v3.26.1
Mortgage Servicing Rights - Summary of Key Unobservable Inputs Used in Determining the Fair Value (Details) - MSR - USD ($)
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Minimum    
Servicing Assets at Fair Value [Line Items]    
Discount rates (as a percent) 7.40% 7.80%
Annual prepayment speeds (as a percent) 6.30% 5.40%
Cost of servicing $ 74 $ 74
Maximum    
Servicing Assets at Fair Value [Line Items]    
Discount rates (as a percent) 12.50% 13.70%
Annual prepayment speeds (as a percent) 19.20% 22.10%
Cost of servicing $ 159 $ 149
Weighted Average    
Servicing Assets at Fair Value [Line Items]    
Discount rates (as a percent) 8.90% 9.40%
Annual prepayment speeds (as a percent) 8.60% 10.30%
Cost of servicing $ 85 $ 87