v3.26.1
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)
$ in Millions
12 Months Ended
Jun. 30, 2026
USD ($)
Segment
Jun. 30, 2025
USD ($)
Jun. 30, 2024
USD ($)
Jun. 30, 2023
USD ($)
Property, Plant, and Equipment [Line Items]        
Number of reportable segments | Segment 2      
Investment securities maturity period for consideration as cash equivalents, in days 90 days      
Inventory $ 35.1 $ 32.1    
Prepaid expense $ 158.4 132.0    
Percentage of coins locked 70.00%      
Stockholders' equity $ 2,840.5 2,655.1 $ 2,168.2 $ 2,240.6
Retained Earnings        
Property, Plant, and Equipment [Line Items]        
Stockholders' equity $ 4,553.6 3,862.5 $ 3,435.1 $ 3,113.0
Cumulative Effect, Period of Adoption, Adjustment        
Property, Plant, and Equipment [Line Items]        
Stockholders' equity [1]   18.4    
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings        
Property, Plant, and Equipment [Line Items]        
Cumulative effect of changes in accounting principle   24.5    
Stockholders' equity [1]   $ 18.4    
Minimum | Internal use software        
Property, Plant, and Equipment [Line Items]        
Estimated useful lives of assets 3 years      
Maximum | Internal use software        
Property, Plant, and Equipment [Line Items]        
Estimated useful lives of assets 5 years      
Internal use software | Maximum        
Property, Plant, and Equipment [Line Items]        
Estimated useful lives of assets 5 years      
Largest Customer | Customer Concentration Risk | Revenue Benchmark        
Property, Plant, and Equipment [Line Items]        
Percentage of consolidated revenues 7.00% 7.00% 8.00%  
[1] Reflects the adoption of accounting standard (ASU No. 2023-08) as described in Note 2, “Summary of Significant Accounting Policies.