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Fair Value Measurements - Level 3 Reconciliation (Details) - Recurring Fair Value Measurements - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Excess spread financing |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of period | $ 768 | $ 934
Changes in fair value included in earnings | 79 | 41
Purchases | 0 | 0
Issuances | 0 | 0
Sales | 0 | 0
Settlements and repayments | (32) | (41)
Other changes | 0 | 0
Balance - end of period | 815 | 934
Mortgage servicing rights financing |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of period | 10 | 33
Changes in fair value included in earnings | 20 | (10)
Purchases | 0 | 0
Issuances | 0 | 0
Sales | 0 | 0
Settlements and repayments | 0 | 0
Other changes | 0 | 0
Balance - end of period | 30 | 23
LPCs |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Changes in fair value included in earnings |  | 37
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - end of period | 8 | 38
IRLCs |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - end of period | 5 | 1
Mortgage servicing rights |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of period | 4,223 | 2,703
Changes in fair value included in earnings | 563 | 278
Purchases | 1,015 | 67
Issuances | 200 | 288
Sales | (4) | (2)
Settlements and repayments | 0 | 0
Other changes | 9 | 20
Balance - end of period | 6,006 | 3,354
Equity securities |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of period | 54 |
Changes in fair value included in earnings | 0 |
Purchases | 0 |
Issuances | 0 |
Sales | 0 |
Settlements and repayments | 0 |
Other changes | 0 |
Balance - end of period | 54 |
IRLCs |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of period | 134 | 414
Changes in fair value included in earnings | (62) | (182)
Purchases | 0 | 0
Issuances | 0 | 0
Sales | 0 | 0
Settlements and repayments | 0 | 0
Other changes | 0 | 0
Balance - end of period | 72 | 232
LPCs |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Changes in fair value included in earnings |  | (30)
Balance - end of period | $ 2 | $ 8

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- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Other Fair Value Changes + References No definition available. + Details
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- Definition Amount of gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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