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Fair Value Measurements - Level 3 Reconciliation (Details) - Recurring Fair Value Measurements - USD ($) $ in Millions | 6 Months Ended
--- | ---
Jun. 30, 2022 | Jun. 30, 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 | 117 | 14
Purchases | 0 | 0
Issuances | 0 | 0
Sales | 0 | 0
Repayments | 292 |
Settlements | (61) | (81)
Other changes | 0 | 0
Balance - end of period | 532 | 867
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 | 14 | (12)
Purchases | 0 | 0
Issuances | 0 | 0
Sales | 0 | 0
Repayments | 0 |
Settlements | 0 | 0
Other changes | 0 | 0
Balance - end of period | 24 | 21
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 | 663 | (190)
Purchases | 1,178 | 218
Issuances | 360 | 554
Sales | (289) | (12)
Repayments | 0 |
Settlements | 0 | 0
Other changes | 16 | 34
Balance - end of period | 6,151 | 3,307
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 |
Repayments | 0 |
Settlements | 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 | (72) | (210)
Purchases | 0 | 0
Issuances | 0 | 0
Sales | 0 | 0
Repayments | 0 |
Settlements | 0 | 0
Other changes | 0 | 0
Balance - end of period | $ 62 | $ 204

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