v3.26.1
Borrowings - FHLB Advances (Details) - USD ($)
$ in Billions
3 Months Ended
Feb. 13, 2026
Mar. 31, 2026
Mar. 31, 2025
New variable-rate one, FHLB      
Borrowings      
Outstanding balance $ 2.0    
Variable interest rate, basis points spread over variable reference rate (as a percent)     0.15%
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]     New variable-rate one, FHLB
FHLB advances interest rate     3.79%
Option to cancel agreement (in days) 60 days    
Notice period (in days) 1 day    
new variable-rate two, FHLB      
Borrowings      
Outstanding balance   $ 2.4  
Variable interest rate, basis points spread over variable reference rate (as a percent)   0.15%  
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration]   new variable-rate two, FHLB  
FHLB advances interest rate   3.79%  
Option to cancel agreement (in days)   60 days  
Notice period (in days)   1 day