v3.26.1
Investment Securities - Narrative (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]      
Approximate percentage rated at least AA+ 99.00%   99.00%
Investment securities, allowance for credit losses $ 63 $ 108 $ 106
Corporate debt securities      
Debt Securities, Available-for-sale [Line Items]      
Reduction in allowance for credit losses related to sales of securities $ 31 $ 17