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Other Assets - Narrative (Details) - USD ($) | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jan. 01, 2020 | Dec. 31, 2019 | Feb. 01, 2019
Other Assets [Line Items] |  |  |  |  |
Loans subject to repurchase right from Ginnie Mae | $ 1,171,000,000 |  |  | $ 560,000,000 |
Goodwill | 120,000,000 |  |  | 120,000,000 |
Impairment expense |  | $ 0 |  |  |
REO loans with government guarantee | 6,000,000 |  |  | 11,000,000 |
Payment Deferral | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |  |  |
Other Assets [Line Items] |  |  |  |  |
Loans subject to repurchase right from Ginnie Mae | 818,000,000 |  |  |  |
Trade accounts receivable |  |  |  |  |
Other Assets [Line Items] |  |  |  |  |
Allowance for credit losses | 4,000,000 |  |  |  |
Cumulative effect, period of adoption, adjustment | Other assets |  |  |  |  |
Other Assets [Line Items] |  |  |  |  |
Allowance for credit losses |  |  | $ (2,000,000) |  |
Corporate and other |  |  |  |  |
Other Assets [Line Items] |  |  |  |  |
Impairment expense | $ 4,000,000 |  |  |  |
Pacific union |  |  |  |  |
Other Assets [Line Items] |  |  |  |  |
Goodwill |  |  |  | 40,000,000 | $ 40,000,000
Intangible assets |  |  |  | $ 13,000,000 |

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