v3.26.3
Summary of Significant Accounting Policies - Capitalized Software-as-a-Service Costs (Details) - Capitalized computer software as service - USD ($)
$ in Millions
3 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Jun. 30, 2026
Property and equipment, net      
Capitalized software written down $ 0.0 $ 0.0  
Instructional costs and services      
Property and equipment, net      
Amortization expense 2.3 2.3  
Selling, general and administrative expenses      
Property and equipment, net      
Amortization expense 3.1 $ 4.4  
Prepaid expenses      
Property and equipment, net      
Capitalized software, net 16.9   $ 18.0
Deposits and other assets      
Property and equipment, net      
Capitalized software, net $ 28.1   $ 28.1
Minimum      
Property and equipment, net      
Capitalized software as service useful life 3 years    
Maximum      
Property and equipment, net      
Capitalized software as service useful life 5 years