans | 2 |  |
Finance receivables and loans, net | 4,799 | 4,961 |
Real estate-backed loan | Pass | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 386 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 1,058 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 873 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 619 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 712 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 803 |  |
Financing Receivable, Revolving | 0 |  |
Converted to term loans | 2 |  |
Finance receivables and loans, net | 4,453 | $ 4,620 |
Real estate-backed loan | Special Mention | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 16 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 71 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 62 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 69 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 84 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 31 |  |
Financing Receivable, Revolving | 0 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 333 |  |
Real estate-backed loan | Substandard | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 0 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 3 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 7 |  |
Financing Receivable, Revolving | 0 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | 10 |  |
Real estate-backed loan | Doubtful | Commercial portfolio segment |  |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |  |
Financing Receivable, Originated in Current Fiscal Year | 0 |  |
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Two Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Three Years before Latest Fiscal Year | 0 |  |
Financing Receivable, Originated Four Years before Latest Fiscal Year | 2 |  |
Financing Receivable, Originated Five or More Years before Latest Fiscal Year | 1 |  |
Financing Receivable, Revolving | 0 |  |
Converted to term loans | 0 |  |
Finance receivables and loans, net | $ 3 |  |

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