Trading Arrangements, by Individual Trading Arrangements, by Individual [Table] Trading Arrangement: Trading Arrangement [Axis] Maximum Maximum [Member] Title of each class Title of 12(b) Security Net income attributable to Lazard - diluted Net Income (Loss) Available to Common Stockholders, Diluted Subsequent Event Subsequent Event [Member] Derivative Instruments Gain Loss By Hedging Relationship By Income Statement Location By Derivative Instrument Risk [Table] Derivative Instruments, Gain (Loss) [Table] Adjustment to Compensation, Amount Adjustment to Compensation Amount Fair Value Investments Entities That Calculate Net Asset Value Per Share [Line Items] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items] Pledged Status [Axis] Pledged Status [Axis] Financial Instrument Financial Instrument [Axis] Gain on sale and deconsolidation of business Gain on Edgewater transaction Gain on sale and deconsolidation of Edgewater Deconsolidation, Gain (Loss), Amount Segment Reporting [Abstract] Segment Reporting [Abstract] EMPLOYEE BENEFIT PLANS Retirement Benefits [Text Block] Accrued compensation and benefits Employee-related Liabilities Derivative Instrument Derivative Instrument [Axis] Net derivatives in "other assets" and "other liabilities" Other Assets And Other Liabilities [Member] Other assets and other liabilities. Fair Value, Measurements, Recurring Measurement Frequency [Axis] Charges to retained earnings, net of estimated forfeitures Charge To Retained Earnings Pertaining To Issuance Of Restricted Stock Units And Restricted Stock In Connection With Participation Rights Charge to retained earnings pertaining to issuance of restricted stock units and restricted stock in connection with participation rights. Furniture and equipment Furniture And Equipment [Member] Furniture and equipment. LFI and Similar Deferred Compensation Arrangements Lazard Fund Interest And Similar Deferred Compensation Arrangements [Member] Lazard Fund Interest And Similar Deferred Compensation Arrangements Sale and deconsolidation of business Goodwill, Divestiture Consolidated Entities Consolidated Entities [Axis] Entity Common Stock, Shares Outstanding Entity Common Stock, Shares Outstanding Lazard Fund Interests Lazard Fund Interest [Member] Lazard fund interest. OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX: Other Comprehensive Income (Loss), Net of Tax [Abstract] Consolidated Entities Consolidated Entities [Domain] RELATED PARTIES Related Party Transactions Disclosure [Text Block] Distributions to noncontrolling interests Payments to Noncontrolling Interests Common stock, par value (in USD per share) Common Stock, Par or Stated Value Per Share Reclassification out of Accumulated Other Comprehensive Income Reclassification out of Accumulated Other Comprehensive Income [Member] Units beginning balance (in shares) Units ending balance (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number Total return swaps and other Return Swaps And Other [Member] Return swaps and other. Vesting One Share-Based Payment Arrangement, Tranche One [Member] Retirement Benefits [Abstract] Retirement Benefits [Abstract] Performance-based restricted stock units Performance Based Restricted Stock Unit [Member] Performance based restricted stock unit PRSU. Schedule of Activity Relating to Share-based Awards Share-Based Payment Arrangement, Activity [Table Text Block] Outstanding Aggregate Erroneous Compensation Amount Outstanding Aggregate Erroneous Compensation Amount Number of reportable segments Number of Reportable Segments Business acquisitions and related equity transactions: Common stock issuable Stock Issued Issuable During Period Value Business Acquisitions Mergers Stock Issued Issuable During Period Value Business Acquisitions Mergers Entity Address, City or Town Entity Address, City or Town Units granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-based compensation arrangement by share-based payment award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] 2018 Equity Incentive Plan Two Thousand And Eighteen Plan [Member] Two thousand and eighteen plan. Receivables [Abstract] Receivables [Abstract] Statement of Financial Position [Abstract] Condensed Consolidated Statements of Financial Condition Statement of Financial Position [Abstract] CFLF Compagnie Financiere Lazard Freres Sas [Member] Compagnie Financiere Lazard Freres SAS. Derivative liabilities, fair value, counterparty and cash collateral netting Derivative Fair Value Counterparty And Cash Collateral Netting Amount Offset Against Gross Derivative Liability Amount of counterparty and cash collateral netting offset against gross derivative liability. Investments redeemable (as percent) Fair Value Investments Entities That Calculate Net Asset Value Per Share Investment Redemption Frequency Percentage States the percentage with which the entity can redeem its investment, or portion thereof, per period (for example, annually, semi-annually, quarterly) for each of those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments), by major category. Carrying amount Other Fees And Customers And Other Receivables Not Discussed Elsewhere In The Note Other Fees And Customers And Other Receivables Not Discussed Elsewhere In The Note Other intangible assets (net of accumulated amortization) Intangible Asset, Finite-Lived, after Accumulated Amortization Peer Group Total Shareholder Return Amount Peer Group Total Shareholder Return Amount Level 2 Fair Value, Inputs, Level 2 [Member] Total Shareholder Return Vs Peer Group Total Shareholder Return Vs Peer Group [Text Block] OTHER COMPREHENSIVE INCOME (LOSS), NET OF TAX Other comprehensive income (loss) - net of tax Other Comprehensive Income (Loss), Net of Tax Non-Rule 10b5-1 Arrangement Terminated Non-Rule 10b5-1 Arrangement Terminated [Flag] Christopher A. Weideman [Member] Christopher A. Weideman Other Other expenses Other Expenses Dividends [Domain] Dividends [Domain] Subsequent Event Type Subsequent Event Type [Axis] Debt Instrument [Table] Schedule of Long-Term Debt Instruments [Table] Class Of Treasury Stock [Table] Class of Treasury Stock [Table] Variable Interest Entity, Measure of Activity [Abstract] Variable Interest Entity, Measure of Activity [Abstract] Schedule of Select Financial Information and Reconciliation of Adjusted Operating Income (Loss) to Consolidated Segment Reporting [Table Text Block] Related Party Related and Nonrelated Parties [Axis] Monthly Monthly [Member] Monthly. Proceeds from (payments for) customer deposits, net Proceeds From (Payments To) Customer Deposits Net Proceeds from (payments to) customer deposits net LFI and other similar deferred compensation arrangements Lazard Fund Interests And Other Similar Deferred Compensation Arrangements [Member] Lazard fund interests and other similar deferred compensation arrangements. Document Period End Date Document Period End Date Christoper Hogbin [Member] Christoper Hogbin Preferred stock shares outstanding (in shares) Preferred Stock, Shares Outstanding Initial Principal Amount Debt Instrument, Face Amount Duration of senior revolving credit facility, in years Debt Instrument, Term Common stock held in treasury, at cost (0 and 17,822,122 shares at June 30, 2026 and December 31, 2025, respectively) Treasury Stock, Common, Value Effective Interest Rate Debt Instrument, Interest Rate, Effective Percentage Contributions from noncontrolling interests Proceeds from Noncontrolling Interests Payable pursuant to tax receivable agreement Payable Pursuant To Tax Receivable Agreement Payable pursuant to the tax receivable agreement. Reclassification out of Accumulated Other Comprehensive Income [Domain] Reclassification out of Accumulated Other Comprehensive Income [Domain] Vested in period, fair value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value Accumulated other comprehensive loss, net of tax Accumulated Other Comprehensive Income (Loss), Net of Tax Entity Shell Company Entity Shell Company Net Unrealized Gains/Losses Included In Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Gain (Loss) Included in Earnings Adjusted Non-compensation Expense Adjusted Non-compensation Expense Adjusted Non-compensation Expense Employee Benefit Plans Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Schedule of Activity in Allowance for Credit Losses Accounts Receivable, Allowance for Credit Loss [Table Text Block] Average price per share (in USD per share) Average Price Per Common Share Average price per common shares on shares repurchased during the period. Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] Broker-Dealer, Net Capital Requirement, SEC Regulation [Abstract] NET INCOME PER SHARE OF COMMON STOCK Earnings Per Share [Text Block] NET INCOME PER SHARE OF COMMON STOCK: Earnings Per Share [Abstract] Document Fiscal Period Focus Document Fiscal Period Focus Peer Group Issuers, Footnote Peer Group Issuers, Footnote [Text Block] Total Liabilities Liabilities Trading Symbol Trading Symbol Total AOCI AOCI Including Portion Attributable to Noncontrolling Interest [Member] Additions to property Payments to Acquire Property, Plant, and Equipment Company Selected Measure Name Company Selected Measure Name Income Tax Disclosure [Abstract] Income Tax Disclosure [Abstract] FAIR VALUE MEASUREMENTS Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block] Sponsored Funds Sponsored Funds [Member] Sponsored Funds Derivative assets fair value counterparty and cash collateral netting Derivative Fair Value Counterparty And Cash Collateral Netting Amount Offset Against Gross Derivative Asset Amount of counterparty and cash collateral netting offset against gross derivative asset. Compensation liability, granted Derivative Liability Granted Derivative liability, granted. Schedule of Net Gains and (Losses) With Respect To Derivative Instruments (Including Derivatives Not Designed As Hedging Instruments) Derivatives Not Designated as Hedging Instruments [Table Text Block] Credit Facility Credit Facility [Domain] CASH FLOWS FROM OPERATING ACTIVITIES: Cash Provided by (Used in) Operating Activity, Including Discontinued Operation [Abstract] Executive Officers Executive Officer [Member] Derivative liabilities, collateral not netted on the condensed consolidated statement of financial condition Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash/Security Not Offset Derivative Liability, Security Sold under Agreement to Repurchase, and Security Loaned, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash/Security Not Offset Equity Valuation Assumption Difference, Footnote Equity Valuation Assumption Difference, Footnote [Text Block] Estimated Depreciable Life in Years Property, Plant, and Equipment, Useful Life U.S. Treasury Securities US Treasury Securities [Member] Foreign Currency Translation Adjustments Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Foreign Currency Translation Adjustments Amount of foreign currency translation adjustments of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Award vesting percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage Schedule Of Share Based Compensation Arrangements By Share Based Payment Award [Table] Schedule of Share-Based Compensation Arrangements by Share-Based Payment Award [Table] Weighted average number of incremental shares of common stock issuable from share-based incentive compensation (in shares) Weighted Average Number of Shares Outstanding, Diluted, Adjustment Award Timing Predetermined Award Timing Predetermined [Flag] Comprehensive income (loss): Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest [Abstract] Adjustment To PEO Compensation, Footnote Adjustment To PEO Compensation, Footnote [Text Block] Amortization of share-based incentive compensation APIC, Share-Based Payment Arrangement, Increase for Cost Recognition LFI Consolidated Funds redemptions Payments For Consolidated Funds Redemptions Redemption payments for consolidated funds Level 1 Fair Value, Inputs, Level 1 [Member] Effective income tax rates (as a percent) Effective Income Tax Rate Reconciliation, Percent Purchase and cancellation of common stock Stock Repurchased and Retired During Period, Value Actuarial gain (loss) (net of tax expense (benefit) of $105 and $(2,736) for the three months ended June 30, 2026 and 2025, respectively, and $1,367 and $(4,338) for the six months ended June 30, 2026 and 2025, respectively) Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, after Tax Preferred stock par value (in USD per share) Preferred Stock, Par or Stated Value Per Share Fair value of senior debt Long-Term Debt, Fair Value July 2024 Share Repurchase Program Date July 2024 [Member] Share Repurchase Program Date July 2024 Vesting [Domain] Vesting [Domain] Plan Name Plan Name [Domain] Antidilutive Securities [Axis] Antidilutive Securities [Axis] Scenario [Domain] Scenario [Domain] Operating lease right-of-use assets Operating Lease, Right-of-Use Asset AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Derivative Liability, Statement of Financial Position [Extensible Enumeration] Fair Value Disclosures [Abstract] Fair Value Disclosures [Abstract] PIPRs Excluding SP-PIPRs Profits Interest Participation Rights Excluding Stock Price PIPRs [Member] Profits Interest Participation Rights Excluding Stock Price PIPRs Debt Instrument, Name Debt Instrument, Name [Domain] Common stock dividends Payments of Ordinary Dividends, Common Stock Expiration Date Trading Arrangement Expiration Date Total Stockholders’ Equity Balance at the beginning Balance at the end Total Stockholders' Equity Equity, Including Portion Attributable to Noncontrolling Interest Buildings Building [Member] Contingent consideration liability Contingent Consideration Liability [Member] Contingent Consideration Liability Aggregate Pension Adjustments Service Cost Aggregate Pension Adjustments Service Cost [Member] Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table] Antidilutive Security, Excluded EPS Calculation [Table] Combined European Regulated Group Combined European Regulated Group [Member] Combined European regulated group. CASH FLOWS FROM INVESTING ACTIVITIES: Cash Provided by (Used in) Investing Activity, Including Discontinued Operation [Abstract] Related Party Transaction Related Party Transaction [Axis] Unrecognized compensation expense Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount Segments Segments [Domain] CASH AND CASH EQUIVALENTS AND RESTRICTED CASH— January 1 CASH AND CASH EQUIVALENTS AND RESTRICTED CASH—June 30 TOTAL CASH AND CASH EQUIVALENTS AND RESTRICTED CASH Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation LFI Consolidated Funds Temporary Equity, Consolidated Variable Interest Entities Amount of activity other than P&L in temp equity - consolidated VIEs SENIOR DEBT Debt Disclosure [Text Block] Scenario [Axis] Scenario [Axis] Unamortized Debt Costs Debt Issuance Costs, Net PEO Actually Paid Compensation Amount PEO Actually Paid Compensation Amount Total operating expenses Costs and Expenses Annual Interest Rate Debt Instrument, Interest Rate, Stated Percentage Total Lazard Stockholders’ Equity Total Lazard Stockholders’ Equity Equity, Attributable to Parent Customer and Other Receivables Customer And Other Receivables [Member] Customer and other receivables. ASSETS ASSETS Assets [Abstract] Professional services Professional Fees Customers and other Customers and other receivables Receivables From Customers And Other Receivables from customers related to collateralized lending activities, loans granted by bank to third party clients, managing directors, employees in the ordinary course of business, receivables from brokers-dealers and clearing organizations relating to unsettled securities transactions and receivables from related parties. Insider Trading Policies and Procedures [Line Items] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Deferred tax benefit Deferred Income Tax Expense (Benefit) Deposits with banks and short-term investments Deposits With Banks And Short Term Investments Represents deposits with banks and investments with a maturity of less than 90 days. Potentially dilutive shares excluded from calculation (in shares) Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount Number of business segments Number of Operating Segments Schedule Changes in Carrying Amount of Goodwill Goodwill [Table Text Block] Entity Central Index Key Entity Central Index Key Property, accumulated amortization and depreciation Less - Accumulated depreciation and amortization Property, Plant, and Equipment, Accumulated Depreciation, Depletion, and Amortization Additional paid-in-capital Additional Paid in Capital, Common Stock Equity [Abstract] Stockholders' Equity: Equity [Abstract] Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year Dividends or Other Earnings Paid on Equity Awards not Otherwise Reflected in Total Compensation for Covered Year [Member] Payments for: Payments For Financing Activities [Abstract] Payments for financing activities. Other Stockholders' Equity, Other Other comprehensive income (loss) before reclassifications, net of tax Other Comprehensive Income (Loss), before Reclassifications, Net of Tax Ownership Ownership [Axis] Amount Attributable to Noncontrolling Interests AOCI Attributable to Noncontrolling Interest [Member] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Axis] Schedule of Investments [Line Items] Schedule of Investments [Line Items] Management Fees Management Fees [Member] Management Fees Prepaid compensation asset, change in fair value of underlying investments Prepaid Compensation Asset Change In Fair value Prepaid asset, change in fair value of underlying investments Other Other Alternative Investments [Member] Other alternative investments. Expiration Share repurchase authorization, expiration date Share Repurchase Program, Expiration Date Accumulated Other Comprehensive Income (Loss), Net of Tax Total Lazard AOCI AOCI Attributable to Parent [Member] All Individuals All Individuals [Member] Corporate Corporate Segment [Member] Foreign currency translation and other adjustments Accounts Receivable, Allowance For Credit Loss, Foreign Currency Translation And Other Adjustments Accounts Receivable, Allowance For Credit Loss, Foreign Currency Translation And Other Adjustments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] Unrecognized compensation expense (in years) Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition Previously Reported Previously Reported [Member] Lease not yet commenced, term Lessee, Operating Lease, Lease Not