v3.26.1
Mortgage Servicing Assets - OMSR (Details) - Originated Mortgage Servicing Rights
$ in Millions
6 Months Ended
Jun. 30, 2026
USD ($)
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]  
Unpaid principal balance of loans sold during the period $ 3,118
Pretax gains related to the sale of mortgage loans $ 53
Weighted average servicing fee rate 0.16%
Escrow earn rate assumption 4.28%
Discount rate assumption 9.77%
Default rate assumption 1.03%
Prepayment rate assumption 11.94%