v3.26.1
Debt Securities (Schedule Of Contractual Maturities Of Investment Securities) (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Investments, Debt and Equity Securities [Abstract]    
Available-for-sale securities, due within one year, amortized cost $ 564  
Available-for-sale securities, after one year through five years, amortized cost 2,640  
Available-for-sale securities, after five years through ten years, amortized cost 1,602  
Available-for-sale securities, after ten years, amortized cost 6,693  
Available-for-sale securities, amortized cost 11,499 $ 11,376
Available-for-sale securities, due within one year, fair value 561  
Available-for-sale securities, after one year through five years, fair value 2,600  
Available-for-sale securities, after five years through ten years, fair value 1,565  
Available-for-sale securities, after ten years, fair value 6,405  
Debt Securities, Available-for-sale 11,131 11,112
Held-to-maturity securities, due within one year, amortized cost 0  
Held-to-maturity securities, after one year through five years, amortized cost 0  
Held-to-maturity securities, after five years through ten years, amortized cost 1  
Held-to-maturity securities, after ten years, amortized cost 16  
Investment securities held to maturity 17 18
Held-to-maturity securities, due within one year, fair value 0  
Held-to-maturity securities, after one year through five years, fair value 0  
Held-to-maturity securities, after five years through ten years, fair value 1  
Held-to-maturity securities, after ten years, fair value 17  
Held-to-maturity securities, fair value $ 18 $ 19