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Finance Receivables and Loans, Net (Past Due Financing Receivables and Loans Consumer) (Details) - USD ($) $ in Millions | Jun. 30, 2020 | Dec. 31, 2019 | Jun. 30, 2019
--- | --- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Total finance receivables and loans | $ 118,234 | $ 128,231 | $ 129,210
Consumer portfolio segment |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total finance receivables and loans | 90,365 | 89,924 |
Consumer portfolio segment | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 3,286 |
Financing receivable, recorded investment, current |  | 86,627 |
Total finance receivables and loans | 90,357 | 89,913 |
Consumer portfolio segment | Automotive loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 3,142 |
Financing receivable, recorded investment, current |  | 69,248 |
Total finance receivables and loans | 72,712 | 72,390 | 72,898
Consumer portfolio segment | Real estate-backed loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 137 |
Financing receivable, recorded investment, current |  | 17,185 |
Total finance receivables and loans | 17,413 | 17,322 | $ 17,800
Consumer portfolio segment | Mortgage Finance operations |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 76 |
Financing receivable, recorded investment, current |  | 16,105 |
Total finance receivables and loans | 16,429 | 16,181 |
Consumer portfolio segment | Mortgage - Legacy |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 61 |
Financing receivable, recorded investment, current |  | 1,080 |
Total finance receivables and loans | 984 | 1,141 |
Consumer portfolio segment | Other loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total finance receivables and loans | 240 | 212 |
Loans receivable, fair value | 8 | 11 |
Consumer portfolio segment | Other loan | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 7 |
Financing receivable, recorded investment, current |  | 194 |
Total finance receivables and loans | 232 | 201 |
Financing receivables, 30 to 59 days past due | Consumer portfolio segment | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 2,269 |
Financing receivables, 30 to 59 days past due | Consumer portfolio segment | Automotive loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 2,185 |
Total finance receivables and loans | 1,396 |  |
Financing receivables, 30 to 59 days past due | Consumer portfolio segment | Real estate-backed loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 81 |
Financing receivables, 30 to 59 days past due | Consumer portfolio segment | Mortgage Finance operations |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 56 |
Total finance receivables and loans | 83 |  |
Financing receivables, 30 to 59 days past due | Consumer portfolio segment | Mortgage - Legacy |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 25 |
Total finance receivables and loans | 12 |  |
Financing receivables, 30 to 59 days past due | Consumer portfolio segment | Other loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total finance receivables and loans | 1 |  |
Financing receivables, 30 to 59 days past due | Consumer portfolio segment | Other loan | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 3 |
Financing receivables, 60 to 89 days past due | Consumer portfolio segment | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 611 |
Financing receivables, 60 to 89 days past due | Consumer portfolio segment | Automotive loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 590 |
Total finance receivables and loans | 444 |  |
Financing receivables, 60 to 89 days past due | Consumer portfolio segment | Real estate-backed loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 19 |
Financing receivables, 60 to 89 days past due | Consumer portfolio segment | Mortgage Finance operations |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 11 |
Total finance receivables and loans | 12 |  |
Financing receivables, 60 to 89 days past due | Consumer portfolio segment | Mortgage - Legacy |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 8 |
Total finance receivables and loans | 4 |  |
Financing receivables, 60 to 89 days past due | Consumer portfolio segment | Other loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total finance receivables and loans | 2 |  |
Financing receivables, 60 to 89 days past due | Consumer portfolio segment | Other loan | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 2 |
Financing receivables, equal to greater than 90 days past due | Consumer portfolio segment | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 406 |
Financing receivables, equal to greater than 90 days past due | Consumer portfolio segment | Automotive loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 367 |
Total finance receivables and loans | 509 |  |
Financing receivables, equal to greater than 90 days past due | Consumer portfolio segment | Real estate-backed loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 37 |
Financing receivables, equal to greater than 90 days past due | Consumer portfolio segment | Mortgage Finance operations |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 9 |
Total finance receivables and loans | 10 |  |
Financing receivables, equal to greater than 90 days past due | Consumer portfolio segment | Mortgage - Legacy |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | 28 |
Total finance receivables and loans | 23 |  |
Financing receivables, equal to greater than 90 days past due | Consumer portfolio segment | Other loan |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Total finance receivables and loans | $ 1 |  |
Financing receivables, equal to greater than 90 days past due | Consumer portfolio segment | Other loan | Excludes fair value option elected other loans |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Financing receivable, recorded investment, past due |  | $ 2 |

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- Definition Amount of financing receivable past due. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 55 -Paragraph 80 -URI http://asc.fasb.org/extlink&oid=118955255&loc=SL82922355-210448 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 14 -URI http://asc.fasb.org/extlink&oid=119407570&loc=SL82919253-210447 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 7A -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953401-111524 + Details
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