XML 62 R51.htm IDEA: XBRL DOCUMENT v3.25.3
Investment Securities - Expected Maturities of Investment Securities Portfolio (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Available-for-sale, Amortized Cost    
Within one year $ 225,299  
One to five years 4,387,628  
Five to ten years 6,214,098  
Beyond ten years 1,317,728  
Total 12,144,753 $ 8,480,508
Available-for-sale, Fair Value    
Within one year 224,999  
One to five years 4,323,449  
Five to ten years 5,786,459  
Beyond ten years 1,082,980  
Total $ 11,417,887 7,458,459
Available-for-sale, Weighted Average Yield    
Within one year 3.84%  
One to five years 4.48%  
Five to ten years 3.77%  
Beyond ten years 2.96%  
Total 3.94%  
Held-to-Maturity, Amortized Cost    
Within one year $ 18,332  
One to five years 53,952  
Five to ten years 1,454,602  
Beyond ten years 1,383,329  
Total held-to-maturity securities 2,910,215 2,954,881
Held-to-Maturity, Fair Value    
Within one year 18,278  
One to five years 49,913  
Five to ten years 1,280,939  
Beyond ten years 1,169,542  
Total $ 2,518,672 $ 2,471,138
Held-to-Maturity, Weighted Average Yield    
Within one year 3.21%  
One to five years 2.03%  
Five to ten years 2.54%  
Beyond ten years 2.80%  
Total 2.66%