v3.26.1
Loans, Leases and Allowance for Credit Losses - Amortized Cost Basis of Loans Modified (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2026
Mar. 31, 2025
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis $ 34 $ 299
% of Total Class of Financing Receivable 0.10% 0.50%
Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis $ 30 $ 51
Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis 3 1
Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis 1 247
Tech & innovation    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   $ 24
% of Total Class of Financing Receivable   0.70%
Tech & innovation | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   $ 5
Tech & innovation | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   1
Tech & innovation | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   18
Other commercial and industrial    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis $ 34 $ 85
% of Total Class of Financing Receivable 0.20% 0.80%
Other commercial and industrial | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis $ 30 $ 0
Other commercial and industrial | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis 3 0
Other commercial and industrial | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis $ 1 85
Other CRE - non-owner occupied    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   $ 153
% of Total Class of Financing Receivable   2.40%
Other CRE - non-owner occupied | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   $ 46
Other CRE - non-owner occupied | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   0
Other CRE - non-owner occupied | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   107
Construction and land development    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   $ 37
% of Total Class of Financing Receivable   0.80%
Construction and land development | Term Extension    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   $ 0
Construction and land development | Interest Rate Reduction    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   0
Construction and land development | Payment Delay    
Financing Receivable, Troubled Debt Restructuring [Line Items]    
Amortized cost basis   $ 37