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Derivative Financial Instruments - Schedule of Amounts in Accumulated Other Comprehensive Income Related to Interest Rate Swaps Designated as Cash Flow Hedges (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at beginning of period $ 6,344,297 $ 5,399,526
Balance at end of period 7,258,715 6,344,297
Accumulated unrealized gains (losses) on derivative instruments    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at beginning of period (11,227) 32,049
Balance at end of period 49,912 (11,227)
Interest rate contract    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Amount reclassified from accumulated other comprehensive income or loss to interest income or expense on deposits, loans and other borrowings 16,311 72,674
Amount of gain (loss) recognized in other comprehensive income or loss 66,309 (131,720)
Interest rate contract | Accumulated unrealized gains (losses) on derivative instruments    
AOCI Attributable to Parent, Net of Tax [Roll Forward]    
Balance at beginning of period (15,508) 43,538
Balance at end of period $ 67,112 $ (15,508)