v3.26.1

SENIOR DEBT - Senior Debt (Details) - USD ($)	3 Months Ended
SENIOR DEBT - Senior Debt (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Debt Instrument [Line Items]
Principal	$ 1,700,000,000	$ 1,700,000,000
Unamortized Debt Costs	11,192,000	11,914,000
Carrying Value	1,688,808,000	1,688,086,000
Lazard Group 2028 Senior Notes
Debt Instrument [Line Items]
Initial Principal Amount	$ 500,000,000
Maturity Date	Sep. 19, 2028
Annual Interest Rate	4.50%
Effective Interest Rate	4.70%
Principal	$ 500,000,000	500,000,000
Unamortized Debt Costs	2,508,000	2,763,000
Carrying Value	497,492,000	497,237,000
Lazard Group 2029 Senior Notes
Debt Instrument [Line Items]
Initial Principal Amount	$ 500,000,000
Maturity Date	Mar. 11, 2029
Annual Interest Rate	4.375%
Effective Interest Rate	4.56%
Principal	$ 500,000,000	500,000,000
Unamortized Debt Costs	2,724,000	2,954,000
Carrying Value	497,276,000	497,046,000
Lazard Group 2031 Senior Notes
Debt Instrument [Line Items]
Initial Principal Amount	$ 400,000,000
Maturity Date	Mar. 15, 2031
Annual Interest Rate	6.00%
Effective Interest Rate	6.16%
Principal	$ 400,000,000	400,000,000
Unamortized Debt Costs	3,254,000	3,419,000
Carrying Value	396,746,000	396,581,000
Lazard Group 2035 Senior Notes
Debt Instrument [Line Items]
Initial Principal Amount	$ 300,000,000
Maturity Date	Aug. 01, 2035
Annual Interest Rate	5.625%
Effective Interest Rate	5.72%
Principal	$ 300,000,000	300,000,000
Unamortized Debt Costs	2,706,000	2,778,000
Carrying Value	$ 297,294,000	$ 297,222,000

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Lazard, Inc. 10-Q