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Other Assets - (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Jul. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | --- | --- | ---
Other Assets [Line Items] |  |  |  |
Loans subject to repurchase right from Ginnie Mae | $ 266 |  |  |
Accrued revenues | 145 |  |  |
Intangible assets | 117 |  |  |
Goodwill | 23 | $ 10 |  |
Other | 244 |  |  |
Total other assets | $ 795 |  |  |
Predecessor |  |  |  |
Other Assets [Line Items] |  |  |  |
Loans subject to repurchase right from Ginnie Mae |  |  | $ 218 |
Accrued revenues |  |  | 148 |
Intangible assets |  |  | 19 |
Goodwill |  | $ 72 | 72 | $ 74
Other |  |  | 222 |
Total other assets |  |  | $ 679 |

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