v3.26.3
Loan Servicing - Residential Mortgage Servicing Activities (Details) - Residential mortgage - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Risks Inherent in Servicing Assets and Servicing Liabilities [Line Items]    
UPB of residential mortgage loan servicing portfolio $ 325,810 $ 285,966
UPB of residential mortgage loans serviced for others, primarily agency-conforming fixed-rate $ 267,522 $ 228,383