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Organization and Basis of Presentation - Additional Information (Details)		1 Months Ended	12 Months Ended
	Feb. 23, 2023 USD ($)	Feb. 28, 2021 USD ($)	Dec. 31, 2023 USD ($) Segment	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Jan. 01, 2024
Organization And Basis Of Presentation [Line Items]
Number of business segments | Segment			2
Initial public offering (LGAC)			$ 0	$ 0	$ 575,000,000
Deferred costs			0	20,125,000
Redeemable noncontrolling interests			87,675,000	583,471,000
LGAC Warrants
Organization And Basis Of Presentation [Line Items]
Redemption rights and liquidating distributions relating to LGAC warrants			0
LGAC
Organization And Basis Of Presentation [Line Items]
Initial public offering (LGAC)		$ 575,000,000
Redeemable noncontrolling interests				$ 583,471,000
Assets held-in-trust, noncurrent	$ 585,891,000
LGAC | Other Revenue
Organization And Basis Of Presentation [Line Items]
Losses on dissolution			17,929,000
LGAC | Net Underwriting Fee
Organization And Basis Of Presentation [Line Items]
Net underwriting fee		8,500,000
LGAC | Non-cash Deferred Underwriting Fees
Organization And Basis Of Presentation [Line Items]
Deferred costs		20,125,000	$ 20,125,000
LGAC | Other Offering Cost
Organization And Basis Of Presentation [Line Items]
Other offering costs		$ 852,000
Lazard Group LLC
Organization And Basis Of Presentation [Line Items]
Percentage of common membership interests held (as a percent)			100.00%	100.00%
Subsequent Event
Organization And Basis Of Presentation [Line Items]
Common stock, conversion ratio						1

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