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v3.19.3.a.u2

Principles of Consolidation - Additional Information (Details) $ in Millions | 3 Months Ended | 12 Months Ended | 96 Months Ended
--- | --- | --- | ---
Dec. 31, 2019 USD ($) | Mar. 31, 2019 USD ($) | Dec. 31, 2018 partnership | Dec. 31, 2019 USD ($) entity | Dec. 31, 2018 partnership entity | Dec. 31, 2019 USD ($) entity
Variable Interest Entity [Line Items] |  |  |  |  |  |
Number of partnerships consolidated | partnership |  |  | 2 |  | 2 |
Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
VIE, ownership interest rate | 80.00% |  |  |  |  |
Variable Interest Entity, Not Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Number of securitization entities to which asset transferred | entity |  |  |  | 5 | 8 | 48
Gain (loss) on securitization of financial assets |  | $ 4 |  |  |  |
Loan acquisition, aggregate amount acquired |  |  |  | $ 39 |  |
Legacy Sequoia | Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
VIE, carrying amount, assets and liabilities, net | $ 6 |  |  | 6 |  | $ 6
Sequoia Choice | Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
VIE, carrying amount, assets and liabilities, net | 256 |  |  | 256 |  | 256
Freddie Mac SLST | Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
VIE, carrying amount, assets and liabilities, net | 451 |  |  | 451 |  | 451
Freddie Mac K-Series | Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
VIE, carrying amount, assets and liabilities, net | 253 |  |  | 253 |  | 253
CoreVest LLC | Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
VIE, carrying amount, assets and liabilities, net | 195 |  |  | 195 |  | 195
Servicing Investment | Variable Interest Entity, Primary Beneficiary |  |  |  |  |  |
Variable Interest Entity [Line Items] |  |  |  |  |  |
Servicing asset, fair value | $ 53 |  |  | $ 53 |  | $ 53

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