v3.26.1
Borrowings - FHLB Advances (Details) - USD ($)
$ in Billions
Jun. 30, 2026
Jun. 15, 2026
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 3.78%  
Option to cancel agreement (in days)   60 days
Notice period (in days)   1 day
new variable-rate two, FHLB    
Borrowings    
Outstanding balance $ 2.2  
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 3.78%  
Option to cancel agreement (in days) 60 days  
Notice period (in days) 1 day