v3.26.1
INVESTMENT SECURITIES - Schedule of Expected Maturities of Investment Securities Portfolio (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Available-for-sale, Amortized Cost    
Within one year $ 215,995  
One to five years 3,718,906  
Five to ten years 7,363,333  
Beyond ten years 1,061,136  
Amortized Cost 12,359,370 $ 12,059,997
Available-for-sale, Fair Value    
Within one year 215,925  
One to five years 3,615,549  
Five to ten years 6,899,316  
Beyond ten years 851,595  
Total $ 11,582,385 11,384,450
Available-for-sale, Weighted Average Yield    
Within one year 4.83%  
One to five years 4.12%  
Five to ten years 4.01%  
Beyond ten years 2.93%  
Total 3.97%  
Held-to-Maturity, Amortized Cost    
Within one year $ 118  
One to five years 55,759  
Five to ten years 1,598,272  
Beyond ten years 1,190,355  
Total held-to-maturity securities 2,844,504 2,895,488
Held-to-Maturity, Fair Value    
Within one year 113  
One to five years 51,623  
Five to ten years 1,395,015  
Beyond ten years 1,021,457  
Total $ 2,468,208 $ 2,540,238
Held-to-Maturity, Weighted Average Yield    
Within one year 2.28%  
One to five years 2.03%  
Five to ten years 2.56%  
Beyond ten years 2.82%  
Total 2.66%