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Non-PEO NEO [Member] Employee Share Purchase Plan share issuance Stock Issued During Period, Value, Employee Stock Purchase Plan Hamilton Lane Advisors, L.L.C. 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Repurchased During Period, Shares Outstanding Class B and C units of HLA Class B and Class C Units of Hamilton Lane Advisors, L.L.C. 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Precedent Transactions Weighted average shares (in shares) Weighted-average shares of Class A common stock outstanding - basic (in shares) Weighted Average Number of Shares Outstanding, Basic Net Income Investment Income, Net [Abstract] Due from related parties Increase (Decrease) in Due from Related Parties Supplemental Cash Flow Cash Flow, Supplemental Disclosures [Text Block] Warrant liability Warrants and Rights Outstanding Related Party Transaction [Domain] Related Party Transaction [Domain] Subsequent Events [Abstract] Subsequent Events [Abstract] Debt Disclosure [Abstract] Debt Disclosure [Abstract] Secondary funds Secondary Funds [Member] Secondary Funds [Member] Forgone Recovery due to Expense of Enforcement, Amount Forgone Recovery due to Expense of Enforcement, Amount Share-based Compensation Arrangement by Share-based Payment Award [Line Items] Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] Common stock, par value (in dollars per share) Common Stock, Par or Stated Value Per Share Consolidated Entities [Axis] Consolidated Entities [Axis] Specialized funds Incentive Fee Revenue, Specialized Funds [Member] Incentive Fee Revenue, Specialized Funds [Member] Restricted stock granted (in shares) Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross Effect of Cross-Border Tax Laws Effective Income Tax Rate Reconciliation, Cross-Border Tax Effect, Amount Use of Estimates Use of Estimates, Policy [Policy Text Block] Dividends paid Payments of Dividends Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Table] Subsequent Event Subsequent Events [Text Block] Foreign currency translation Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Adjustment, Net of Tax Insider Trading Arrangements [Line Items] Sales / return of capital Equity Securities without Readily Determinable Fair Value, Return of Capital Equity Securities without Readily Determinable Fair Value, Return of Capital Establishment of payable to related parties pursuant to tax receivable agreement Establishment Of Payable To Related Parties Pursuant To Tax Receivable Agreement Establishment Of Payable To Related Parties Pursuant To Tax Receivable Agreement 2020 Multi-Draw Facility 2020 Multi-Draw Facility [Member] 2020 Multi-Draw Facility Investment income Investment Income, Interest and Dividend Consolidated Funds and Partnerships Consolidated Funds and Partnerships [Member] Consolidated Funds and Partnerships Total liabilities Liabilities Product Concentration Risk Product Concentration Risk [Member] Net investment income Investment Income, Net Members’ distributions paid Distributions in excess of required tax distributions to members Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid Pension Adjustments Prior Service Cost Pension Adjustments Prior Service Cost [Member] Material Terms of Trading Arrangement Material Terms of Trading Arrangement [Text Block] Award vesting condition, annual growth rate Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Condition, Annual Growth Rate Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Condition, Annual Growth Rate Counterparty Name [Axis] Counterparty Name [Axis] Distribution Type [Domain] Distribution Type [Domain] Net income Net Income (Loss), Including Portion Attributable to Nonredeemable Noncontrolling Interest Entity Incorporation, State or Country Code Entity Incorporation, State or Country Code Non-NEOs Non-NEOs [Member]