Organization and Basis of Presentation - Additional Information (Detail) $ in Thousands		1 Months Ended	3 Months Ended	12 Months Ended
	Feb. 23, 2023 USD ($)	Feb. 28, 2021 USD ($)	Mar. 31, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)
Organization And Basis Of Presentation [Line Items]
Governing operating agreement, date				Feb. 04, 2019
Operating agreement, amended and restated date			Jan. 01, 2023
Number of business segments | Segment			2
Redeemable noncontrolling interests			$ 89,472	$ 583,471
LGAC Warrants [Member]
Organization And Basis Of Presentation [Line Items]
Distribution of cash held in trust account due to liquidation of special purpose acquisition entity	$ 585,891
Redemption rights or liquidating distributions relating to LGAC warrants			0
LGAC [Member] | Revenue-Other [Member]
Organization And Basis Of Presentation [Line Items]
Losses recognized on the liquidation of a special purpose acquisition entity			17,929
LGAC [Member]
Organization And Basis Of Presentation [Line Items]
LGAC IPO		$ 575,000
Redeemable noncontrolling interests				$ 583,471
LGAC [Member] | Net Underwriting Fee [Member]
Organization And Basis Of Presentation [Line Items]
Net underwriting fee associated with the IPO of a special purpose acquisition company		8,500
LGAC [Member] | Non-cash Deferred Underwriting Fees [Member]
Organization And Basis Of Presentation [Line Items]
Deferred costs associated with IPO of special purpose acquisition entity		20,125	$ 20,125
LGAC [Member] | Other Offering Cost [Member]
Organization And Basis Of Presentation [Line Items]
Other offering costs associated with IPO of special purpose acquisition entity		$ 852
Lazard Group LLC [Member]
Organization And Basis Of Presentation [Line Items]
Percentage of common membership interests held			100.00%	100.00%