v3.26.1
Investment Securities - Contractual Maturities and Weighted-Average Yields of Securities (Details) - USD ($)
$ in Millions
6 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 2,025  
Due > 1 Year through 5 Years 10,979  
Due > 5 Years through 10 Years 8,597  
Due > 10 Years 68,440  
Total 90,041 $ 91,051
Amortized cost basis of investment securities available for sale    
Due in 1 Year or Less 2,028  
Due > 1 Year through 5 Years 11,086  
Due > 5 Years through 10 Years 8,797  
Due > 10 Years 75,043  
Total $ 96,954 97,656
Weighted-average yield for investment securities available for sale    
Due in 1 Year or Less 3.95%  
Due > 1 Year through 5 Years 3.66%  
Due > 5 Years through 10 Years 3.56%  
Due > 10 Years 3.56%  
Total 3.58%  
Amortized cost basis of investment securities held to maturity:    
Due in 1 Year or Less $ 0  
Due > 1 Year through 5 Years 0  
Due > 5 Years through 10 Years 395  
Due > 10 Years 2,342  
Total 2,737 0
Fair value of investment securities held to maturity    
Due in 1 Year or Less 0  
Due > 1 Year through 5 Years 0  
Due > 5 Years through 10 Years 390  
Due > 10 Years 2,323  
Total $ 2,713  
Weighted-average yield for investment securities held to maturity    
Due in 1 Year or Less 0.00%  
Due > 1 Year through 5 Years 0.00%  
Due > 5 Years through 10 Years 4.09%  
Due > 10 Years 4.02%  
Total 4.03%  
U.S. Treasury securities    
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 425  
Due > 1 Year through 5 Years 4,171  
Due > 5 Years through 10 Years 4,580  
Due > 10 Years 0  
Total 9,176 10,013
Amortized cost basis of investment securities available for sale    
Total 9,157 9,958
Amortized cost basis of investment securities held to maturity:    
Due in 1 Year or Less 0  
Due > 1 Year through 5 Years 0  
Due > 5 Years through 10 Years 395  
Due > 10 Years 0  
Total 395  
RMBS, Agency    
Fair value of investment securities available for sale:    
Due in 1 Year or Less 6  
Due > 1 Year through 5 Years 144  
Due > 5 Years through 10 Years 1,490  
Due > 10 Years 66,209  
Total 67,849 69,141
Amortized cost basis of investment securities available for sale    
Total 74,505 75,561
Amortized cost basis of investment securities held to maturity:    
Due in 1 Year or Less 0  
Due > 1 Year through 5 Years 0  
Due > 5 Years through 10 Years 0  
Due > 10 Years 2,342  
Total 2,342  
RMBS, Non-agency    
Fair value of investment securities available for sale:    
Due in 1 Year or Less 0  
Due > 1 Year through 5 Years 0  
Due > 5 Years through 10 Years 58  
Due > 10 Years 499  
Total 557 587
Amortized cost basis of investment securities available for sale    
Total 506 525
Total RMBS    
Fair value of investment securities available for sale:    
Due in 1 Year or Less 6  
Due > 1 Year through 5 Years 144  
Due > 5 Years through 10 Years 1,548  
Due > 10 Years 66,708  
Total 68,406 69,728
Amortized cost basis of investment securities available for sale    
Total $ 75,011 76,086
Weighted-average yield for investment securities held to maturity    
Weighted-average expected life 7 years 8 months 12 days  
Agency CMBS    
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 734  
Due > 1 Year through 5 Years 2,752  
Due > 5 Years through 10 Years 2,452  
Due > 10 Years 1,634  
Total 7,572 7,892
Amortized cost basis of investment securities available for sale    
Total $ 7,890 8,201
Weighted-average yield for investment securities held to maturity    
Weighted-average expected life 4 years 3 months 18 days  
Other securities    
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 860  
Due > 1 Year through 5 Years 3,912  
Due > 5 Years through 10 Years 17  
Due > 10 Years 98  
Total 4,887 3,418
Amortized cost basis of investment securities available for sale    
Total $ 4,896 $ 3,411