v3.26.1
Fair Value Measurement - Schedule of Carrying Amount and Estimated Fair Value of Financial Instruments (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Financial Assets:    
Cash and due from banks $ 416 $ 553
Interest-earning deposits and other securities with financial institutions 4,692 5,341
Carrying Value    
Financial Assets:    
Cash and due from banks 416 553
Interest-earning deposits and other securities with financial institutions 4,692 5,341
Cash and cash equivalents 5,108 5,894
FHLB and FRB-NY stock 870 973
Loans and leases held for investment, net 60,118 59,702
Financial Liabilities:    
Deposits 67,521 66,000
Borrowed funds 10,937 12,184
Estimated Fair Value    
Financial Assets:    
Cash and due from banks 416 553
Interest-earning deposits and other securities with financial institutions 4,692 5,341
Cash and cash equivalents 5,108 5,894
FHLB and FRB-NY stock 870 973
Loans and leases held for investment, net 59,409 56,605
Financial Liabilities:    
Deposits 67,504 65,991
Borrowed funds 10,781 11,972
Estimated Fair Value | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Financial Assets:    
Cash and due from banks 416 553
Interest-earning deposits and other securities with financial institutions 4,692 5,341
Cash and cash equivalents 5,108 5,894
FHLB and FRB-NY stock 0 0
Loans and leases held for investment, net 0 0
Financial Liabilities:    
Deposits 47,044 45,157
Borrowed funds 0 0
Estimated Fair Value | Significant Other Observable Inputs (Level 2)    
Financial Assets:    
Cash and due from banks 0 0
Interest-earning deposits and other securities with financial institutions 0 0
Cash and cash equivalents 0 0
FHLB and FRB-NY stock 870 973
Loans and leases held for investment, net 0 0
Financial Liabilities:    
Deposits 20,460 20,834
Borrowed funds 10,781 11,972
Estimated Fair Value | Significant Unobservable Inputs (Level 3)    
Financial Assets:    
Cash and due from banks 0 0
Interest-earning deposits and other securities with financial institutions 0 0
Cash and cash equivalents 0 0
FHLB and FRB-NY stock 0 0
Loans and leases held for investment, net 59,409 56,605
Financial Liabilities:    
Deposits 0 0
Borrowed funds $ 0 $ 0