yet Commenced, Term of Contract Statement [Line Items] Statement [Line Items] Total Assets Assets Defined Benefit Plan [Table] Defined Benefit Plan [Table] Private equity Private equity funds Private Equity Funds [Member] Interest expense Interest Expense, Operating Receivables and Allowance for Credit Losses Accounts Receivable [Policy Text Block] Industry Sector [Axis] Industry Sector [Axis] Interest expense Interest Expense, Nonoperating INCENTIVE PLANS Share-Based Payment Arrangement [Text Block] Occupancy and equipment Occupancy, Net PEO PEO [Member] Goodwill Beginning balance Ending balance Goodwill Retirement Plan Type Retirement Plan Type [Axis] Forgone Recovery due to Violation of Home Country Law, Amount Forgone Recovery due to Violation of Home Country Law, Amount RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH WITHIN THE CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION: Reconciliation Of Cash And Cash Equivalents And Restricted Cash Within Condensed Consolidated Statements Of Financial Condition [Abstract] Reconciliation of cash and cash equivalents and restricted cash within the condensed consolidated statements of financial condition. Sale and deconsolidation of business Noncontrolling Interest, Decrease from Deconsolidation Retained Earnings Retained Earnings [Member] Computer software Software, In-Development, Internally Developed, and Purchased [Member] Fair Value Measurements Fair Value Measurement, Policy [Policy Text Block] 2035 Notes Lazard Group Five Point Six Two Five Percent Senior Notes [Member] Lazard Group Five Point Six Two Five Percent Senior Notes Increase (Decrease) in Stockholders' Equity [Roll Forward] Increase (Decrease) in Stockholders' Equity [Roll Forward] Award Timing Disclosures [Line Items] Diluted (in USD per share) Earnings Per Share, Diluted Receivables (net of allowance for credit losses of $23,589 and $22,884 at June 30, 2026 and December 31, 2025, respectively): Accounts Receivable, after Allowance for Credit Loss [Abstract] Compensation liability, other Derivative Liability, Other Derivative liability, other Schedule Of Stockholders Equity [Table] Schedule Of Stockholders Equity [Table] Schedule Of Stockholders' Equity [Table] Asset management fees Asset Management [Member] Ownership Ownership [Domain] Share-Based Payment Arrangement [Abstract] Share-Based Payment Arrangement [Abstract] Revenue Net revenue Revenue from Contract with Customer, Excluding Assessed Tax Unused lines of credit Line of Credit Facility, Remaining Borrowing Capacity Schedule of Investments Investment [Table Text Block] Other U.S. and Non-U.S. Subsidiaries Other U S And Non U S Subsidiaries [Member] Other U.S. and non-U.S. subsidiaries. Adjustment for items reclassified to earnings (net of tax expense of $523 and $562 for the three months ended June 30, 2026 and 2025, respectively, and $1,047 and $1,092 for the six months ended June 30, 2026 and 2025, respectively) Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, after Tax Purchase of common stock Aggregate value of all shares repurchased Stock Repurchased During Period, Value Equity Awards Adjustments, Footnote Equity Awards Adjustments, Footnote [Text Block] Effect of Change in Accounting Principle Accounting Standards Update and Change in Accounting Principle [Table Text Block] Sales/ Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Sales Derivative liabilities, fair value, total Derivative Liability, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Construction in progress Construction in Progress [Member] TSR-PIPRs/ SP-PIPRs Total Shareholder Return PIPRs And/Or Stock Price PIPRs [Member] Total Shareholder Return PIPRs And/Or Stock Price PIPRs Net unrealized investment gains Net Unrealized Gains (Losses) On Investments In Equity Securities And Trading Debt Securities Amount of net unrealized gain (loss) on investments in equity securities and trading debt securities. Initial consideration Business Combination, Consideration Transferred, Initial Consideration Business Combination, Consideration Transferred, Initial Consideration Weighted average number of shares of common stock outstanding (in shares) Weighted Average Number Of Shares Outstanding Basic Before Adjustments Weighted average number of shares outstanding basic before adjustments. Total Derivative, Gain (Loss) on Derivative, Net OPERATING INCOME Operating Income (Loss) Revenue Recognition [Abstract] Revenue Recognition [Abstract] Related Party Transaction Related Party Transaction [Domain] Service period Deferred Compensation Arrangement with Individual, Maximum Contractual Term Prepaid compensation asset, settled Prepaid Compensation Asset Settled Prepaid compensation asset, settled. Rule 10b5-1 Arrangement Adopted Rule 10b5-1 Arrangement Adopted [Flag] Service cost Defined Benefit Plan, Service Cost Equity Equity Securities [Member] Second Amended and Restated Credit Agreement Second Amended And Restated Credit Agreement [Member] Second Amended And Restated Credit Agreement Cash tax saving that may arise from tax basis increases attributable to payments under the amended and restated tax receivable agreement (as a percent) Cash Tax Saving That May Arise From Tax Basis Increases Attributable To Payments Under Amended And Restated Tax Receivable Agreement Cash tax saving that may arise from tax basis increases attributable to payments under the amended and restated tax receivable agreement. Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items] O 2026 Q2 Dividends O 2026 Q2 Dividends [Member] O 2026 Q2 Dividends Common stock, shares issued (in shares) Balance at the beginning (in shares) Balance at the end (in shares) Common Stock, Shares, Issued Beginning Balance Ending Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset Value Prepaid compensation asset, granted Prepaid Compensation Asset Granted Prepaid compensation asset, granted. Product and Service Product and Service [Domain] Disaggregation Of Revenue [Table] Disaggregation of Revenue [Table] Common stock price, appreciation (as a percent) Common Stock Price, Appreciation Percentage Common Stock Price, Appreciation Percentage Variable Interest Entity [Line Items] Variable Interest Entity [Line Items] Daily Daily [Member] Daily. Deferred tax liabilities Deferred Income Tax Liabilities, Net Compensation Actually Paid vs. Other Measure Compensation Actually Paid vs. Other Measure [Text Block] Net gains (losses) on derivative instruments Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items] Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items] Marketing and business development Marketing and Advertising Expense Termination Date Trading Arrangement Termination Date Tax Receivable Agreement Tax Receivable Agreement [Member] Tax Receivable Agreement Amount of cash savings in income or franchise tax that would be realized as a result of increases in tax basis and certain other tax benefits related to the amended and restated tax receivable agreement (as a percent) Amount Of Cash Savings In Income Or Franchise Tax That Would Be Realized As Result Of Increases In Tax Basis And Certain Other Tax Benefits Related To Amended And Restated Tax Receivable Agreement Amount of cash savings in income or franchise tax that would be realized as a result of increases in tax basis and certain other tax benefits related to the amended and restated tax receivable agreement. Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Table] Fair Value, Recurring and Nonrecurring [Table] U.S. federal statutory income tax rate (as a percent) Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent Compensation Actually Paid vs. Total Shareholder Return Compensation Actually Paid vs. Total Shareholder Return [Text Block] Derivative assets, fair value, total Derivative Asset, Including Not Subject to Master Netting Arrangement, after Offset and Deduction Tax benefit on currency translation adjustments Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Tax Fair Value as of Grant Date Award Grant Date Fair Value Goodwill [Table] Goodwill [Table] Increase (Decrease) in Temporary Equity [Roll Forward] Increase (Decrease) in Temporary Equity [Roll Forward] Pay vs Performance Disclosure, Table Pay vs Performance [Table Text Block] Share repurchase remaining authorization Share Repurchase Program, Remaining Authorized, Amount Arrangement Duration Trading Arrangement Duration Entity Address, Postal Zip Code Entity Address, Postal Zip Code Entity Registrant Name Entity Registrant Name Other (in shares) Stockholders' Equity, Other Shares Insider Trading Policies and Procedures Not Adopted Insider Trading Policies and Procedures Not Adopted [Text Block] Intangible assets Intangible Asset, Finite-Lived, before Accumulated Amortization Total revenue Revenues NAV Alternative Investment Prepaid compensation asset, amortization and the impact of forfeitures Prepaid Compensation Assets Amortization, (Including Impact Of Forfeitures) Prepaid compensation assets amortization, net of forfeitures Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Other comprehensive income (loss) - net of tax Temporary Equity, Other Comprehensive Income (Loss), Net of Tax Temporary Equity, Other Comprehensive Income (Loss), Net of Tax Incentive Fees Incentive Fees [Member] Incentive