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v3.24.3

SENIOR DEBT - Senior Debt (Details) - USD ($) | 1 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2024 | Sep. 30, 2024 | Dec. 31, 2023
Debt Instrument [Line Items] |  |  |
Principal |  | $ 1,864,347,000 | $ 1,700,000,000
Unamortized Debt Costs |  | 11,504,000 | 9,800,000
Carrying Value |  | 1,852,843,000 | 1,690,200,000
Lazard Group 2025 Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Initial Principal Amount |  | $ 400,000,000 |
Maturity Date |  | Feb. 13, 2025 |
Annual Interest Rate |  | 3.75% |
Effective Interest Rate |  | 3.77% |
Principal |  | $ 164,347,000 | 400,000,000
Unamortized Debt Costs |  | 72,000 | 531,000
Carrying Value |  | 164,275,000 | 399,469,000
Aggregate principal amount of debt purchased | $ 235,653,000 |  |
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 |  | 3.76% |
Principal |  | $ 300,000,000 | 300,000,000
Unamortized Debt Costs |  | 943,000 | 1,235,000
Carrying Value |  | 299,057,000 | 298,765,000
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 |  | 4.67% |
Principal |  | $ 500,000,000 | 500,000,000
Unamortized Debt Costs |  | 3,373,000 | 4,012,000
Carrying Value |  | 496,627,000 | 495,988,000
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 |  | 4.53% |
Principal |  | $ 500,000,000 | 500,000,000
Unamortized Debt Costs |  | 3,442,000 | 4,022,000
Carrying Value |  | 496,558,000 | 495,978,000
Lazard Group 2031 Senior Notes |  |  |
Debt Instrument [Line Items] |  |  |
Initial Principal Amount | $ 400,000,000 | $ 400,000,000 |
Maturity Date |  | Mar. 15, 2031 |
Annual Interest Rate | 6.00% | 6.00% |
Effective Interest Rate |  | 6.14% |
Principal |  | $ 400,000,000 | 0
Unamortized Debt Costs |  | 3,674,000 | 0
Carrying Value |  | $ 396,326,000 | $ 0

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