v3.26.1
Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity of Investment Securities HTM and AFS (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Dec. 31, 2025
Investment securities HTM, Fair value    
Total $ 2,292 $ 2,410
Investment securities AFS, Amortized cost    
Amortized Cost 18,420 6,699
Investment securities AFS, Fair value    
Total 18,153 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 20  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 0  
Total 20 20
Investment securities AFS, Amortized cost    
Within One Year 615  
1 to 5 Years 1,356  
5 to 10 Years 0  
More Than 10 Years 889  
Amortized Cost 2,860 1,576
Investment securities AFS, Fair value    
Within One Year 615  
1 to 5 Years 1,337  
5 to 10 Years 0  
More Than 10 Years 886  
Total 2,838 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 135  
1 to 5 Years 64  
5 to 10 Years 23  
More Than 10 Years 0  
Total 222 221
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 188  
5 to 10 Years 2  
More Than 10 Years 15  
Amortized Cost 205 210
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 173  
5 to 10 Years 2  
More Than 10 Years 13  
Total 188 195
Mortgage-backed securities    
Investment securities HTM, Amortized cost    
Within One Year 4  
1 to 5 Years 111  
5 to 10 Years 129  
More Than 10 Years 90  
Total 334  
Investment securities HTM, Fair value    
Within One Year 4  
1 to 5 Years 104  
5 to 10 Years 123  
More Than 10 Years 84  
Total 315 332
Investment securities AFS, Amortized cost    
Within One Year 45  
1 to 5 Years 2,644  
5 to 10 Years 1,173  
More Than 10 Years 10,688  
Amortized Cost 14,550 2,852
Investment securities AFS, Fair value    
Within One Year 44  
1 to 5 Years 2,593  
5 to 10 Years 1,148  
More Than 10 Years 10,570  
Total 14,355 2,794
State and municipal securities    
Investment securities HTM, Amortized cost    
Within One Year 1  
1 to 5 Years 11  
5 to 10 Years 41  
More Than 10 Years 1,695  
Total 1,748  
Investment securities HTM, Fair value    
Within One Year 1  
1 to 5 Years 11  
5 to 10 Years 40  
More Than 10 Years 1,567  
Total 1,619 1,667
Investment securities AFS, Amortized cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 4  
More Than 10 Years 515  
Amortized Cost 519 1,768
Investment securities AFS, Fair value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 6  
More Than 10 Years 490  
Total 496 1,709
Asset-backed securities    
Investment securities HTM, Amortized cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 55  
Total 55  
Investment securities HTM, Fair value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 53  
Total 53 $ 106
Corporate notes and other    
Investment securities HTM, Amortized cost    
Within One Year 0  
1 to 5 Years 56  
5 to 10 Years 11  
More Than 10 Years 0  
Total 67  
Investment securities HTM, Fair value    
Within One Year 0  
1 to 5 Years 53  
5 to 10 Years 10  
More Than 10 Years 0  
Total 63  
Investment securities AFS, Amortized cost    
Within One Year 5  
1 to 5 Years 121  
5 to 10 Years 142  
More Than 10 Years 18  
Amortized Cost 286  
Investment securities AFS, Fair value    
Within One Year 5  
1 to 5 Years 116  
5 to 10 Years 139  
More Than 10 Years 16  
Total $ 276