Fees. Vesting period Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period Goodwill [Roll Forward] Goodwill [Roll Forward] Other Other Adjustments Other Adjustments Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block] Award Type [Domain] Award Type [Domain] 2028 Notes Lazard Group Four Point Five Zero Percent Senior Notes [Member] Lazard Group four point five zero percent senior notes. Level 3 Fair Value, Inputs, Level 3 [Member] Total Deferred Compensation Arrangement with Individual, Allocated Share-Based Compensation Expense Campbell Lutyens Campbell Lutyens [Member] Campbell Lutyens Asset Pledged as Collateral Asset Pledged as Collateral [Member] Investments, at fair value Investments Investments, Fair Value Disclosure, Excluding Equity Method Investments Investments fair value disclosure excluding equity method investments. Organization Organization Policy [Policy Text Block] Restricted cash Restricted Cash NAV Fair Value Measured at Net Asset Value Per Share [Member] Other assets Other assets Other Assets Legal Entity Legal Entity [Axis] Liability Class Liability Class [Axis] Regulatory capital Banking Regulation, Total Capital, Actual Prepaid compensation asset, other Prepaid Compensation Asset, Other Prepaid compensation asset, other Schedule of Adjustments for Items Reclassified From AOCI Reclassification out of Accumulated Other Comprehensive Income [Table Text Block] Non-NEOs Non-NEOs [Member] Investment Advisor Investment Advisor [Member] Investment Advisor Amortization and the impact of forfeitures Amortization Of Awarded Grants Net Of Forfeitures Amortization of awarded grants, net of forfeitures. Award payout, cap percentage if TSR is negative Share-Based Compensation Arrangement by Share-Based Payment Award, Award Payout, Cap Percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Payout, Cap Percentage Schedule of Senior Debt Schedule of Debt [Table Text Block] Equity, Class of Treasury Stock [Line Items] Equity, Class of Treasury Stock [Line Items] Purchase of common stock Payments for Repurchase of Common Stock U.K. Subsidiaries United Kingdom Subsidiary [Member] United Kingdom subsidiary. Deposits and other customer payables Deposits and other customer payables Deposits And Other Customer Payables Deposits and other customer payables principally related to customer-related interest-bearing time and demand deposits, short-term inter-bank borrowing with registered banks, amounts due on collateralized borrowing activities and other related party payables. Statistical Measurement Statistical Measurement [Axis] Termination fee Business Combination, Termination Fee Business Combination, Termination Fee Award Type [Axis] Award Type [Axis] Named Executive Officers, Footnote Named Executive Officers, Footnote [Text Block] Retained earnings Retained Earnings (Accumulated Deficit) Product and Service Product and Service [Axis] Awards Close in Time to MNPI Disclosures Awards Close in Time to MNPI Disclosures [Table] Pension Plans Pension Plan [Member] Common Stock Common Stock [Member] Reclassification Out Of Accumulated Other Comprehensive Income [Table] Reclassification out of Accumulated Other Comprehensive Income [Table] Derivative Contract Derivative Contract [Domain] Foreign currency translation adjustments Goodwill, Foreign Currency Translation, Gain (Loss) Schedule Of Regulatory Authorities [Table] Schedule Of Regulatory Authorities [Table] Schedule of regulatory authorities. 2031 Notes Lazard Group Six Percent Senior Notes [Member] Lazard Group Six Percent Senior Notes Total Liabilities, Redeemable Noncontrolling Interests and Stockholders’ Equity Liabilities and Equity Goodwill and other intangible assets (net of accumulated amortization of $67,711 at December 31, 2025) Goodwill and other intangible assets (net of accumulated amortization) Intangible Asset, Including Goodwill, after Accumulated Amortization Employee Stock Option Share-Based Payment Arrangement, Option [Member] Ordinary PIPRs Ordinary PIPRs [Member] Ordinary PIPRs Purchases/ Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases Dividend payable date Dividends Payable, Date to be Paid Noncontrolling interests Equity, Attributable to Noncontrolling Interest Segments Segments [Axis] Additional 402(v) Disclosure Additional 402(v) Disclosure [Text Block] Related Party Related and Nonrelated Parties [Domain] Tabular List, Table Tabular List [Table Text Block] Vesting [Axis] Vesting [Axis] Schedule of Equity Securities and Trading Debt Securities Net Unrealized Investment Gains and Losses Unrealized Gain (Loss) on Investments [Table Text Block] Name Awards Close in Time to MNPI Disclosures, Individual Name Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested Year-end Fair Value of Equity Awards Granted in Covered Year that are Outstanding and Unvested [Member] Long-Lived Asset, Class Long-Lived Asset, Class [Domain] Fair Value by Liability Class Fair Value by Liability Class [Domain] REGULATORY AUTHORITIES Regulatory Authorities [Text Block] The entire disclosure for regulatory transactions. Property, Plant, and Equipment [Table] Property, Plant, and Equipment [Table] Preferred stock, par value $0.01 per share; 15,000,000 shares authorized; no shares issued and outstanding at June 30, 2026 and December 31, 2025 Preferred Stock, Value, Issued Adjustment to Compensation: Adjustment to Compensation [Axis] Adjustments for items reclassified to earnings, net of tax Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax Rule 10b5-1 Arrangement Terminated Rule 10b5-1 Arrangement Terminated [Flag] Aggregate Erroneous Compensation Amount Aggregate Erroneous Compensation Amount Currency Translation Adjustments Accumulated Foreign Currency Adjustment Including Portion Attributable to Noncontrolling Interest [Member] Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits [Line Items] Deferred Compensation Arrangement with Individual, Excluding Share-Based Payments and Postretirement Benefits [Line Items] Credit Facility Credit Facility [Axis] Assets, fair value disclosure Assets, Fair Value Disclosure Name Measure Name Pay vs Performance Disclosure [Line Items] Fair Value Hierarchy and NAV Fair Value Hierarchy and NAV [Domain] Debt Instrument [Line Items] Debt Instrument [Line Items] Amortization of prepaid compensation asset with clawback Cash Retention Awards Amortization Cash Retention Awards Amortization Additional Paid-In- Capital Additional Paid-in Capital [Member] Restricted cash Restricted Cash, Fair Value Disclosure Restricted Cash, Fair Value Disclosure Redemption Notice Period Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Investment Redemption, Notice Period Name Trading Arrangement, Individual Name Cash and cash equivalents Cash and cash equivalents Cash and cash equivalents Cash and Cash Equivalent Dividend declare date Dividends Payable, Date Declared Company Selected Measure Amount Company Selected Measure Amount Depreciation and amortization of property Depreciation, Depletion and Amortization Unused Lines of Credit Unused lines of Credit [Member] Delivery of common stock in connection with share-based incentive compensation and related tax expense (benefit) (in shares) Shares Issued, Shares, Share-Based Payment Arrangement, after Forfeiture Accounts and Financing Receivables [Table] Accounts and Financing Receivables [Table] Non-PEO NEO Non-PEO NEO [Member] Redeemable Noncontrolling Interests Redeemable Noncontrolling Interest [Member] Redeemable noncontrolling interest. Award Timing Method Award Timing Method [Text Block] Other Product and Service, Other [Member] NET DECREASE IN CASH AND CASH EQUIVALENTS AND RESTRICTED CASH Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Period Increase (Decrease), Including Exchange Rate Effect and Discontinued Operation Forecast Forecast [Member] Forgone Recovery, Explanation of Impracticability Forgone Recovery, Explanation of Impracticability [Text Block] Award vesting, number of tranches Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting, Number Of Tranche Share-Based Compensation Arrangement By Share-Based Payment Award, Award Vesting, Number Of Tranche Derivative liabilities, notional Derivative Liability, Notional Amount Net actuarial loss Defined Benefit Plan, Amortization of Gain (Loss) Vesting Three Share-Based Payment Arrangement, Tranche Three [Member] NET INCOME ATTRIBUTABLE TO LAZARD Net income attributable to Lazard Net Income (Loss) Attributable to Parent Erroneous Compensation Analysis Erroneous Compensation Analysis [Text Block] Proceeds from sale of property Proceeds from Sale of Property, Plant, and Equipment Restatement Determination Date: Restatement Determination Date [Axis] Alternative investments Alternative Investments [Member] Alternative investments. Schedule of Accumulated Other Comprehensive Income (Loss), Net of Tax Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] LTBP Trust Ltbp Trust [Member] LTBP Trust. Receivables-net Increase (Decrease) in Receivables Earnout consideration Business Combination, Consideration Transferred, Earnout Consideration Business Combination, Consideration Transferred, Earnout Consideration Pension Benefits Adjustments, Footnote Pension Benefits Adjustments, Footnote [Text Block] WEIGHTED AVERAGE SHARES OF COMMON STOCK OUTSTANDING: