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Fair Value Measurements - Reconciliation of Level 3 (Details) - Recurring Fair Value Measurements - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Excess spread financing |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of year | $ 437 | $ 509
Changes in fair value included in earnings | 15 | 8
Purchases/additions(1) | 0 | 0
Issuances | 0 | 0
Sales/dispositions(1) | 0 | 0
Repayments | (2) | (9)
Settlements | (64) | (71)
Other changes | 0 | 0
Balance - end of year | 386 | 437
Mortgage servicing rights financing |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of year | 29 | 19
Changes in fair value included in earnings | 3 | 10
Purchases/additions(1) | 0 | 0
Issuances | 0 | 0
Sales/dispositions(1) | 0 | 0
Repayments | 0 | 0
Settlements | 0 | 0
Other changes | 0 | 0
Balance - end of year | 32 | 29
LPCs |  |
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - end of year | 7 |
Mortgage servicing rights |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of year | 9,090 | 6,654
Changes in fair value included in earnings | (273) | (483)
Purchases/additions(1) | 3,004 | 3,189
Issuances | 460 | 273
Sales/dispositions(1) | (583) | (573)
Repayments | 0 | 0
Settlements | 0 | 0
Other changes | 38 | (30)
Balance - end of year | 11,736 | 9,090
Mortgage loans held for sale |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of year | 81 | 74
Changes in fair value included in earnings | 5 | 18
Purchases/additions(1) | 130 | 180
Issuances | 0 | 0
Sales/dispositions(1) | (153) | (189)
Repayments | (2) | (6)
Settlements | 0 | 0
Other changes | (1) | 4
Balance - end of year | 60 | 81
Equity investments |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of year | 8 | 45
Changes in fair value included in earnings | 0 | (37)
Purchases/additions(1) | 0 | 0
Issuances | 0 | 0
Sales/dispositions(1) | 0 | 0
Repayments | 0 | 0
Settlements | 0 | 0
Other changes | 0 | 0
Balance - end of year | 8 | 8
IRLCs |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |
Balance - beginning of year | 21 | 22
Changes in fair value included in earnings | 1 | (1)
Purchases/additions(1) | 0 | 0
Issuances | 0 | 0
Sales/dispositions(1) | 0 | 0
Repayments | 0 | 0
Settlements | 0 | 0
Other changes | 0 | 0
Balance - end of year | $ 22 | $ 21

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