Annual report [Section 13 and 15(d), not S-K Item 405]

Stock-Based Compensation Plans (Narrative) (Details)

v3.25.2
Stock-Based Compensation Plans (Narrative) (Details) - USD ($)
shares in Millions, $ in Millions
12 Months Ended
May 31, 2025
May 31, 2024
May 31, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares authorized for grant 46.5    
Shares available for future grants 12.0    
Stock-based compensation expense $ 111.8 $ 61.1 $ 62.6
Income tax benefits related to stock-based compensation 17.7 12.7 12.1
Total unrecognized compensation cost related to all unvested stock-based awards $ 136.2    
Weighted-average period in years of all unvested stock-based awards 2 years 4 months 24 days    
Paycor HCM, Inc [Member] | Replacement Awards [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total unrecognized compensation cost related to all unvested stock-based awards $ 42.5    
Weighted-average period in years of all unvested stock-based awards 1 year 10 months 24 days    
Fair value of replacement awards $ 105.2    
Paycor HCM, Inc [Member] | Replacement Awards [Member] | Pre-Combination Expense [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of replacement awards 15.9    
Paycor HCM, Inc [Member] | Replacement Awards [Member] | Post-Combination Expense [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of replacement awards 89.3    
Paycor HCM, Inc [Member] | Replacement Awards [Member] | Acceleration of Awards Expense [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Fair value of replacement awards $ 39.1    
Minimum [Member] | Paycor HCM, Inc [Member] | RSUs or RSAs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Acquisition cost ratio 0.15%    
Maximum [Member] | Paycor HCM, Inc [Member] | RSUs or RSAs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Acquisition cost ratio 1.00%    
Non-Executive [Member] | Minimum [Member] | Time-Based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 4 years    
Non-Executive [Member] | Maximum [Member] | Time-Based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 5 years    
Executive [Member] | Time-Based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 3 years    
Outside Directors [Member] | Time-Based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 1 year    
Tranche One [Member] | Executive [Member] | Time-Based RSUs [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting percentage 33.30%    
Employee Stock Purchase Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock-based compensation expense $ 0.0 $ 0.0 $ 0.0
Discount to the market price 5.00% 5.00% 5.00%
Employee Stock Purchase Plan [Member] | Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Discount to the market price 15.00%