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Stock Incentive Plans - Narrative (Details) - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2020
Oct. 23, 2019
Omnibus Stock Incentive Plan 2016        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Aggregate number of shares authorized for issuance under stock incentive plan       23,800,000
Number of shares available for future issuance 8,400,000      
Stock Appreciation Rights (SARs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation expense $ 37.0 $ 35.0 $ 26.0  
Expense for nonvested awards not yet recognized $ 15.0      
Expense for nonvested awards not yet recognized, weighted-average period for recognition 13 months      
Total fair value of shares vested $ 29.0 25.0 27.0  
Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Stock-based compensation expense $ 26.0 26.0 26.0  
Expense for nonvested awards not yet recognized $ 19.0      
Expense for nonvested awards not yet recognized, weighted-average period for recognition 22 months      
Total fair value of shares vested $ 26.0 21.0 23.0  
Share based payment arrangement, tax benefit (cost) $ 4.0 1.0 1.0  
Long Term Incentive Plans        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Stock-based compensation expense $ 72.0 59.0 58.0  
Share based payment arrangement, tax benefit (cost) $ 5.0 2.0 (1.0)  
Minimum | Stock Appreciation Rights (SARs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 1 year      
Maximum | Stock Appreciation Rights (SARs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 3 years      
Expiration period 10 years      
Director | Restricted Stock Units (RSUs)        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period 1 year      
Stock-based compensation expense $ 1.8 1.5 1.4  
Expense for nonvested awards not yet recognized $ 0.6      
Expense for nonvested awards not yet recognized, weighted-average period for recognition 4 months      
Share based payment arrangement, tax benefit (cost) $ 0.2 $ 2.1 $ 0.1