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Investments - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Product Information [Line Items] |  |  |
Accrued carried interest-related compensation |  | $ 719,497 | $ 644,517
Legacy Greenspring investments in funds and accrued carried interest allocations | [1] | 631,197 | 770,652
Non-Controlling Interests in Legacy Greenspring Entities |  |  |
Product Information [Line Items] |  |  |
Non-controlling interests | [1] | 147,042 | 152,658
Affiliated Entity |  |  |
Product Information [Line Items] |  |  |
Accrued carried interest-related compensation |  | 719,500 | 644,500
Legacy Greenspring investments in funds and accrued carried interest allocations |  | $ 484,200 | $ 618,000
StepStone Funds |  |  |
Product Information [Line Items] |  |  |
Typical maximum equity interest held per fund |  | 1.00% |
Revenue Benchmark | Separately Managed Account Concentration Risk | Two Investments |  |  |
Product Information [Line Items] |  |  |
Equity method investment, total accrued carried interest allocation percentage |  | 26.00% | 24.00%
Revenue Benchmark | Comingled Funds Concentration Risk | Two Investments |  |  |
Product Information [Line Items] |  |  |
Equity method investment, total accrued carried interest allocation percentage |  |  | 24.00%
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 notes 5 and 15 for more information.

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