Investments of Operating Entities And Consolidated Funds - Operating Entities - Receivable On And Payable For Derivative Contracts, At Fair Value (Details) $ in Thousands		12 Months Ended
		Dec. 31, 2022 USD ($) contract	Dec. 31, 2021 USD ($) contract	Dec. 31, 2020 USD ($)
Derivative [Line Items]
Receivable on derivative contracts, at fair value		$ 494,691	$ 286,135
Payable for derivative contracts, at fair value		69,665	60,163
Other Income
Derivative [Line Items]
Realized and unrealized gains/(losses) related to derivatives trading activities		(149,500)	(205,500)	$ (146,900)
Receivable on derivatives contracts, at fair value
Derivative [Line Items]
Receivable on derivative contracts, at fair value		494,691	286,135
Derivative Asset, Fair Value, Amount Offset Against Collateral	[1],[2]	(181,650)	(81,742)
Payable for derivatives contracts, at fair value
Derivative [Line Items]
Payable for derivative contracts, at fair value		69,665	60,163
Derivative Liability, Fair Value, Amount Offset Against Collateral	[1],[2]	(161,681)	(92,330)
Futures
Derivative [Line Items]
Derivative Liability, Notional Amount		0	9,378
Payable for derivative contracts, at fair value		0	266
Currency Forwards
Derivative [Line Items]
Derivative Asset, Notional Amount		7,817	10,727
Receivable on derivative contracts, at fair value		44	80
Derivative Liability, Notional Amount		212,485	149,575
Payable for derivative contracts, at fair value		2,915	1,346
Swaps
Derivative [Line Items]
Derivative Asset, Notional Amount		1,460,575	1,950,181
Receivable on derivative contracts, at fair value		644,912	305,370
Derivative Liability, Notional Amount		1,377,169	988,329
Payable for derivative contracts, at fair value		$ 218,747	$ 114,689
Options (held long)
Derivative [Line Items]
Derivative Asset, Number of Instruments Held | contract	[3]	116,707	217,393
Receivable on derivative contracts, at fair value	[3]	$ 31,385	$ 61,219
Options (held short)
Derivative [Line Items]
Derivative Liability, Number of Instruments Held | contract	[3]	98,069	182,440
Payable for derivative contracts, at fair value	[3]	$ 9,466	$ 36,192
Interest rate swap
Derivative [Line Items]
Derivative Asset, Number of Instruments Held | contract	[4]	0	285,000,000
Receivable on derivative contracts, at fair value	[4]	$ 0	$ 1,208
Derivative Liability, Notional Amount	[4]	400,000	0
Payable for derivative contracts, at fair value	[4]	$ 218	$ 0

[1] Derivatives are reported on a net basis, by counterparty, when a legal right of offset exists under an enforceable netting agreement as well as net of cash collateral received or posted under enforceable credit support agreements. See Note 2f for further information on offsetting of derivative financial instruments.

[2] Includes financial instruments subject to enforceable master netting provisions that are permitted to be offset to the extent an event of default has occurred

[3] Includes the volume of contracts for index, equity, commodity future and cash conversion options.

[4] Interest rate swap offsetting the Company's floating rate debt on the Company's term loan. See Note 16.