v3.26.1
Investments - Narrative (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Jun. 30, 2026
USD ($)
fund
Mar. 31, 2026
USD ($)
Product Information [Line Items]    
Accrued carried interest-related compensation $ 1,145,080 $ 1,100,604
Legacy Greenspring investments in funds and accrued carried interest allocations [1] $ 783,847 752,776
Number of consolidated investment funds | fund 6  
Non-Controlling Interests in Legacy Greenspring Entities    
Product Information [Line Items]    
Non-controlling interests [1] $ 127,812 133,590
Affiliated Entity    
Product Information [Line Items]    
Accrued carried interest-related compensation 1,145,100 1,100,600
Legacy Greenspring investments in funds and accrued carried interest allocations $ 656,000 $ 619,200
StepStone Funds    
Product Information [Line Items]    
Typical maximum equity interest held per fund 1.00%  
One Investment | Revenue Benchmark | Separately Managed Account Concentration Risk    
Product Information [Line Items]    
Equity method investment, total accrued carried interest allocation percentage   12.00%
Two Investments | Revenue Benchmark | Separately Managed Account Concentration Risk    
Product Information [Line Items]    
Equity method investment, total accrued carried interest allocation percentage 25.00%  
Three Investments | Revenue Benchmark | Comingled Funds Concentration Risk    
Product Information [Line Items]    
Equity method investment, total accrued carried interest allocation percentage 60.00% 57.00%
[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.