Weighted Average Number of Shares Outstanding, Diluted [Abstract] Weighted average number of shares of common stock issuable on a non-contingent basis (in shares) Weighted Average Number Of Basic Shares Outstanding Adjustment The sum of the potential common shares or units used in the calculation of the basic per-share or per unit computation. Statistical Measurement Statistical Measurement [Domain] Document Fiscal Year Focus Document Fiscal Year Focus Expenses related to the pending acquisition of Campbell Lutyens Holdings Limited ("Campbell Lutyens") Business Combination, Acquisition-Related Cost, Expense Units Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward] Par value $0.01 per share (500,000,000 shares authorized; 110,548,172 and 111,728,757 shares issued at June 30, 2026 and December 31, 2025, respectively, including shares held in treasury) Common Stock, Value, Issued Settlement of share-based incentive compensation in satisfaction of tax withholding requirements Payment, Tax Withholding, Share-Based Payment Arrangement Restatement Determination Date Restatement Determination Date Expected return on plan assets Defined Benefit Plan, Expected Return (Loss) on Plan Assets Deferred consideration Business Combination, Consideration Transferred, Deferred Consideration Business Combination, Consideration Transferred, Deferred Consideration Adjustment for earnings attributable to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Basic Allowance for doubtful accounts receivables Beginning Balance Ending Balance Accounts Receivable, Allowance for Credit Loss Amendment Flag Amendment Flag Goodwill [Line Items] Goodwill [Line Items] Provision for credit losses, net of reversals Accounts Receivable, Credit Loss Expense (Reversal) Contributions from (distributions to) noncontrolling interests, net Noncontrolling Interest, Contributions From (Distributions To) Noncontrolling Interest Holders Noncontrolling Interest, Contributions From (Distributions To) Noncontrolling Interest Holders Common stock price, appreciation period Common Stock Price, Appreciation Period Common Stock Price, Appreciation Period INVESTMENTS Investment [Text Block] Investments Investments [Domain] Maturity Date Debt Instrument, Maturity Date Adjustment to Non-PEO NEO Compensation Footnote Adjustment to Non-PEO NEO Compensation Footnote [Text Block] Property, Plant, and Equipment [Abstract] Property, Plant, and Equipment [Abstract] Entity Address, State or Province Entity Address, State or Province PEO Total Compensation Amount PEO Total Compensation Amount Currency translation adjustments (net of tax benefit of $597 and $603 for the three months and six months ended June 30, 2026, respectively) Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Accrued compensation and benefits and other liabilities Increase (Decrease) in Accrued Liabilities and Other Operating Liabilities Schedule Of Stockholders Equity [Line Items] Schedule Of Stockholders Equity [Line Items] Schedule of stockholders equity. Share Repurchase Program Share Repurchase Program [Domain] Basic (in shares) Weighted average number of shares of common stock outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Purchase and consolidation of business Temporary Equity, Business Combination Temporary Equity, Business Combination Prepaid Compensation Asset Related to Cash Retention Awards Prepaid Compensation Asset Related To Cash Retention Awards [Member] Prepaid Compensation Asset Related To Cash Retention Awards Investment Redemption Frequency Investment Redemption Frequency [Domain] Investment redemption frequency. Retained investment, fair value Equity Method Investments, Fair Value Disclosure Tax expense (benefit) on actuarial gain (loss), employee benefit plans Other Comprehensive Income (Loss), Defined Benefit Plan, Gain (Loss) Arising During Period, Tax Defined Benefit Plan Disclosure [Line Items] Defined Benefit Plan Disclosure [Line Items] RECEIVABLES AND ALLOWANCE FOR CREDIT LOSSES Loans, Notes, Trade and Other Receivables Disclosure [Text Block] Document Information [Line Items] Document Information [Line Items] Award Timing MNPI Disclosure Award Timing MNPI Disclosure [Text Block] Units settled (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period Class of Stock Class of Stock [Axis] Basis of Presentation Basis of Accounting, Policy [Policy Text Block] Tracy Farr [Member] Tracy Farr Net income attributable to Lazard - basic Net Income (Loss) Available to Common Stockholders, Basic Employer Contributions to Pension Plans Pension and Other Postretirement Plans, Pensions, Policy [Policy Text Block] Amortization of deferred expenses and share-based incentive compensation Amortization Of Deferred Expenses And Share-Based Payment Arrangement, Expense Amortization Of Deferred Expenses And Share-Based Payment Arrangement, Expense Other intangible assets, accumulated amortization Intangible Asset, Finite-Lived, Accumulated Amortization Senior revolving credit facility Line of Credit Facility, Maximum Borrowing Capacity Customer loans Customer Loans Customer loans are related to collateralized lending activities, loans granted by bank to third parties. and clearing organization relating to unsettled securities transactions Recent Accounting Developments New Accounting Pronouncements, Policy [Policy Text Block] New Accounting Pronouncements or Change in Accounting Principle [Line Items] New Accounting Pronouncements or Change in Accounting Principle [Line Items] Noncontrolling Interests Noncontrolling Interest [Member] Adjustments: Segment Reporting, Reconciliation [Abstract] Senior debt Carrying Value Long-Term Debt PROPERTY, NET Property, Plant, and Equipment [Text Block] Adjusted Compensation and Benefits Expense Compensation And Benefits Expense, Adjusted Compensation And Benefits Expense, Adjusted Investment Redemption Frequency Investment Redemption Frequency [Axis] Investment redemption frequency. Hedge funds Hedge Funds [Member] (Increase) decrease in operating assets and increase (decrease) in operating liabilities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Increase (Decrease) in Operating Capital [Abstract] Net cash used in investing activities Cash Provided by (Used in) Investing Activity, Including Discontinued Operation Equity Awards Adjustments, Excluding Value Reported in Compensation Table Equity Awards Adjustments, Excluding Value Reported in the Compensation Table [Member] STOCKHOLDERS’ EQUITY AND REDEEMABLE NONCONTROLLING INTERESTS Equity [Text Block] Asset Management Asset Management Segment [Member] Asset management segment. OPERATING EXPENSES Costs and Expenses [Abstract] Name of each exchange on which registered Security Exchange Name Award payout percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Payout, Percentage Share-Based Compensation Arrangement by Share-Based Payment Award, Award Payout, Percentage Change in the fair value of underlying investments Compensation Expense Related To Change In Fair Value Of Underlying Investments Compensation expense related to the change in fair value of the underlying investments. Organization And Basis Of Presentation [Line Items] Organization And Basis Of Presentation [Line Items] Organization and basis of presentation. Total of liabilities measured at fair value Liabilities, Fair Value Disclosure Number of shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized Schedule of Components of Property Property, Plant, and Equipment [Table Text Block] Statement of Comprehensive Income [Abstract] Statement of Comprehensive Income [Abstract] Schedule of Changes in Fair Value of Company's Level 3 Assets and Liabilities Fair Value Assets And Liabilities Measured On Recurring Basis Unobservable Input Reconciliation [Table Text Block] Tabular disclosure of fair value assets and liabilities measured on recurring basis unobservable input reconciliation. Name Outstanding Recovery, Individual Name Award Timing, How MNPI Considered Award Timing, How MNPI Considered [Text Block] Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year Prior Year End Fair Value of Equity Awards Granted in Any Prior Year that Fail to Meet Applicable Vesting Conditions During Covered Year [Member] Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Schedule Of Investments [Table] Schedule of Investments [Table] Dividend date of record Dividends Payable, Date of Record Sale and deconsolidation of business, net of cash proceeds Proceeds from Divestiture of Businesses, Net of Cash Divested Percentage of common membership interests held (as a percent) Subsidiary, Ownership Percentage, Parent Principal Long-Term Debt, Gross Debt Debt Securities [Member] Related Party Transactions [Abstract] Related Party Transactions [Abstract] LFNY Lazard Freres And Company Limited Liability Company [Member] Lazard Freres and company limited liability company. Compensation Amount Outstanding Recovery Compensation Amount Individual: Individual [Axis] Diluted (in shares) Weighted average number of shares of common stock outstanding - diluted (in shares) Weighted Average Number of Shares Outstanding, Diluted Accounts, Notes, Loans and Financing Receivable [Line Items] Accounts, Notes, Loans and Financing Receivable [Line Items] Disaggregation Of Revenue [Line Items] Disaggregation