Fair Value - Quantitative Information about Level 3 Fair Value Measurements (Details)	Jun. 30, 2026 $ / shares	Dec. 31, 2025 $ / shares
Constant prepayment speed \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	0.046	0.048
Constant prepayment speed \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	0.328	0.473
Constant prepayment speed \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	0.064	0.068
Option-adjusted spread \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	0.053	0.052
Option-adjusted spread \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	0.053	0.052
Option-adjusted spread \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	0.053	0.052
Per loan annual cost to service \| Minimum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	65.00	65.00
Per loan annual cost to service \| Maximum
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	73.88	73.88
Per loan annual cost to service \| Weighted Average
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
MSR unobservable Input	65.03	65.03
Pull-through rate \| Minimum \| Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
IRLC unobservable Input	0.493	0.545
Pull-through rate \| Maximum \| Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
IRLC unobservable Input	1.000	1.000
Pull-through rate \| Weighted Average \| Interest rate lock commitments
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
IRLC unobservable Input	0.781	0.762