v3.26.1
MORTGAGE LOAN SALES AND SERVICING RIGHTS - Residential Mortgage Portfolio, MSRs Fair Value Method (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Servicing Asset at Fair Value, Amount [Roll Forward]    
Fair value, beginning of period $ 593  
Fair value, end of period 735  
Residential mortgage    
Servicing Asset at Fair Value, Amount [Roll Forward]    
Fair value, beginning of period 593 $ 573
Servicing assets obtained in acquisition 140 0
New servicing assets created 28 20
Time decay (7) (7)
Payoffs (14) (7)
Changes in valuation inputs or assumptions (5) (15)
Fair value, end of period 735 564
Related loans serviced for third parties, unpaid principal balance, end of period $ 42,796 $ 33,864