Organization and Basis of Presentation - Additional Information (Detail)			1 Months Ended	12 Months Ended
	Feb. 23, 2023 USD ($)	Feb. 04, 2019	Feb. 28, 2021 USD ($)	Dec. 31, 2022 USD ($) Segment	Dec. 31, 2021 USD ($)
Organization And Basis Of Presentation [Line Items]
Governing operating agreement, date		Feb. 04, 2019
Number of business segments | Segment				2
Deferred costs associated with IPO of special purpose acquisition entity				$ 20,125,000	$ 20,125,000
Redeemable noncontrolling interests				583,471,000	$ 575,000,000
Subsequent Event [Member] | LGAC Warrants [Member]
Organization And Basis Of Presentation [Line Items]
Redemption rights or liquidating distributions	$ 0
LGAC [Member]
Organization And Basis Of Presentation [Line Items]
LGAC IPO			$ 575,000,000
Redeemable noncontrolling interests				583,471,000
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				8,500,000
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				20,125,000
LGAC [Member] | Other Offering Cost [Member]
Organization And Basis Of Presentation [Line Items]
Other offering costs associated with IPO of special purpose acquisition entity				$ 852,000
Lazard Group LLC [Member]
Organization And Basis Of Presentation [Line Items]
Percentage of common membership interests held				100.00%	100.00%