XML 66 R54.htm IDEA: XBRL DOCUMENT v3.25.4
Investment Securities - Schedule of Amortized Cost and Fair Value by Contractual Maturity of Investment Securities HTM and AFS (Details) - USD ($)
$ in Thousands
Dec. 31, 2025
Dec. 31, 2024
Investment Securities HTM, Fair Value    
Total $ 2,419,349 $ 2,524,525
Investment Securities AFS, Amortized Cost    
Amortized Cost 7,662,541 8,079,918
Investment Securities AFS, Fair Value    
Total 7,411,072 7,551,018
Mortgage-backed securities issued by U.S. Government sponsored enterprises    
Investment Securities HTM, Amortized Cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 2,409,184  
Total 2,409,184  
Investment Securities HTM, Fair Value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 2,419,349  
Total 2,419,349 2,524,525
Investment Securities AFS, Amortized Cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 2,113,876  
Amortized Cost 2,113,876 2,294,700
Investment Securities AFS, Fair Value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 1,961,794  
Total 1,961,794 2,034,035
U.S. Treasury securities    
Investment Securities AFS, Amortized Cost    
Within One Year 212,355  
1 to 5 Years 961,112  
5 to 10 Years 0  
More Than 10 Years 0  
Amortized Cost 1,173,467 1,214,363
Investment Securities AFS, Fair Value    
Within One Year 213,400  
1 to 5 Years 981,707  
5 to 10 Years 0  
More Than 10 Years 0  
Total 1,195,107 1,212,742
Mortgage-backed securities issued by U.S. Government agencies    
Investment Securities AFS, Amortized Cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 1,456,102  
Amortized Cost 1,456,102 1,583,331
Investment Securities AFS, Fair Value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 0  
More Than 10 Years 1,387,953  
Total 1,387,953 1,462,790
Collateralized mortgage obligations issued by U.S. Government agencies or sponsored enterprises    
Investment Securities AFS, Amortized Cost    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 6,847  
More Than 10 Years 580,007  
Amortized Cost 586,854 657,453
Investment Securities AFS, Fair Value    
Within One Year 0  
1 to 5 Years 0  
5 to 10 Years 6,771  
More Than 10 Years 499,876  
Total 506,647 550,201
Commercial mortgage-backed securities issued by U.S. Government agencies or sponsored enterprises    
Investment Securities AFS, Amortized Cost    
Within One Year 50,107  
1 to 5 Years 1,743,343  
5 to 10 Years 522,173  
More Than 10 Years 16,619  
Amortized Cost 2,332,242 2,290,968
Investment Securities AFS, Fair Value    
Within One Year 49,270  
1 to 5 Years 1,768,233  
5 to 10 Years 527,523  
More Than 10 Years 14,545  
Total $ 2,359,571 $ 2,253,116