v3.26.1
Fee Revenue - Additional Information (Details) - USD ($)
$ in Millions
 12 Months Ended
Apr. 30, 2026
Apr. 30, 2025
Apr. 30, 2024
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]      
Contract liabilities, revenue recognized $ 188.3 $ 184.9 $ 195.2
Revenue recognized, remaining performance obligation 1,287.7    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2026-05-01      
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]      
Revenue recognized, remaining performance obligation $ 610.7    
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2027-05-01      
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]      
Revenue recognized, remaining performance obligation $ 394.0    
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2028-05-01      
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]      
Revenue recognized, remaining performance obligation $ 149.5    
Revenue, remaining performance obligation, expected timing of satisfaction, period 1 year    
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date: 2029-05-01      
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction [Line Items]      
Revenue recognized, remaining performance obligation $ 133.5    
Revenue, remaining performance obligation, expected timing of satisfaction, period