v3.26.1
Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity of Investment Securities HTM and AFS (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Investment securities HTM, Fair value    
Total $ 2,341 $ 2,410
Investment securities AFS, Amortized cost    
Amortized Cost 17,203 6,699
Investment securities AFS, Fair value    
Total 16,939 6,567
U.S. Treasury securities    
Investment securities HTM, Amortized cost    
Within One Year 20  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 0  
Total 20  
Investment securities HTM, Fair value    
Within One Year 19  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 0  
Total 19 20
Investment securities AFS, Amortized cost    
Within One Year 532  
1 to 5 Years 1,312  
5 to 10 Years 0  
More Than 10 Years 895  
Amortized Cost 2,739 1,576
Investment securities AFS, Fair value    
Within One Year 532  
1 to 5 Years 1,302  
5 to 10 Years 0  
More Than 10 Years 889  
Total 2,723 1,586
U.S. Government agency securities    
Investment securities HTM, Amortized cost    
Within One Year 136  
1 to 5 Years 65  
5 to 10 Years 25  
More Than 10 Years 0  
Total 226  
Investment securities HTM, Fair value    
Within One Year 134  
1 to 5 Years 64  
5 to 10 Years 23  
More Than 10 Years 0  
Total 221 221
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 191  
5 to 10 Years 2  
More Than 10 Years 15  
Amortized Cost 208 210
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 176  
5 to 10 Years 2  
More Than 10 Years 14  
Total 192 195
Mortgage-backed securities    
Investment securities HTM, Amortized cost    
Within One Year 4  
1 to 5 Years 108  
5 to 10 Years 122  
More Than 10 Years 104  
Total 338  
Investment securities HTM, Fair value    
Within One Year 4  
1 to 5 Years 102  
5 to 10 Years 118  
More Than 10 Years 97  
Total 321 332
Investment securities AFS, Amortized cost    
Within One Year 45  
1 to 5 Years 2,265  
5 to 10 Years 1,134  
More Than 10 Years 9,037  
Amortized Cost 12,481 2,852
Investment securities AFS, Fair value    
Within One Year 45  
1 to 5 Years 2,239  
5 to 10 Years 1,106  
More Than 10 Years 8,948  
Total 12,338 2,794
State and municipal securities    
Investment securities HTM, Amortized cost    
Within One Year 0  
1 to 5 Years 12  
5 to 10 Years 47  
More Than 10 Years 1,723  
Total 1,782  
Investment securities HTM, Fair value    
Within One Year 0  
1 to 5 Years 12  
5 to 10 Years 45  
More Than 10 Years 1,554  
Total 1,611 1,667
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 2  
5 to 10 Years 5  
More Than 10 Years 1,479  
Amortized Cost 1,486 1,768
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 2  
5 to 10 Years 5  
More Than 10 Years 1,400  
Total 1,407 1,709
Asset-backed securities    
Investment securities HTM, Amortized cost    
Within One Year 16  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 91  
Total 107  
Investment securities HTM, Fair value    
Within One Year 16  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 89  
Total 105 $ 106
Corporate notes and other    
Investment securities HTM, Amortized cost    
Within One Year 0  
1 to 5 Years 57  
5 to 10 Years 11  
More Than 10 Years 0  
Total 68  
Investment securities HTM, Fair value    
Within One Year 0  
1 to 5 Years 54  
5 to 10 Years 10  
More Than 10 Years 0  
Total 64  
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 82  
5 to 10 Years 189  
More Than 10 Years 18  
Amortized Cost 289  
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 77  
5 to 10 Years 186  
More Than 10 Years 16  
Total $ 279