of Revenue [Line Items] Entity Emerging Growth Company Entity Emerging Growth Company Related Party Transaction [Line Items] Related Party Transaction [Line Items] Derivatives Derivatives, Policy [Policy Text Block] Underlying Security Market Price Change Underlying Security Market Price Change, Percent DERIVATIVES Derivative Instruments and Hedging Activities Disclosure [Text Block] Derivative liabilities, fair value Derivative Liability, Subject to Master Netting Arrangement, before Offset Common Stock Held In Treasury Treasury Stock, Common [Member] Intangible Asset, Goodwill and Other [Abstract] Intangible Asset, Goodwill and Other [Abstract] Expenses associated with senior management transition Severance Costs Securities sold, not yet purchased Financial Instruments Sold, Not yet Purchased, at Fair Value Organization, Consolidation and Presentation of Financial Statements [Abstract] Organization, Consolidation and Presentation of Financial Statements [Abstract] Derivative assets, notional amount Derivative Asset, Notional Amount TSR-PIPRs Total Shareholder Return PIPRs [Member] Total Shareholder Return PIPRs Weighted average grant date fair value, beginning balance (in USD per share) Weighted average grant date fair value, ending balance (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value Derivative assets, net derivatives Derivative Fair Value Of Derivative Asset Amount After Offset Against Counterparty And Cash Collateral Netting Derivative Fair Value Of Derivative Asset Amount After Offset Against Counterparty And Cash Collateral Netting All Executive Categories All Executive Categories [Member] Schedule of LFI and Other Similar Deferred Compensation Arrangements Schedule of Deferred Compensation Arrangement with Individual, Share-Based Payments [Table Text Block] Pension Adjustments Service Cost Pension Adjustments Service Cost [Member] Schedule of of Net Periodic Benefit Cost Schedule of Net Benefit Costs [Table Text Block] Redeemable noncontrolling interests Redeemable Noncontrolling Interest, Equity, Carrying Amount Dividend equivalents Dividend, Share-Based Payment Arrangement, Shares Employee benefit plans: Other Comprehensive (Income) Loss, Defined Benefit Plan, after Reclassification Adjustment, after Tax [Abstract] Accounting Changes and Error Corrections [Abstract] Schedule of Company's Basic and Diluted Net Income Per Share and Weighted Average Shares Outstanding Schedule of Earnings Per Share, Basic and Diluted [Table Text Block] Effect of Change Revision of Prior Period, Change in Accounting Principle, Adjustment [Member] Debt Disclosure [Abstract] Debt Disclosure [Abstract] SEGMENT INFORMATION Segment Reporting [Text Block] Minimum Minimum [Member] Investment Type Investment Type [Axis] Compensation liability, settled Derivative Liability Settled Derivative liability settled. Private equity funds Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table] Schedule of Revenue Based on Business Segment Results Disaggregation of Revenue [Table Text Block] CONSOLIDATED VIEs Variable Interest Entity Disclosure [Text Block] Liabilities: LIABILITIES Liabilities [Abstract] Organization And Basis Of Presentation [Table] Organization And Basis Of Presentation [Table] Organization and basis of presentation. Non-Rule 10b5-1 Arrangement Adopted Non-Rule 10b5-1 Arrangement Adopted [Flag] Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table Aggregate Grant Date Fair Value of Equity Award Amounts Reported in Summary Compensation Table [Member] Fair Value Assets Measured On Recurring Basis Unobservable Input Reconciliation [Line Items] Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] Other liabilities Other liabilities Other Liabilities Common stock: Common Stock, Number of Shares, Par Value and Other Disclosure [Abstract] Common stock dividends Dividends, Common Stock Net periodic benefit cost Defined Benefit Plan, Net Periodic Benefit Cost (Credit) Operating income related to noncontrolling interests and similar arrangements Operating Income (Loss) Attributable To Noncontrolling Interest And Similar Arrangements Operating Income (Loss) Attributable To Noncontrolling Interest And Similar Arrangements Debt Fixed Income Funds [Member] Common stock, shares authorized (in shares) Common Stock, Shares Authorized Intangible assets, useful life Intangible Asset, Finite-Lived, Useful Life Accumulated Other Comprehensive Income (Loss) [Line Items] Accumulated Other Comprehensive Income (Loss) [Line Items] Exercise Price Award Exercise Price Fair Value, Measurements, Recurring Fair Value, Recurring [Member] Segment Reporting [Line Items] Segment Reporting [Line Items] Repurchase Authorization Total shares authorized to be repurchased Share Repurchase Program, Authorized, Amount Document Quarterly Report Document Quarterly Report Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested Year-over-Year Change in Fair Value of Equity Awards Granted in Prior Years That are Outstanding and Unvested [Member] EFFECT OF EXCHANGE RATE CHANGES ON CASH AND CASH EQUIVALENTS AND RESTRICTED CASH Effect of Exchange Rate on Cash, Cash Equivalent, Restricted Cash, and Restricted Cash Equivalent, Including Discontinued Operation Receivables Accounts Receivable, after Allowance for Credit Loss Restricted Cash and Cash Equivalents [Axis] Restricted Cash and Cash Equivalents [Axis] Awards Close in Time to MNPI Disclosures, Table Awards Close in Time to MNPI Disclosures [Table Text Block] Equity method investments Equity Method Investments Equity Component Equity Component [Domain] Net Unrealized Gains/Losses Included In Earnings Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) Included in Earnings Adoption Date Trading Arrangement Adoption Date 2029 Notes Lazard Group Four Point Three Seven Five Percent Senior Notes [Member] Lazard group four point three seven five percent senior notes. Scenario, Plan Scenario, Plan [Member] Schedule Of Deferred Compensation Arrangement With Individual Excluding Share Based Payments And Postretirement Benefits By Title Of Individual And By Type Of Deferred Compensation [Table] Deferred Compensation Arrangement with Individual, Excluding Share-Based Payment and Postretirement Benefit [Table] Title Trading Arrangement, Individual Title Forgone Recovery due to Disqualification of Tax Benefits, Amount Forgone Recovery due to Disqualification of Tax Benefits, Amount Restatement does not require Recovery Restatement Does Not Require Recovery [Text Block] Operating lease liabilities Operating Lease, Liability Interest income Interest income (included in net revenue) Interest Income, Operating Insider Trading Policies and Procedures Adopted Insider Trading Policies and Procedures Adopted [Flag] Derivative Instruments, Gain (Loss) [Line Items] Derivative Instruments, Gain (Loss) [Line Items] Regulatory Requirements [Line Items] Regulatory Requirements [Line Items] Regulatory requirements. Business Combination [Domain] Business Combination [Domain] Proceeds from (payments for) customer loans, net Proceeds From (Payments For) Customer Loans, Net Proceeds From (Payments For) Customer Loans, Net COMMITMENTS AND CONTINGENCIES Commitments and Contingencies Disclosure [Text Block] Compensation Actually Paid vs. Net Income Compensation Actually Paid vs. Net Income [Text Block] RSUs Restricted Stock Units (RSUs) [Member] Components of Net Periodic Benefit Cost: Defined Benefit Plan, Net Periodic Benefit Cost (Credit) [Abstract] All Adjustments to Compensation All Adjustments to Compensation [Member] Other adjustments Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity, Other Item Business Combination [Axis] Business Combination [Axis] Net cash used in operating activities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Income Statement [Abstract] Income Statement [Abstract] STOCKHOLDERS’ EQUITY Equity, Attributable to Parent [Abstract] Document Transition Report Document Transition Report Deferred tax assets Deferred Income Tax Assets, Net Stock Appreciation Rights (SARs) Stock Appreciation Rights (SARs) [Member] City Area Code City Area Code Document Information [Table] Document Information [Table] Noncash lease expense Operating Lease, Right-of-Use Asset, Periodic Reduction Related tax expense (benefit) of share-based incentive compensation on delivery of common stock Tax Expense (Benefit) From Stock Issued In Connection With Share-based Incentive Compensation Tax expense (benefit) from stock issued in connection with share-based incentive compensation. Name Forgone Recovery, Individual Name Equity growth Equity Growth [Member] Equity growth. Non-GAAP Measure Description Non-GAAP Measure Description [Text Block] Weighted Average Grant Date Fair Value Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract] Entity Entity [Domain] Compensation liability, change in fair value of underlying investments Derivative Liability Change In Fair Value Derivative liability, change in fair value of underlying investments Preferred stock, shares issued (in shares) Preferred Stock, Shares Issued Prior service cost Defined Benefit Plan, Amortization of Prior Service Cost (Credit) Adjustment for earnings attributable to participating securities Participating Securities, Distributed and Undistributed Earnings (Loss), Diluted Other