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Loans and ACL - Nonperforming Assets and Residential Mortgage Loans in the Process of Foreclosure (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Receivables [Abstract]    
Nonperforming loans and leases HFI $ 1,692 $ 1,577
Foreclosed real estate 5 3
Other foreclosed property 51 53
Total NPAs 1,748 1,633
Residential mortgage loans in the process of foreclosure $ 268 $ 247