v3.26.1
Investments - Narrative (Details)
$ in Thousands
12 Months Ended
Mar. 31, 2026
USD ($)
fund
Mar. 31, 2025
USD ($)
Product Information [Line Items]    
Accrued carried interest-related compensation $ 1,100,604 $ 757,968
Legacy Greenspring investments in funds and accrued carried interest allocations [1] $ 752,776 629,228
Number of investment funds consolidated | fund 4  
Non-Controlling Interests in Legacy Greenspring Entities    
Product Information [Line Items]    
Non-controlling interests [1] $ 133,590 133,489
Affiliated Entity    
Product Information [Line Items]    
Accrued carried interest-related compensation 1,100,600 758,000
Legacy Greenspring investments in funds and accrued carried interest allocations $ 619,200 $ 495,700
StepStone Funds    
Product Information [Line Items]    
Typical maximum equity interest held per fund 1.00%  
Revenue Benchmark | Separately Managed Account Concentration Risk | One Investments    
Product Information [Line Items]    
Equity method investment, total accrued carried interest allocation percentage 12.00% 15.00%
Revenue Benchmark | Comingled Funds Concentration Risk | Three Investments    
Product Information [Line Items]    
Equity method investment, total accrued carried interest allocation percentage 57.00% 47.00%
[1] Reflects amounts attributable to consolidated VIEs for which the Company did not acquire any direct economic interests. See notes 2 and 5 for more information.