Loans Held for Investment - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Jun. 30, 2021
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Securitized debt loans held for investment at cost	$ 12,500	$ 11,400
Seasoned Subprime Residential Mortgage Loans \| Fair Value
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Loans 90 or more days delinquent	910	$ 848
Loans Held for Investment at Fair Value
Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]
Purchases	1,100
Retained balance	$ 22

Residential mortgage loans in the securitized loan portfolio that are 90 or more days past due.

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- Definition

Secured financing obligations carried at cost as of the reporting date consisting of securitizations that are collateralized by residential adjustable or fixed rate mortgage loans that have been placed in a trust and pay interest and principal to the debt holders of that securitization.

+ References

No definition available.

+ Details

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- Definition

Securitized Loans Held For Investment By Consolidated Variable Interest Entities [Line Items]

+ References

No definition available.

+ Details

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- Definition

Amortized amount of contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 50
-Paragraph 4
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=125521744&loc=d3e122739-111746

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122492-111745

Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 50
-Section 45
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6469459&loc=d3e122501-111745

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- Definition

Amount of additions from purchases, assumption or transfer to contract to service financial assets under which the benefits of servicing are expected to more than adequately compensate the servicer.

+ References

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