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Derivative Financial Instruments - Schedule of Notional Amounts and Fair Values (Detail) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Notional Amounts    
Asset Derivatives, Notional Amounts $ 9,781,447,000 $ 11,377,707,000
Liability Derivatives, Notional Amounts 13,812,216,000 11,703,252,000
Asset Derivatives    
Asset Derivatives, Fair Value 283,185,000 289,778,000
Gross derivative instruments, before netting 302,142,000 330,636,000
Gross Amounts Offset in the Statement of Financial Position 31,881,000 55,949,000
Cash collateral pledged 251,212,000 232,190,000
Total derivative instruments, after netting 19,049,000 42,497,000
Liability Derivatives    
Gross Amounts of Recognized Assets/Liabilities 32,218,000 55,949,000
Gross derivative instruments, before netting 311,561,000 335,810,000
Gross Amounts Offset in the Statement of Financial Position 31,881,000 55,949,000
Cash collateral pledged 80,000 0
Derivative Liability $ 279,600,000 $ 279,861,000
Derivative Asset Statement Of Financial Position Extensible Enumeration Not Disclosed Flag true true
CME    
Asset Derivatives    
Total derivative instruments, after netting $ 0 $ 0
Cross Currency Interest Rate Contract    
Notional Amounts    
Asset Derivatives, Notional Amounts 294,500,000 299,200,000
Liability Derivatives, Notional Amounts 796,600,000 682,900,000
Designated as Hedging Instrument | Interest rate derivatives    
Notional Amounts    
Asset Derivatives, Notional Amounts 750,000,000 2,750,000,000
Liability Derivatives, Notional Amounts 4,250,000,000 2,700,000,000
Asset Derivatives    
Asset Derivatives, Fair Value 719,000 11,140,000
Liability Derivatives    
Gross Amounts of Recognized Assets/Liabilities 13,169,000 13,679,000
Not Designated as Hedging Instrument    
Notional Amounts    
Asset Derivatives, Notional Amounts 9,031,447,000 8,627,707,000
Liability Derivatives, Notional Amounts 9,562,216,000 9,003,252,000
Asset Derivatives    
Total not designated as hedging instruments 301,423,000 319,496,000
Liability Derivatives    
Total not designated as hedging instruments 298,392,000 322,131,000
Not Designated as Hedging Instrument | Interest rate derivatives    
Notional Amounts    
Asset Derivatives, Notional Amounts 8,693,493,000 8,284,356,000
Liability Derivatives, Notional Amounts 8,728,767,000 8,272,197,000
Asset Derivatives    
Asset Derivatives, Fair Value 300,120,000 319,122,000
Liability Derivatives    
Gross Amounts of Recognized Assets/Liabilities 298,296,000 321,064,000
Not Designated as Hedging Instrument | Mortgage banking derivatives    
Notional Amounts    
Asset Derivatives, Notional Amounts 584,000 2,798,000
Liability Derivatives, Notional Amounts 0 0
Asset Derivatives    
Asset Derivatives, Fair Value 3,000 37,000
Liability Derivatives    
Gross Amounts of Recognized Assets/Liabilities 0 0
Not Designated as Hedging Instrument | Other    
Notional Amounts    
Asset Derivatives, Notional Amounts 337,370,000 340,553,000
Liability Derivatives, Notional Amounts 833,449,000 731,055,000
Asset Derivatives    
Asset Derivatives, Fair Value 1,300,000 337,000
Liability Derivatives    
Gross Amounts of Recognized Assets/Liabilities 96,000 1,067,000
Not Designated as Hedging Instrument | CME Swaps Markets    
Notional Amounts    
Asset Derivatives, Notional Amounts 71,100,000 113,800,000
Liability Derivatives, Notional Amounts 0 0
Interest Rate Lock Commitments    
Liability Derivatives    
Approved floating rate commitments $ 400,000 $ 1,000,000