assets Increase (Decrease) in Other Operating Assets Cash and Cash Equivalents [Domain] Cash and Cash Equivalents [Domain] Share-based incentive awards Share-Based Payment Arrangement, Expense Purchase and cancellation of common stock (in shares) Stock Repurchased and Retired During Period, Shares Amortization of: Amortization [Abstract] Number of additional shares authorized (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized Purchase and consolidation of business Goodwill, Acquired During Period Investments (including $33,770 and $48,966 pledged at June 30, 2026 and December 31, 2025, respectively) Investments Investments Investments Weighted average grant date fair value, granted (in USD per share) Weighted average grant date fair value, granted (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value Revenue included in deferred revenue balance Contract with Customer, Liability, Revenue Recognized Subsequent Event Type Subsequent Event Type [Domain] Revision of Prior Period [Domain] Revision of Prior Period [Domain] Weighted average grant date fair value, forfeited (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value Investment Company [Abstract] Erroneously Awarded Compensation Recovery Erroneously Awarded Compensation Recovery [Table] Accumulated Other Comprehensive Income Loss [Table] Accumulated Other Comprehensive Income (Loss) [Table] Entity Current Reporting Status Entity Current Reporting Status Net cash used in financing activities Cash Provided by (Used in) Financing Activity, Including Discontinued Operation Derivative assets, collateral not netted on the condensed consolidated statement of financial condition Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash/Security Not Offset Derivative Asset, Security Purchased under Agreement to Resell, and Security Borrowed, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash/Security Not Offset Total Shareholder Return Amount Total Shareholder Return Amount Adjustments to reconcile net income to net cash provided by (used in) operating activities: Adjustment to Reconcile Net Income to Cash Provided by (Used in) Operating Activity [Abstract] Charge-offs Accounts Receivable, Allowance for Credit Loss, Writeoff CASH FLOWS FROM FINANCING ACTIVITIES: Cash Provided by (Used in) Financing Activity, Including Discontinued Operation [Abstract] Property (net of accumulated amortization and depreciation of $291,341 and $286,235 at June 30, 2026 and December 31, 2025, respectively) Property, net Property, Plant, and Equipment, after Accumulated Depreciation, Depletion, and Amortization Interest cost Defined Benefit Plan, Interest Cost Financial Instruments Financial Instruments [Domain] Derivative assets Derivative Asset Other Other Income GOODWILL AND OTHER INTANGIBLE ASSETS Intangible Asset and Goodwill [Text Block] Underlying Securities Award Underlying Securities Amount LESS - COMPREHENSIVE INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest REVENUE RECOGNITION Revenue from Contract with Customer [Text Block] Fair Values Derivatives Balance Sheet Location By Derivative Contract Type By Hedging Designation [Table] Fair Values Derivatives, Balance Sheet Location, by Derivative Contract Type [Table] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Derivative Asset, Statement of Financial Position [Extensible Enumeration] Other investing activities Payment for (Proceeds from) Other Investing Activity Schedule Of Segment Reporting Information By Segment [Table] Segment Reporting [Table] Common stock conversion basis Common Stock, Conversion Basis Net income (loss) Temporary Equity, Net Income Related Party Transaction [Table] Related Party Transaction [Table] Commitments and Contingencies Disclosure [Abstract] Commitments and Contingencies Disclosure [Abstract] All Trading Arrangements All Trading Arrangements [Member] Beginning Balance Ending Balance Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability Value Other Performance Measure, Amount Other Performance Measure, Amount Award Timing MNPI Considered Award Timing MNPI Considered [Flag] Current Fiscal Year End Date Current Fiscal Year End Date Common stock price, number of consecutive days Common Stock Price, Threshold Consecutive Days, Number Common Stock Price, Threshold Consecutive Days, Number Non-PEO NEO Average Total Compensation Amount Non-PEO NEO Average Total Compensation Amount Technology and information services Communications and Information Technology Purchase of common stock (in shares) Number of shares purchased (in shares) Stock Repurchased During Period, Shares Undiscounted future lease payments Unrecorded Unconditional Purchase Obligation Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year Change in Fair Value as of Vesting Date of Prior Year Equity Awards Vested in Covered Year [Member] Deposits with banks and short-term investments Deposits With Banks And Short-Term Investments, Fair Value Disclosure Deposits With Banks And Short-Term Investments, Fair Value Disclosure Common stock dividends (in USD per share) Common Stock, Dividends, Per Share, Declared Entity File Number Entity File Number Delivery of common stock in connection with share-based incentive compensation and related tax expense (benefit) Shares Issued, Value, Share-Based Payment Arrangement, after Forfeiture Recovery of Erroneously Awarded Compensation Disclosure [Line Items] Measure: Measure [Axis] Schedule of Consolidated VIE Assets and Liabilities Schedule of Variable Interest Entities [Table Text Block] Stockholders' equity subtotal before common stock held in treasury and noncontrolling interests Stockholders Equity Before Common Stock Held In Treasury And Noncontrolling Interests Stockholders Equity Before Common Stock Held In Treasury And Noncontrolling Interests Common stock held in treasury (in shares) Balance at the beginning (in shares) Balance at the end (in shares) Treasury Stock, Common, Shares Investments Increase (Decrease) in Financial Instruments Used in Operating Activities Equity Components Equity Components [Axis] Entity Interactive Data Current Entity Interactive Data Current LESS - NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS Net Income (Loss) Attributable to Noncontrolling Interest Entity Small Business Entity Small Business COMPREHENSIVE INCOME ATTRIBUTABLE TO LAZARD Comprehensive Income (Loss), Net of Tax, Attributable to Parent Tax expense, adjustment for items reclassified to earnings, employee benefit plans Other Comprehensive (Income) Loss, Defined Benefit Plan, Reclassification Adjustment from AOCI, Tax Withholding taxes in lieu of share delivery (in shares) Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation Compensation liability, amortization and the impact of forfeitures Derivative Liability Amortization Including Impact Of Forfeitures Derivative Liability Amortization Including Impact Of Forfeitures Property, Plant, and Equipment [Line Items] Property, Plant, and Equipment [Line Items] Schedule of Fair Value of Certain Investments Based on NAV Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table Text Block] MNPI Disclosure Timed for Compensation Value MNPI Disclosure Timed for Compensation Value [Flag] Document Type Document Type Purchase and consolidation of business, net of cash acquired Payments to Acquire Businesses, Net of Cash Acquired Fair Value, Assets and Liabilities Measured on Recurring Basis [Line Items] Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] Statement of Stockholders' Equity [Abstract] Condensed Consolidated Statements of Changes in Stockholders' Equity and Redeemable Noncontrolling Interests Statement of Stockholders' Equity [Abstract] Local Phone Number Local Phone Number Pledged Status [Domain] Pledged Status [Domain] Commitments and contingencies Commitments and Contingencies Line of credit, expiration date Line of Credit Facility, Expiration Date Antidilutive Securities, Name [Domain] Antidilutive Securities, Name [Domain] Property, plant and equipment, gross Property, Plant, and Equipment, before Accumulated Depreciation, Depletion, and Amortization Changed Peer Group, Footnote Changed Peer Group, Footnote [Text Block] Reclassification out of Accumulated Other Comprehensive Income [Axis] Reclassification out of Accumulated Other Comprehensive Income [Axis] Accounting Standards Update and Change in Accounting Principle [Table] Accounting Standards Update and Change in Accounting Principle [Table] Executive Category: Executive Category [Axis] Net revenue Net Revenue (Loss) Revenues, Net of Interest Expense LIABILITIES, REDEEMABLE NONCONTROLLING INTERESTS AND STOCKHOLDERS’ EQUITY Liabilities and Equity [Abstract] Non-PEO NEO Average Compensation Actually Paid Amount Non-PEO NEO Average Compensation Actually Paid Amount Schedule Of Variable Interest Entities [Table] Variable Interest Entity [Table] Fund administration and outsourced services Fund Administration And Outsourced Services Expense Expenses relating to fund administration and outsourced services and include such expenses as mutual fund service fees, outsourced fees and custody fees. PEO Name PEO Name Leasehold improvements Leasehold Improvements [Member] Peter R. Orszag [Member] Peter R. Orszag Other Segment Items Segment Reporting, Other Segment Item, Amount Long-Lived