Derivative Financial Instruments - Schedule of Notional Amounts and Fair Values (Detail) - USD ($) $ in Thousands	Jun. 30, 2025	Dec. 31, 2024
Notional Amounts
Asset Derivatives, Notional Amounts	$ 12,275,167	$ 9,781,447
Liability Derivatives, Notional Amounts	11,944,662	13,812,216
Asset Derivatives
Asset Derivatives, Fair Value	174,505	283,185
Gross derivative instruments, before netting	247,555	302,142
Gross Amounts Offset in the Statement of Financial Position	59,898	31,881
Cash collateral pledged	114,607	251,212
Total derivative instruments, after netting	73,050	19,049
Liability Derivatives
Gross Amounts of Recognized Assets/Liabilities	76,369	32,218
Gross derivative instruments, before netting	243,787	311,561
Gross Amounts Offset in the Statement of Financial Position	59,898	31,881
Cash collateral pledged	15,860	80
Derivative Liability	$ 168,029	$ 279,600
Derivative Asset Statement Of Financial Position Extensible Enumeration Not Disclosed Flag	true	true
Cross Currency Interest Rate Contract
Notional Amounts
Asset Derivatives, Notional Amounts	$ 265,400	$ 294,500
Liability Derivatives, Notional Amounts	712,600	796,600
Designated as Hedging Instrument | Interest rate derivatives
Notional Amounts
Asset Derivatives, Notional Amounts	3,500,000	750,000
Liability Derivatives, Notional Amounts	1,750,000	4,250,000
Asset Derivatives
Asset Derivatives, Fair Value	5,666	719
Liability Derivatives
Gross Amounts of Recognized Assets/Liabilities	1,475	13,169
Not Designated as Hedging Instrument
Notional Amounts
Asset Derivatives, Notional Amounts	8,775,167	9,031,447
Liability Derivatives, Notional Amounts	10,194,662	9,562,216
Asset Derivatives
Asset Derivatives, Fair Value	241,889	301,423
Liability Derivatives
Gross Amounts of Recognized Assets/Liabilities	242,312	298,392
Not Designated as Hedging Instrument | Interest rate derivatives
Notional Amounts
Asset Derivatives, Notional Amounts	8,495,135	8,693,493
Liability Derivatives, Notional Amounts	9,406,550	8,728,767
Asset Derivatives
Asset Derivatives, Fair Value	241,293	300,120
Liability Derivatives
Gross Amounts of Recognized Assets/Liabilities	240,723	298,296
Not Designated as Hedging Instrument | Mortgage banking derivatives
Notional Amounts
Asset Derivatives, Notional Amounts	364	584
Liability Derivatives, Notional Amounts	0	0
Asset Derivatives
Asset Derivatives, Fair Value	3	3
Liability Derivatives
Gross Amounts of Recognized Assets/Liabilities	0	0
Not Designated as Hedging Instrument | Other
Notional Amounts
Asset Derivatives, Notional Amounts	279,668	337,370
Liability Derivatives, Notional Amounts	788,112	833,449
Asset Derivatives
Asset Derivatives, Fair Value	593	1,300
Liability Derivatives
Gross Amounts of Recognized Assets/Liabilities	1,589	96
Not Designated as Hedging Instrument | CME Swaps Markets
Notional Amounts
Asset Derivatives, Notional Amounts	68,100	71,100
Liability Derivatives, Notional Amounts	$ 4,200	$ 0