CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS’ EQUITY AND REDEEMABLE NONCONTROLLING INTERESTS (UNAUDITED) - USD ($) $ in Thousands	Total	Total Lazard Stockholders’ Equity	Common Stock	Additional Paid-In- Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss), Net of Tax	Common Stock Held By Subsidiaries	Noncontrolling Interests	Redeemable Noncontrolling Interests
Balance at the beginning (in shares) at Dec. 31, 2022			112,766,091				26,814,213
Balance at the beginning at Dec. 31, 2022	$ 675,399	$ 556,463	$ 1,128	$ 167,890	$ 1,676,713	$ (295,854)	$ (993,414)	$ 118,936	$ 583,471
Comprehensive income (loss):
Net income	(144,375)	(146,185)			(146,185)			1,810	8,800
Other comprehensive income (loss) - net of tax	13,967	13,968				13,968		(1)
Amortization of share-based incentive compensation	151,268	147,583		147,583				3,685
Dividend equivalents	(7,181)	(461)		12,961	(13,422)			(6,720)
Common stock dividends	$ (85,925)	(85,925)			(85,925)
Purchase of common stock (in shares)	2,697,627						2,697,627
Purchase of common stock	$ (99,097)	(99,097)					$ (99,097)
Delivery of common stock in connection with share-based incentive compensation and related tax benefit (in shares)							(3,578,995)
Delivery of common stock in connection with share-based incentive compensation and related tax expense (benefit)	(48,619)	(54,283)		(187,343)			$ 133,060	5,664
Business acquisitions and related equity transactions: Common stock issuable	1,775	1,775		1,775
Delivery of common stock (in shares)							(41,384)
Delivery of common stock	0	0		(1,533)			$ 1,533
Distributions to noncontrolling interests, net	(3,881)	0						(3,881)
LFI Consolidated Funds	(74,164)	0						(74,164)	76,614
Change in redemption value of redeemable noncontrolling interests	(589)	(412)		(412)				(177)	589
Distribution to redeemable noncontrolling interests									(585,891)
Reversal to net loss of amounts previously charged to additional paid-in-capital and noncontrolling interests	17,929	13,195		13,195				4,734
Reversal of deferred offering costs liability	20,125	14,087		14,087				6,038
Other (in shares)							5,240
Other	(747)	(730)		(581)			$ (149)	(17)
Balance at the end (in shares) at Jun. 30, 2023			112,766,091				25,896,701
Balance at the end at Jun. 30, 2023	415,885	359,978	$ 1,128	167,622	1,431,181	(281,886)	$ (958,067)	55,907	83,583
Balance at the beginning (in shares) at Mar. 31, 2023			112,766,091				26,100,898
Balance at the beginning at Mar. 31, 2023	508,409	451,426	$ 1,128	94,312	1,604,650	(282,957)	$ (965,707)	56,983	89,472
Comprehensive income (loss):
Net income	(122,979)	(124,013)			(124,013)			1,034	2,603
Other comprehensive income (loss) - net of tax	1,069	1,071				1,071		(2)
Amortization of share-based incentive compensation	80,734	79,072		79,072				1,662
Dividend equivalents	(2,094)	(213)		5,842	(6,055)			(1,881)
Common stock dividends	(43,401)	(43,401)			(43,401)
Purchase of common stock (in shares)							5,466
Purchase of common stock	(172)	(172)					$ (172)
Delivery of common stock in connection with share-based incentive compensation and related tax benefit (in shares)							(214,903)
Delivery of common stock in connection with share-based incentive compensation and related tax expense (benefit)	(3,062)	(3,062)		(11,023)			$ 7,961
Distributions to noncontrolling interests, net	(1,889)	0						(1,889)
LFI Consolidated Funds									(8,492)
Other (in shares)							5,240
Other	(730)	(730)		(581)			$ (149)
Balance at the end (in shares) at Jun. 30, 2023			112,766,091				25,896,701
Balance at the end at Jun. 30, 2023	415,885	359,978	$ 1,128	167,622	1,431,181	(281,886)	$ (958,067)	55,907	83,583
Balance at the beginning (in shares) at Dec. 31, 2023			112,766,091				25,340,287
Balance at the beginning at Dec. 31, 2023	482,187	423,759	$ 1,128	247,204	1,402,636	(289,950)	$ (937,259)	58,428	87,675
Comprehensive income (loss):
Net income	89,199	85,664			85,664			3,535	3,078
Other comprehensive income (loss) - net of tax	(16,343)	(16,343)				(16,343)
Amortization of share-based incentive compensation	159,545	158,211		158,211				1,334
Dividend equivalents	(7,833)	(603)		16,263	(16,866)			(7,230)
Common stock dividends	$ (88,731)	(88,731)			(88,731)
Purchase of common stock (in shares)	1,055,913						1,055,913
Purchase of common stock	$ (40,816)	(40,816)					$ (40,816)
Delivery of common stock in connection with share-based incentive compensation and related tax benefit (in shares)							(3,799,789)
Delivery of common stock in connection with share-based incentive compensation and related tax expense (benefit)	(62,474)	(63,715)		(204,458)			$ 140,743	1,241
Business acquisitions and related equity transactions: Common stock issuable	1,235	1,235		1,235
Distributions to noncontrolling interests, net	(1,773)	0						(1,773)
LFI Consolidated Funds									(9,822)
Other (in shares)							144
Other	(6)	(6)					$ (6)
Balance at the end (in shares) at Jun. 30, 2024			112,766,091				22,596,555
Balance at the end at Jun. 30, 2024	514,190	458,655	$ 1,128	218,455	1,382,703	(306,293)	$ (837,338)	55,535	80,931
Balance at the beginning (in shares) at Mar. 31, 2024			112,766,091				22,248,005
Balance at the beginning at Mar. 31, 2024	448,531	392,714	$ 1,128	134,573	1,384,829	(303,995)	$ (823,821)	55,817	88,475
Comprehensive income (loss):
Net income	51,592	49,909			49,909			1,683	461
Other comprehensive income (loss) - net of tax	(2,298)	(2,298)				(2,298)
Amortization of share-based incentive compensation	89,347	88,438		88,438				909
Dividend equivalents	(2,306)	(197)		6,822	(7,019)			(2,109)
Common stock dividends	(45,016)	(45,016)			(45,016)
Purchase of common stock (in shares)							491,221
Purchase of common stock	(18,811)	(18,811)					$ (18,811)
Delivery of common stock in connection with share-based incentive compensation and related tax benefit (in shares)							(142,815)
Delivery of common stock in connection with share-based incentive compensation and related tax expense (benefit)	(6,078)	(6,078)		(11,378)			$ 5,300
Distributions to noncontrolling interests, net	(765)							(765)
LFI Consolidated Funds									(8,005)
Other (in shares)							144
Other	(6)	(6)					$ (6)
Balance at the end (in shares) at Jun. 30, 2024			112,766,091				22,596,555
Balance at the end at Jun. 30, 2024	$ 514,190	$ 458,655	$ 1,128	$ 218,455	$ 1,382,703	$ (306,293)	$ (837,338)	$ 55,535	$ 80,931