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Summary of Impact of Derivative Financial Instruments to Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Derivative [Line Items]
Unrealized Gain (Loss) on Derivatives and Commodity Contracts	$ (81,481)	$ (149,855)
Freestanding Derivatives
Derivative [Line Items]
Realized Gains (Losses)	13,306	10,527
Net Change in Unrealized Gains (Losses)	(94,787)	(160,382)
Freestanding Derivatives | Total Return Swaps
Derivative [Line Items]
Realized Gains (Losses)	8,320	4,652
Net Change in Unrealized Gains (Losses)	(5,519)	(13)
Freestanding Derivatives | Credit Default Swap
Derivative [Line Items]
Realized Gains (Losses)	75	(51)
Net Change in Unrealized Gains (Losses)	(54)	(228)
Freestanding Derivatives | Interest Rate Contracts
Derivative [Line Items]
Realized Gains (Losses)	(614)	336
Net Change in Unrealized Gains (Losses)	1,024	(2,120)
Freestanding Derivatives | Foreign Currency Contracts
Derivative [Line Items]
Realized Gains (Losses)	5,525	5,590
Net Change in Unrealized Gains (Losses)	(8,222)	(3,183)
Freestanding Derivatives | Equity Options
Derivative [Line Items]
Net Change in Unrealized Gains (Losses)	$ (82,016)	$ (154,838)

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The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings.

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The net change in the difference between the fair value and the carrying value, or in the comparative fair values, of derivative instruments, including options, swaps, futures, and forward contracts, held at each balance sheet date, that was included in earnings for the period.

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