Derivative Activities - Combined Fair Value of Derivatives, by Consolidated Balance Sheets (Detail) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Derivative [Line Items]
Gross Amounts of Recognized Assets	$ 406,393	$ 452,378
Gross amounts offset in the consolidated balance sheets	(28,313)	(9,407)
Net amounts of assets presented in the consolidated balance sheets	378,080	442,971
Gross Amounts of Recognized (Liabilities)	(39,527)	(9,736)
Gross amounts offset in the consolidated balance sheets	28,313	9,407
Net amounts of (liabilities) presented in the consolidated balance sheets	$ (11,214)	$ (329)

Fair value of liability associated with financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset.

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Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value, after offset of derivative liability, of financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, before offset against an obligation to return collateral under a master netting arrangement. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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