v3.26.1
Securitizations and Variable Interest Entities, Sold or Securitized Loans Serviced for Others (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Dec. 31, 2025
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total loans $ 2,806   $ 3,075
Delinquent loans and foreclosed assets 262   287
Net charge-offs 4 $ 1  
Conforming mortgage loan securitization [Member]      
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total loans 452,500   461,800
Delinquent loans and foreclosed assets 1,600   1,700
Total Commercial [Member] | Commercial mortgage [Member]      
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total loans 6   6
Delinquent loans and foreclosed assets 0   0
Net charge-offs 0 0  
Total Consumer [Member] | Residential mortgage [Member]      
Principal Balances - Off-Balance Sheet Securitized Loans [Abstract]      
Total loans 2,800   3,069
Delinquent loans and foreclosed assets 262   287
Net charge-offs 4 $ 1  
Securitizations and Variable Interest Entities Textual [Abstract]      
Foreclosed assets $ 13   $ 13