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Finance Receivables and Loans, Net (Troubled Debt Restructurings) (Details) $ in Millions | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Jun. 30, 2020 USD ($) | Jun. 30, 2019 USD ($) | Dec. 31, 2019 USD ($)
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, gross carrying value | $ 1,300 |  | $ 1,300 |  | $ 867
Loans and leases receivable, impaired, commitment to lend | $ 16 |  | $ 16 |  | $ 17
Financing receivable, modifications, number of loans | 21,338 | 5,619 | 44,181 | 13,073 |
Financing receivable, modifications, pre-modification gross carrying value | $ 391 | $ 121 | $ 746 | $ 294 |
Financing receivable, modifications, post-modification gross carrying value | $ 344 | $ 94 | $ 677 | $ 249 |
Consumer portfolio segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 21,335 | 5,618 | 44,177 | 13,066 |
Financing receivable, modifications, pre-modification gross carrying value | $ 337 | $ 99 | $ 685 | $ 231 |
Financing receivable, modifications, post-modification gross carrying value | $ 311 | $ 88 | $ 637 | $ 202 |
Consumer portfolio segment | Automotive loan |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 21,293 | 5,598 | 44,093 | 13,025 |
Financing receivable, modifications, pre-modification gross carrying value | $ 323 | $ 96 | $ 663 | $ 225 |
Financing receivable, modifications, post-modification gross carrying value | $ 297 | $ 85 | $ 615 | $ 196 |
Loans modified as a result of COVID-19 | 13,615 |  | 30,382 |  |
Pre and post modification amount of loans modified as a result of COVID-19 | $ 191 |  | $ 429 |  |
Consumer portfolio segment | Real estate-backed loan |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 42 | 20 | 84 | 41 |
Financing receivable, modifications, pre-modification gross carrying value | $ 14 | $ 3 | $ 22 | $ 6 |
Financing receivable, modifications, post-modification gross carrying value | $ 14 | $ 3 | $ 22 | $ 6 |
Consumer portfolio segment | Mortgage Finance operations |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 19 | 2 | 29 | 3 |
Financing receivable, modifications, pre-modification gross carrying value | $ 11 | $ 0 | $ 15 | $ 0 |
Financing receivable, modifications, post-modification gross carrying value | $ 11 | $ 0 | $ 15 | $ 0 |
Loans modified as a result of COVID-19 | 19 |  | 27 |  |
Pre and post modification amount of loans modified as a result of COVID-19 | $ 11 |  | $ 14 |  |
Consumer portfolio segment | Mortgage - Legacy |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 23 | 18 | 55 | 38 |
Financing receivable, modifications, pre-modification gross carrying value | $ 3 | $ 3 | $ 7 | $ 6 |
Financing receivable, modifications, post-modification gross carrying value | $ 3 | $ 3 | $ 7 | $ 6 |
Loans modified as a result of COVID-19 | 20 |  | 35 |  |
Pre and post modification amount of loans modified as a result of COVID-19 | $ 2 |  | $ 4 |  |
Commercial portfolio segment |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 3 | 1 | 4 | 7 |
Financing receivable, modifications, pre-modification gross carrying value | $ 54 | $ 22 | $ 61 | $ 63 |
Financing receivable, modifications, post-modification gross carrying value | $ 33 | $ 6 | $ 40 | $ 47 |
Commercial portfolio segment | Automotive loan |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 2 | 0 | 3 | 6 |
Financing receivable, modifications, pre-modification gross carrying value | $ 31 | $ 0 | $ 38 | $ 41 |
Financing receivable, modifications, post-modification gross carrying value | $ 26 | $ 0 | $ 33 | $ 41 |
Commercial portfolio segment | Other loan |  |  |  |  |
Financing Receivable, Troubled Debt Restructuring |  |  |  |  |
Financing receivable, modifications, number of loans | 1 | 1 | 1 | 1 |
Financing receivable, modifications, pre-modification gross carrying value | $ 23 | $ 22 | $ 23 | $ 22 |
Financing receivable, modifications, post-modification gross carrying value | $ 7 | $ 6 | $ 7 | $ 6 |

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