v3.25.3

SENIOR DEBT - Senior Debt (Details) - USD ($)	9 Months Ended
SENIOR DEBT - Senior Debt (Details) - USD ($)	Sep. 30, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Principal	$ 1,700,000,000	$ 1,700,000,000
Unamortized Debt Costs	12,719,000	12,948,000
Carrying Value	1,687,281,000	1,687,052,000
Lazard Group 2027 Senior Notes
Debt Instrument [Line Items]
Initial Principal Amount	$ 300,000,000
Maturity Date	Mar. 01, 2027
Annual Interest Rate	3.625%
Effective Interest Rate	0.00%
Principal	$ 0	300,000,000
Unamortized Debt Costs	0	1,213,000
Carrying Value	0	298,787,000
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	3,018,000	3,783,000
Carrying Value	496,982,000	496,217,000
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	3,184,000	3,875,000
Carrying Value	496,816,000	496,125,000
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	3,584,000	4,077,000
Carrying Value	396,416,000	395,923,000
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	0
Unamortized Debt Costs	2,933,000	0
Carrying Value	$ 297,067,000	$ 0

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