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Subsequent Events (Details) - USD ($)
9 Months Ended
Apr. 21, 2020
Aug. 24, 2018
Mar. 29, 2020
Mar. 31, 2019
Jun. 30, 2019
Subsequent Event [Line Items]          
Proceeds from long-term debt borrowings     $ 0 $ 95,000,000.0  
Repayments of long-term debt     400,000 $ 387,000,000.0  
Convertible Notes due September 1, 2023 | Convertible Notes          
Subsequent Event [Line Items]          
Aggregate principal amount   $ 500,000,000.0      
Stated interest rate (as a percent)   0.875%      
Conversion rate (shares)   16.6745      
Carrying amount of debt instrument     $ 486,300,000   $ 469,100,000
Subsequent Event          
Subsequent Event [Line Items]          
Proceeds from long-term debt borrowings $ 561,400,000        
Repayments of long-term debt 144,300,000        
Subsequent Event | Convertible Notes due May 1, 2026 | Convertible Notes          
Subsequent Event [Line Items]          
Aggregate principal amount $ 500,000,000.0        
Stated interest rate (as a percent) 1.75%        
Conversion rate (shares) 21.1346        
Subsequent Event | Convertible Notes due May 1, 2026 | Convertible Notes | Over-Allotment Option          
Subsequent Event [Line Items]          
Aggregate principal amount $ 75,000,000.0        
Subsequent Event | Convertible Notes due September 1, 2023 | Convertible Notes          
Subsequent Event [Line Items]          
Carrying amount of debt instrument 150,200,000        
Accrued interest $ 200,000