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Mortgage Servicing Rights and Related Liabilities - Narrative (Details) - USD ($) $ in Millions | Jun. 30, 2021 | Dec. 31, 2020 | Jun. 30, 2020
--- | --- | --- | ---
Servicing Asset at Amortized Cost [Line Items] |  |  |
Excess spread financing - fair value | $ 867 | $ 934 |
Mortgage servicing rights financing - fair value | 21 | $ 33 |
Forward MSRs Sold |  |  |
Servicing Asset at Amortized Cost [Line Items] |  |  |
Principal Amount Outstanding on Loans Managed and Securitized or Asset-backed Financing Arrangement | 1,076 |  | $ 71
Forward MSRs Sold, Subservicing Retained |  |  |
Servicing Asset at Amortized Cost [Line Items] |  |  |
Principal Amount Outstanding on Loans Managed and Securitized or Asset-backed Financing Arrangement | $ 1,008 |  | $ 0

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- Definition Mortgage Servicing Rights Liability Resulting from Sale or Securitization of Servicer Advances, Rights not Accounted for as a Sale + References No definition available. + Details
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- Definition This is the sum of principal amount outstanding for both securitized and unsecuritized loans of all types. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 860 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=121570589&loc=d3e107314-111719 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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- Details
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