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Organization and Basis of Presentation - Additional Information (Details) |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Feb. 23, 2023 USD ($) | Feb. 28, 2021 USD ($) | Dec. 31, 2023 USD ($) Segment | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Jan. 01, 2024
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Number of business segments | Segment |  |  | 2 |  |  |
Initial public offering (LGAC) |  |  | $ 0 | $ 0 | $ 575,000,000 |
Deferred costs |  |  | 0 | 20,125,000 |  |
Redeemable noncontrolling interests |  |  | 87,675,000 | 583,471,000 |  |
LGAC Warrants |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Redemption rights and liquidating distributions relating to LGAC warrants |  |  | 0 |  |  |
LGAC |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Initial public offering (LGAC) |  | $ 575,000,000 |  |  |  |
Redeemable noncontrolling interests |  |  |  | $ 583,471,000 |  |
Assets held-in-trust, noncurrent | $ 585,891,000 |  |  |  |  |
LGAC | Other Revenue |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Losses on dissolution |  |  | 17,929,000 |  |  |
LGAC | Net Underwriting Fee |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Net underwriting fee |  | 8,500,000 |  |  |  |
LGAC | Non-cash Deferred Underwriting Fees |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Deferred costs |  | 20,125,000 | $ 20,125,000 |  |  |
LGAC | Other Offering Cost |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Other offering costs |  | $ 852,000 |  |  |  |
Lazard Group LLC |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Percentage of common membership interests held (as a percent) |  |  | 100.00% | 100.00% |  |
Subsequent Event |  |  |  |  |  |
Organization And Basis Of Presentation [Line Items] |  |  |  |  |  |
Common stock, conversion ratio |  |  |  |  |  | 1

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