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Investments - Narrative (Details) - USD ($) $ in Thousands		Jun. 30, 2024	Mar. 31, 2024
Product Information [Line Items]
Accrued carried interest-related compensation		$ 652,123	$ 719,497
Legacy Greenspring investments in funds and accrued carried interest allocations	[1]	617,539	631,197
Non-Controlling Interests in Legacy Greenspring Entities
Product Information [Line Items]
Non-controlling interests	[1]	147,536	147,042
Equity Method Investments
Product Information [Line Items]
Accrued carried interest-related compensation		652,100	719,500
Legacy Greenspring investments in funds and accrued carried interest allocations		$ 470,000	$ 484,200
Revenue Benchmark | Separately Managed Account Concentration Risk | One Investment
Product Information [Line Items]
Equity method investment, total accrued carried interest allocation percentage		15.00%
Revenue Benchmark | Separately Managed Account Concentration Risk | Two Investments
Product Information [Line Items]
Equity method investment, total accrued carried interest allocation percentage			26.00%
Revenue Benchmark | Comingled Funds Concentration Risk | Two Investments
Product Information [Line Items]
Equity method investment, total accrued carried interest allocation percentage		37.00%
Revenue Benchmark | Comingled Funds Concentration Risk | Three Investments
Product Information [Line Items]
Equity method investment, total accrued carried interest allocation percentage			36.00%
[1] Reflects amounts attributable to consolidated VIEs for which the Company did not acquire any direct economic interests. See note 5 for more information.

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