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Fair Value Measurements - Unobservable Inputs (Details) - USD ($)
3 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Min | MSRs(1)    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Option adjusted spread(2) 7.10% 6.90%
Prepayment speed 7.50% 6.80%
Cost to service per loan(3) $ 45 $ 45
Min | Mortgage loans held for sale    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market pricing $ 0.450 $ 0.450
Min | Excess spread financing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Option adjusted spread(2) 7.10% 6.90%
Prepayment speed 7.80% 7.20%
Min | Mortgage servicing rights financing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Advance financing and counterparty fee rates 7.30% 7.20%
Annual advance recovery rates 16.00% 14.90%
Min | Interest Rate Lock Commitments [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Value of servicing (reflected as a percentage of loan commitment) 0 0
Max | MSRs(1)    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Option adjusted spread(2) 12.20% 12.20%
Prepayment speed 10.10% 9.30%
Cost to service per loan(3) $ 115 $ 114
Max | Mortgage loans held for sale    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market pricing $ 0.979 $ 0.973
Max | Excess spread financing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Option adjusted spread(2) 12.30% 12.30%
Prepayment speed 8.00% 7.60%
Max | Mortgage servicing rights financing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Advance financing and counterparty fee rates 8.60% 9.00%
Annual advance recovery rates 16.90% 16.80%
Max | Interest Rate Lock Commitments [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Value of servicing (reflected as a percentage of loan commitment) 0.034 0.036
Weighted Average | MSRs(1)    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Option adjusted spread(2) 7.90% 7.60%
Prepayment speed 8.40% 7.70%
Cost to service per loan(3) $ 59 $ 58
Average life(4) 7 years 4 months 24 days 7 years 9 months 18 days
Weighted Average | Mortgage loans held for sale    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Market pricing $ 0.807 $ 0.801
Weighted Average | Excess spread financing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Option adjusted spread(2) 8.90% 8.70%
Prepayment speed 7.90% 7.50%
Average life(4) 6 years 6 months 6 years 9 months 18 days
Weighted Average | Mortgage servicing rights financing    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Advance financing and counterparty fee rates 8.30% 8.50%
Annual advance recovery rates 16.70% 16.00%
Weighted Average | Interest Rate Lock Commitments [Member]    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Value of servicing (reflected as a percentage of loan commitment) 0.015 0.017