v3.25.2
Investment Securities - Narrative (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2025
Jun. 30, 2025
Dec. 31, 2024
Jun. 30, 2024
Investments, Debt and Equity Securities [Abstract]        
Approximate percentage rated at least AA+   99.00% 99.00%  
Investment securities, allowance for credit losses   $ 108 $ 152 $ 177
Corporate debt securities        
Debt Securities, Available-for-sale [Line Items]        
Securities sold $ 17