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v3.25.3

SENIOR DEBT - Senior Debt (Details) - USD ($) | 9 Months Ended |
--- | --- | ---
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

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