XML 76 R65.htm IDEA: XBRL DOCUMENT v3.19.1
Debt - Additional Information (Details) - USD ($)
1 Months Ended 9 Months Ended
Oct. 10, 2018
Aug. 15, 2018
May 29, 2018
Mar. 03, 2017
Mar. 22, 2018
Mar. 30, 2019
Mar. 31, 2018
Jun. 30, 2018
Mar. 22, 2017
Debt details                  
Repayments of convertible debt           $ 276,900,000 $ 198,000,000    
1.75% Senior Convertible Notes | Convertible Notes                  
Debt details                  
Aggregate principal amount of convertible debt     $ 225,000,000.0            
Interest rate on senior convertible notes     1.75%     1.75%      
Proceeds from convertible debt     $ 69,500,000            
Effective discount rate     5.30%            
Derivative, term of contract     5 years            
Expected remaining term           4 years 2 months      
Proceeds from debt, net of issuance costs     $ 67,300,000            
Fair market value of convertible debt           $ 249,000,000   $ 232,400,000  
Notes outstanding           $ 225,000,000   225,000,000  
0.625% Senior Convertible Notes | Convertible Notes                  
Debt details                  
Interest rate on senior convertible notes           0.625%      
Fair market value of convertible debt               281,000,000  
Debt redemption $ 142,700,000                
Repayments of convertible debt   $ 134,300,000              
Notes outstanding           $ 0   277,000,000  
1.00% Senior Convertible Notes | Convertible Notes                  
Debt details                  
Aggregate principal amount of convertible debt       $ 400,000,000.0         $ 60,000,000
Interest rate on senior convertible notes           1.00%      
Effective discount rate       4.80%          
Derivative, term of contract       7 years          
Expected remaining term           4 years 11 months      
Proceeds from debt, net of issuance costs         $ 451,100,000        
Fair market value of convertible debt           $ 518,000,000   465,300,000  
Notes outstanding           $ 460,000,000   $ 460,000,000  
2033 Notes Redeemed By Holders | Convertible Notes                  
Debt details                  
Debt redemption 112,000,000                
Repayments of convertible debt $ 111,800,000                
Shares issued in debt conversion (in shares) 231,795                
2033 Notes Redeemed By The Company | Convertible Notes                  
Debt details                  
Debt redemption $ 30,700,000                
Repayments of convertible debt $ 30,800,000                
Exchange Transaction | 1.75% Senior Convertible Notes | Convertible Notes                  
Debt details                  
Debt issued     155,500,000            
Exchange Transaction | 0.625% Senior Convertible Notes | Convertible Notes                  
Debt details                  
Repayments of debt     $ 151,500,000