Asset, Class Long-Lived Asset, Class [Axis] Stock Price or TSR Estimation Method Stock Price or TSR Estimation Method [Text Block] Entity Tax Identification Number Entity Tax Identification Number Accounts Receivable, Allowance for Credit Loss [Roll Forward] Accounts Receivable, Allowance for Credit Loss [Roll Forward] Aggregate indebtedness to net capital ratio Ratio of Indebtedness to Net Capital Adjusted Operating Income (Loss) Adjusted Operating Income Operating Income (Loss), Adjusted Operating Income (Loss), Adjusted Delivery of common stock associated with stock awards (in shares) Restricted Stock, Shares Issued Net of Shares for Tax Withholdings REVENUE Revenues, Net of Interest Expense [Abstract] Net income attributable to Lazard per share of common stock: Earnings Per Share Of Common Stock Basic And Diluted [Abstract] Earnings Per Share Of Common Stock Basic And Diluted [Abstract] Revenue Recognition Revenue [Policy Text Block] Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Aggregate Erroneous Compensation Not Yet Determined Aggregate Erroneous Compensation Not Yet Determined [Text Block] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Purchases/ Issuances Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Purchases Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year Vesting Date Fair Value of Equity Awards Granted and Vested in Covered Year [Member] ORGANIZATION AND BASIS OF PRESENTATION Organization, Consolidation and Presentation of Financial Statements Disclosure [Text Block] COMPREHENSIVE INCOME Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest Debt Instrument Debt Instrument [Axis] Measurement Frequency Measurement Frequency [Domain] PIPRs Profits Interest Participation Rights [Member] profits interest participation rights. Depreciation and amortization of property (included in adjusted non-compensation expense) Depreciation And Amortization, Adjusted Depreciation And Amortization, Adjusted Compensation and benefits Labor and Related Expense Financing receivables Financing Fee Receivable Financing fee receivables represent those receivables that are paid on an installment basis and may or may not include an interest component Schedule of Fair Values of Derivatives Reported on Condensed Consolidated Statements of Financial Condition Schedule of Derivative Instruments in Statement of Financial Position, Fair Value [Table Text Block] Basic (in USD per share) Earnings Per Share, Basic Deferred revenue Deferred Revenue Insider Trading Arrangements [Line Items] Tax receivable agreement obligation Payments For Tax Receivable Agreement Obligation Amount of cash outflow made in accordance with the tax receivable agreement obligation. Net income Profit Loss Excluding Redeemable Noncontrolling Interests Profit loss excluding redeemable noncontrolling interests. Contributions from (distributions to) noncontrolling interests, net Temporary Equity, Contributions From (Distributions To) Noncontrolling Interest Holders Temporary Equity, Contributions From (Distributions To) Noncontrolling Interest Holders Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table Aggregate Change in Present Value of Accumulated Benefit for All Pension Plans Reported in Summary Compensation Table [Member] Balance at the beginning Balance at the end Temporary Equity, Including Noncontrolling Interest Contingent consideration liability Business Combination, Contingent Consideration, Liability Derivative liabilities, net derivatives Derivative Fair Value Of Derivative Liability Amount After Offset Against Counterparty And Cash Collateral Netting Derivative Fair Value Of Derivative Liability Amount After Offset Against Counterparty And Cash Collateral Netting Lazard Group LLC Lazard Group Llc [Member] Lazard Group LLC. Compensation Actually Paid vs. Company Selected Measure Compensation Actually Paid vs. Company Selected Measure [Text Block] Cover [Abstract] Cover [Abstract] Investment banking and other advisory fees Financial Advisory Fees [Member] Firm providing financial advisory services regarding mergers and acquisitions, capital advisory, restructurings etc. Number of dividend participation rights issued (in shares) Issuance Of Restricted Stock Units And Restricted Stock In Connection With Dividend Participation Rights Issuance of restricted stock units and restricted stock in connection with dividend participation rights. Investment, Type [Extensible Enumeration] Investment, Type [Extensible Enumeration] Regulatory capital in excess of minimum requirement Banking Regulation, Total Risk-Based Capital, Excess, Actual Equity Awards Adjustments Equity Awards Adjustments [Member] Schedule of Share Repurchase Authorized by Board of Directors Schedule Of Share Repurchases Authorized By Board Of Directors Table [Table Text Block] Tabular disclosure of the share repurchases authorized by board of directors. Industry Sector [Domain] Industry Sector [Domain] Plan Name Plan Name [Axis] Total funds Funds [Member] Funds. Schedule of Impact of Share-Based Incentive Plans on Compensation and Benefits Expense Share-Based Payment Arrangement, Cost by Plan [Table Text Block] Total Lazard Stockholders’ Equity Parent [Member] Fees Fees receivable Accrued Fees and Other Revenue Receivable Share-Based Awards and Deferred Compensation Arrangement with Service Condition Share-Based Awards And Deferred Compensation Arrangement With Service Condition [Member] Share-Based Awards And Deferred Compensation Arrangement With Service Condition Units forfeited (in shares) Units forfeited (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Forfeited in Period Financial Advisory Financial Advisory Segment [Member] Financial advisory segment. Fair value not redeemable (as percent) Percentage Of NAV Investments Not Redeemable Percentage of NAV investments not redeemable. Preferred stock shares authorized (in shares) Preferred Stock, Shares Authorized Derivatives, Fair Value [Line Items] Derivatives, Fair Value [Line Items] Share Repurchase Program Share Repurchase Program [Axis] Class of Stock Class of Stock [Domain] Foreign Currency Translation Adjustments Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Foreign Currency Translation Adjustments Amount of foreign currency translation adjustments of financial instrument classified as liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. Statement of Cash Flows [Abstract] Statement of Cash Flows [Abstract] Sales/ Settlements Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Liability, Sales Forward foreign currency exchange rate contracts Foreign Exchange Forward [Member] Purchase and consolidation of business Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Aggregate Available Trading Arrangement, Securities Aggregate Available Amount INCOME TAXES Income Tax Disclosure [Text Block] Pay vs Performance Disclosure Pay vs Performance Disclosure [Table] Retirement Plan Type Retirement Plan Type [Domain] Entity Filer Category Entity Filer Category Dividends [Axis] Dividends [Axis] Revision of Prior Period [Axis] Revision of Prior Period [Axis] Proceeds from: Proceeds From Financing Activities [Abstract] Proceeds from financing activities. Investments, Debt and Equity Securities [Abstract] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] Fair Value, Asset, Recurring Basis, Unobservable Input Reconciliation, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration] NET INCOME NET INCOME Net income Net income Net Income (Loss), Including Portion Attributable to Noncontrolling Interest Schedule of Shares Repurchased Under the Share Repurchase Program Schedule Of Shares Repurchased Under Share Repurchase Program Table [Table Text Block] Tabular disclosure of shares repurchased during the period under the share repurchased program. Derivative liabilities Beginning balance, derivative liability Ending balance, derivative liability Derivative Liability Entity Address, Address Line One Entity Address, Address Line One Weighted average grant date fair value, settled (in USD per share) Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value SP-PIPRs Stock Price PIPRs [Member] Stock Price PIPRs Provision for income taxes Provision for income taxes Income Tax Expense (Benefit) Other financing activities Payments For Other Financing Activities The cash outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. Equity Equity Funds [Member] Consolidation Consolidation, Policy [Policy Text Block] Prepaid Compensation Asset - LFI Prepaid compensation asset Beginning balance, prepaid compensation asset Ending balance, prepaid compensation asset Prepaid Compensation Asset Balance represents the fair value of the compensation award, adjusted for amounts granted, amortization, forfeited, translation and other adjustments. Consolidated VIEs Variable Interest Entity, Primary Beneficiary [Member] RECENT ACCOUNTING DEVELOPMENTS Accounting Standards Update and Change in Accounting Principle [Text Block] Statement [Table] Statement [Table] Vesting Two Share-Based Payment Arrangement, Tranche Two [Member] Derivative assets, fair value Derivative Asset, Subject to Master Netting Arrangement, before Offset Derivative Instruments and Hedging Activities Disclosure [Abstract] Derivative Instruments and Hedging Activities Disclosure [Abstract]