v3.26.1
Share-based Compensation and Other Benefit Plans (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2024
Jun. 30, 2010
Oct. 31, 2020
Oct. 30, 2014
Share-based Compensation and Other Benefit Plans            
Shares of common stock subject to outstanding awards 8,100,000          
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value (in dollars per share) $ 19.16 $ 24.75 $ 27.27      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 40.7 $ 36.9 $ 100.8      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercised in Period, Fair Value 127.6 50.7 58.2      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested in Period, Fair Value 42.0 36.4 31.6      
Unrecognized compensation cost $ 32.1          
Unrecognized compensation cost, period for recognition (Year) 1 year 10 months 24 days          
US Profit Sharing and Savings Plan            
Share-based Compensation and Other Benefit Plans            
Defined Contribution Plan, Cost $ 6.0 6.3 5.8      
GB Profit Sharing and Savings Plan            
Share-based Compensation and Other Benefit Plans            
Defined Contribution Plan, Cost 6.9 5.6 5.5      
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold            
Share-based Compensation and Other Benefit Plans            
Stock-based compensation expense 1.6 1.3 0.9      
Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense            
Share-based Compensation and Other Benefit Plans            
Stock-based compensation expense $ 40.2 40.0 38.5      
Employee Stock Option            
Share-based Compensation and Other Benefit Plans            
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 4 years          
Restricted Stock            
Share-based Compensation and Other Benefit Plans            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 1.1 2.0 2.4      
Restricted Stock Units (RSUs)            
Share-based Compensation and Other Benefit Plans            
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value $ 18.1 10.6 9.9      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period (Year) 3 years          
The 2020 Equity Incentive Plan            
Share-based Compensation and Other Benefit Plans            
Number of shares authorized (in shares)       36,200,000 9,936,808  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant (in shares) 5,900,000          
The 2020 Equity Incentive Plan | Maximum            
Share-based Compensation and Other Benefit Plans            
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period (Year)       10 years    
Employee Stock Purchase Plan 2014            
Share-based Compensation and Other Benefit Plans            
Number of shares authorized (in shares)           800,000
Stock-based compensation expense $ 0.9 0.8 0.9      
Performance Incentive Programs            
Share-based Compensation and Other Benefit Plans            
Salary and Wage, Officer, Excluding Cost of Good and Service Sold $ 25.6 $ 32.8 $ 13.5      
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures, Total (in shares) 988,321 912,717 1,060,126      
Performance Incentive Programs | Restricted Stock            
Share-based Compensation and Other Benefit Plans            
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares) 13,120 12,736 27,876      
Performance Incentive Programs | Restricted Stock Units (RSUs)            
Share-based Compensation and Other Benefit Plans            
Stock Issued During Period, Shares, Restricted Stock Award, Gross (in shares) 589,402 547,369 374,448