Variable Interest Entities - Consolidated VIEs (Details) - USD ($)	Jan. 15, 2021	Dec. 31, 2022	Mar. 31, 2022
Variable Interest Entity [Line Items]
Total VIE Assets		$ 1,124,361,000	$ 1,294,946,000
Total liabilities of consolidated VIEs		594,403,000	557,460,000
Remaining unfunded commitments from the limited partners and general partners to the unconsolidated VIE		140,691,000
Hamilton Lane Alliance Holdings I, Inc.
Variable Interest Entity [Line Items]
Proceeds from offering	$ 276,000,000
Primary Beneficiary
Variable Interest Entity [Line Items]
Total liabilities of consolidated VIEs		0	0
Primary Beneficiary | Investments
Variable Interest Entity [Line Items]
Total VIE Assets		$ 41,498,000	$ 10,036,000
Hamilton Lane Advisors, L.L.C. | Hamilton Lane Alliance Holdings I, Inc.
Variable Interest Entity [Line Items]
Proceeds from offering	$ 7,520,000