v3.26.1
Subordinated Debt Securities (Details) - USD ($)
$ in Millions
1 Months Ended 3 Months Ended
Feb. 28, 2026
Mar. 31, 2026
Mar. 31, 2025
Feb. 26, 2026
Dec. 31, 2025
Subordinated Borrowing [Line Items]          
Subordinated debt securities   $ 5,143     $ 4,155
Subordinated Debt          
Subordinated Borrowing [Line Items]          
Subordinated debt securities       $ 1,000  
Payments of Debt Issuance Costs   $ 12      
Subordinated Borrowing, Interest Rate 5.85%   6.35%