XML 122 R108.htm IDEA: XBRL DOCUMENT
v3.22.4

Employee Benefit Plans - Components of Net Periodic Benefit Cost (Credit) (Parenthetical) (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Compensation And Retirement Disclosure [Abstract] |  |  |
Tax expense (benefit) on other changes in plan assets and benefit obligations recognized in AOCI | $ (4,984) | $ 14,872 | $ 45

X
- Definition Tax expense (benefit) on other changes in plan assets and benefit obligations recognized in AOCI. + References No definition available. + Details
Name: | laz_TaxExpenseBenefitOnOtherChangesInPlanAssetsAndBenefitObligationsRecognizedInAOCI
Namespace Prefix: | laz_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CompensationAndRetirementDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration