v3.26.1
Loans and Leases - Schedule of Experiencing Financial Difficulty that Subsequently Defaulted (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total $ 401 $ 19 $ 556 $ 19
Total 93 11 385 11
Interest Rate Reduction        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 244 0 328 0
Total 45 0 187 0
Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 100 13 169 13
Total 41 6 163 6
Principal Forgiveness        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0 1 0 1
Combination - Interest Rate Reduction & Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 57 6 59 6
Total 7 4 35 4
Loans and leases held for investment: | Multi-family        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total $ 259   $ 364  
Percent of Total Loan class 0.96%   1.35%  
Total $ 29   $ 286  
Loans and leases held for investment: | Multi-family | Interest Rate Reduction        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 134   199  
Total 27   148  
Loans and leases held for investment: | Multi-family | Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 85   125  
Total 2   119  
Loans and leases held for investment: | Multi-family | Principal Forgiveness        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0   0  
Loans and leases held for investment: | Multi-family | Combination - Interest Rate Reduction & Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 40   40  
Total 0   19  
Loans and leases held for investment: | Commercial real estate        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total $ 123 $ 6 $ 159 $ 6
Percent of Total Loan class 1.49% 0.05% 1.93% 0.05%
Total $ 39   $ 69  
Loans and leases held for investment: | Commercial real estate | Interest Rate Reduction        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 110   128 $ 0
Total 17   38  
Loans and leases held for investment: | Commercial real estate | Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 4   22 6
Total 22   22  
Loans and leases held for investment: | Commercial real estate | Principal Forgiveness        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0   0  
Loans and leases held for investment: | Commercial real estate | Combination - Interest Rate Reduction & Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 9   9 0
Total 0   9  
Loans and leases held for investment: | One-to-four family first mortgage        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total $ 18 $ 13 $ 31 $ 13
Percent of Total Loan class 0.31% 0.23% 0.55% 0.25%
Total $ 24 $ 11 $ 28 $ 11
Loans and leases held for investment: | One-to-four family first mortgage | Interest Rate Reduction        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0   0 0
Total 0 0 0 0
Loans and leases held for investment: | One-to-four family first mortgage | Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 11   22 7
Total 17 6 21 6
Loans and leases held for investment: | One-to-four family first mortgage | Principal Forgiveness        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0 1 0 1
Loans and leases held for investment: | One-to-four family first mortgage | Combination - Interest Rate Reduction & Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 7   9 6
Total 7 4 7 4
Loans and leases held for investment: | Commercial and Industrial        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total     1  
Loans and leases held for investment: | Commercial and Industrial | Interest Rate Reduction        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total     0  
Loans and leases held for investment: | Commercial and Industrial | Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total     1  
Loans and leases held for investment: | Commercial and Industrial | Principal Forgiveness        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total     0  
Loans and leases held for investment: | Commercial and Industrial | Combination - Interest Rate Reduction & Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total     0  
Loans and leases held for investment: | Other Consumer        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total $ 1      
Percent of Total Loan class 0.06%      
Total $ 1   1  
Loans and leases held for investment: | Other Consumer | Interest Rate Reduction        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0      
Total 1   1  
Loans and leases held for investment: | Other Consumer | Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0      
Total 0   0  
Loans and leases held for investment: | Other Consumer | Principal Forgiveness        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 0   0  
Loans and leases held for investment: | Other Consumer | Combination - Interest Rate Reduction & Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total 1      
Total $ 0   0  
Commercial and industrial | Other Consumer        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total   $ 0 $ 2 $ 0
Percent of Total Loan class   0.02% 0.11% 0.02%
Commercial and industrial | Other Consumer | Interest Rate Reduction        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total   $ 0 $ 1  
Commercial and industrial | Other Consumer | Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total   0 0  
Commercial and industrial | Other Consumer | Combination - Interest Rate Reduction & Term Extension        
Financing Receivable, Troubled Debt Restructuring [Line Items]        
Total   $ 0 $ 1