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Mortgage Loans Held for Sale and Investment - Mortgage Loans Held For Investment - UPB, Fair Value (Details) - USD ($) $ in Millions | 1 Months Ended | 2 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Dec. 31, 2018
Mortgage Loans Held For Investment [Roll Forward] |  |  |  |
Balance - beginning of period |  |  | $ 119 |
Changes in fair value |  | $ 0 | 3 |
Balance - end of period | $ 0 |  | 0 |
Mortgage loans held for investment, net |  |  |  |
Mortgage Loans Held For Investment [Roll Forward] |  |  |  |
Balance - beginning of period |  | 125 | 119 |
Sale of mortgage loans |  | 0 | (94) |
Transfers to mortgage loans held for sale |  | 0 | (12) |
Payments received from borrowers |  | (2) | (11) |
Transfers to real estate owned |  | 0 | (5) |
Changes in fair value |  | 0 | 3 |
Losses incurred |  | (1) | 0 |
Balance - end of period | 0 | $ 122 | $ 0 |
UPB |  |  |  | $ 27
Fair Value |  |  |  | $ 13
Trust 2009-A |  |  |  |
Mortgage Loans Held For Investment [Roll Forward] |  |  |  |
Sale of mortgage loans | (94) |  |  |
Transfers to mortgage loans held for sale | (12) |  |  |
Transfers to real estate owned | $ (5) |  |  |

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- Definition Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfer To Mortgage Loans Held For Sale + References No definition available. + Details
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- Definition Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Transfer To Real Estate Owned + References No definition available. + Details
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- Definition Mortgage Loans Held For Investment, Change In Fair Value + References No definition available. + Details
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- Definition Mortgage Loans Held For Investment, Losses Incurred + References No definition available. + Details
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- Definition Mortgage Loans Held For Investment, Nonaccrual Basis, Fair Value + References No definition available. + Details
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- Definition Mortgage Loans Held For Investment, Nonaccrual Basis, Unpaid Principal Balance + References No definition available. + Details
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- Definition Mortgage Loans Held For Investment [Roll Forward] + References No definition available. + Details
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- Definition Mortgage loans held for investment, subject to nonrecourse debt - Legacy Assets, net of allowance for loan losses, respectively + References No definition available. + Details
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- Definition Proceeds From Collection Of Mortgage Loans Held For Investment + References No definition available. + Details
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- Definition Amount of sale of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Details
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