v3.26.1
Investment Securities - Contractual Maturities and Weighted-Average Yields of Securities (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 2,218  
Due > 1 Year through 5 Years 9,752  
Due > 5 Years through 10 Years 8,581  
Due > 10 Years 70,069  
Total 90,620 $ 91,051
Amortized cost basis of investment securities available for sale    
Due in 1 Year or Less 2,221  
Due > 1 Year through 5 Years 9,832  
Due > 5 Years through 10 Years 8,756  
Due > 10 Years 76,727  
Total $ 97,536 97,656
Weighted-average yield for investment securities available for sale    
Due in 1 Year or Less 3.36%  
Due > 1 Year through 5 Years 3.58%  
Due > 5 Years through 10 Years 3.66%  
Due > 10 Years 3.54%  
Total 3.55%  
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 1,299  
Total 1,694 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 393  
Due > 10 Years 1,291  
Total $ 1,684  
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 3.92%  
Total 3.96%  
U.S. Treasury securities    
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 1,241  
Due > 1 Year through 5 Years 2,539  
Due > 5 Years through 10 Years 5,186  
Due > 10 Years 0  
Total 8,966 10,013
Amortized cost basis of investment securities available for sale    
Total 8,954 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 7  
Due > 1 Year through 5 Years 149  
Due > 5 Years through 10 Years 1,104  
Due > 10 Years 67,787  
Total 69,047 69,141
Amortized cost basis of investment securities available for sale    
Total 75,708 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 1,299  
Total 1,299  
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 52  
Due > 10 Years 514  
Total 566 587
Amortized cost basis of investment securities available for sale    
Total 515 525
Total RMBS    
Fair value of investment securities available for sale:    
Due in 1 Year or Less 7  
Due > 1 Year through 5 Years 149  
Due > 5 Years through 10 Years 1,156  
Due > 10 Years 68,301  
Total 69,613 69,728
Amortized cost basis of investment securities available for sale    
Total $ 76,223 76,086
Weighted-average yield for investment securities held to maturity    
Weighted-average expected life 7 years 7 months 6 days  
Agency CMBS    
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 536  
Due > 1 Year through 5 Years 3,020  
Due > 5 Years through 10 Years 2,239  
Due > 10 Years 1,676  
Total 7,471 7,892
Amortized cost basis of investment securities available for sale    
Total $ 7,785 8,201
Weighted-average yield for investment securities held to maturity    
Weighted-average expected life 4 years 6 months  
Other securities    
Fair value of investment securities available for sale:    
Due in 1 Year or Less $ 434  
Due > 1 Year through 5 Years 4,044  
Due > 5 Years through 10 Years 0  
Due > 10 Years 92  
Total 4,570 3,418
Amortized cost basis of investment securities available for sale    
Total $ 4,574 $ 3,411