v3.25.2
Qualifying Debt - Subordinated Debt Issuances (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Subordinated Debt    
Debt Instrument [Line Items]    
Principal $ 600 $ 825
Debt Issuance Costs $ 5 $ 5
Subordinated Debentures Maturing June 2031    
Debt Instrument [Line Items]    
Interest rate 3.00%  
Period of basis point spread 2.25%  
Subordinated Debentures Maturing June 2031 | Subordinated Debt    
Debt Instrument [Line Items]    
Interest rate 3.00% 3.00%
Principal $ 600 $ 600
Debt Issuance Costs $ 5 $ 5
Subordinated Debentures Maturing June 2030    
Debt Instrument [Line Items]    
Interest rate 5.25%  
Period of basis point spread 5.12%  
Subordinated Debentures Maturing June 2030 | Subordinated Debt    
Debt Instrument [Line Items]    
Interest rate   5.25%
Principal   $ 225
Debt Issuance Costs   $ 0