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Mortgage Loans Held for Sale and Investment - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Feb. 01, 2019 | Dec. 31, 2018
Servicing Assets at Fair Value [Line Items] |  |  |  |
Mortgage loans held for sale in foreclosure | $ 20 |  |  | $ 33
Sale of mortgage loans held for sale | 6,194 |  |  |
Gain on sale of mortgage loans held for sale | 106 |  |  |
Mortgage loans held for investment in foreclosure | 13 |  |  | $ 15
Ginnie Mae Loans |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Delinquent loans acquired | 67 |  |  |
Delinquent loans securitized or sold | 39 |  |  |
Purchased loans that have re-performed | $ 43 |  |  |
Predecessor |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Sale of mortgage loans held for sale |  | $ 5,709 |  |
Gain on sale of mortgage loans held for sale |  | 60 |  |
Predecessor | Ginnie Mae Loans |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Delinquent loans acquired |  | 68 |  |
Delinquent loans securitized or sold |  | 88 |  |
Purchased loans that have re-performed |  | $ 39 |  |
Pacific Union |  |  |  |
Servicing Assets at Fair Value [Line Items] |  |  |  |
Mortgage loans held for sale |  |  | $ 536 |

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- Definition Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Mortgage Loans Held For Sale + References No definition available. + Details
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- Definition Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 35 -URI http://asc.fasb.org/extlink&oid=84173941&loc=SL49126937-111524 + Details
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- Definition The cash inflow from sales of loans that are secured with real estate mortgages and are held with the intention to resell in the near future. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 21 -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3461-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3536-108585 + Details
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