v3.26.3
Allowance for Credit Losses (Collateral Dependent Loans and Leases) (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases $ 46,915 $ 47,776
Commercial real estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 26,497 27,870
Commercial real estate | Non-owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 7,338 8,206
Commercial real estate | Owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 7,219 7,314
Commercial    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 12,770 11,955
Commercial | Term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 7,097 6,713
Commercial | Lines of credit & other    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 4,055 3,643
Commercial | Leases & equipment finance    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 1,618 1,599
Residential    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 7,492 7,773
Residential | Mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 5,313 5,624
Residential | Home equity loans & lines    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 2,179 2,149
Residential Real Estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 84 72
Residential Real Estate | Commercial real estate | Non-owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
Residential Real Estate | Commercial real estate | Owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
Residential Real Estate | Commercial real estate | Multifamily    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases   0
Residential Real Estate | Commercial | Term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 1 0
Residential Real Estate | Commercial | Lines of credit & other    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
Residential Real Estate | Commercial | Leases & equipment finance    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
Residential Real Estate | Residential | Mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 81 70
Residential Real Estate | Residential | Home equity loans & lines    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 2 2
Commercial Real Estate    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 85 51
Commercial Real Estate | Commercial real estate | Non-owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 26 26
Commercial Real Estate | Commercial real estate | Owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 52 17
Commercial Real Estate | Commercial real estate | Multifamily    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases   6
Commercial Real Estate | Commercial | Term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 3 1
Commercial Real Estate | Commercial | Lines of credit & other    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 4 1
Commercial Real Estate | Commercial | Leases & equipment finance    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
Commercial Real Estate | Residential | Mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
Commercial Real Estate | Residential | Home equity loans & lines    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
General Business Assets    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 56 54
General Business Assets | Commercial real estate | Non-owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
General Business Assets | Commercial real estate | Owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
General Business Assets | Commercial real estate | Multifamily    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases   0
General Business Assets | Commercial | Term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 14 16
General Business Assets | Commercial | Lines of credit & other    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 24 19
General Business Assets | Commercial | Leases & equipment finance    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 18 19
General Business Assets | Residential | Mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
General Business Assets | Residential | Home equity loans & lines    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 0 0
Total    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 225 177
Total | Commercial real estate | Non-owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 26 26
Total | Commercial real estate | Owner occupied term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 52 17
Total | Commercial real estate | Multifamily    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases   6
Total | Commercial | Term    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 18 17
Total | Commercial | Lines of credit & other    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 28 20
Total | Commercial | Leases & equipment finance    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 18 19
Total | Residential | Mortgage    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases 81 70
Total | Residential | Home equity loans & lines    
Financing Receivable, Allowance for Credit Loss [Line Items]    
Loans and leases $ 2 $ 2