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Obligations - 2027 and 2024 Senior Convertible Notes, and Related Note Hedge and Warrant Transactions (Details)
$ / shares in Units, shares in Millions
3 Months Ended 6 Months Ended 12 Months Ended
May 27, 2022
USD ($)
day
$ / shares
May 25, 2022
USD ($)
$ / shares
shares
Jun. 03, 2019
USD ($)
$ / shares
Jun. 30, 2022
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
Jun. 30, 2022
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2021
USD ($)
May 31, 2019
$ / shares
shares
Debt Instrument [Line Items]                    
Purchase of convertible bond hedge $ 3,800,000         $ 80,500,000 $ 0      
Anti-dilution adjustments of common stock (in shares) | shares   5.9               4.9
Initial strike price (in USD per share) | $ / shares   $ 106.37   $ 109.43   $ 109.43       $ 109.43
Proceeds from issuance of warrants   $ 43,700,000       $ 43,700,000 0      
Proceeds from and payment for convertible bond hedge 8,000,000 $ 36,800,000                
Repurchase of common stock           74,445,000 11,141,000      
Proceeds from hedge unwind 11,900,000         11,851,000 0      
Loss on extinguishment of long-term debt       $ 11,190,000 $ 0 11,190,000 $ 0      
Convertible Notes 2024                    
Debt Instrument [Line Items]                    
Repurchase amount 273,800,000                  
Convertible Debt                    
Debt Instrument [Line Items]                    
Deferred financing cost       10,926,000   10,926,000        
Principal       586,174,000   586,174,000        
Convertible Debt | Convertible Notes 2027                    
Debt Instrument [Line Items]                    
Aggregate principal amount $ 460,000,000                  
Debt instrument interest rate, stated percentage 3.50%                  
Transaction fees and offering expenses $ 450,000,000                  
Initial conversion rate 0.0129041                  
Initial conversion price (in USD per share) | $ / shares $ 77.49                  
Redemption price percentage 100.00%                  
Multiple of principle amount available for conversion $ 1,000                  
Convertible note hedge (in shares) | shares   5.9                
Purchase of convertible bond hedge   $ 80,500,000                
Effective interest rate percentage 4.02%                  
Deferred financing cost $ 10,000,000     9,817,000   9,817,000        
Principal       $ 460,000,000   $ 460,000,000     $ 0  
Convertible Debt | Convertible Notes 2027 | Conversion Circumstance One                    
Debt Instrument [Line Items]                    
Threshold percentage of stock price trigger (in percent) 130.00%                  
Threshold trading days | day 20                  
Consecutive trading days | day 30                  
Redemption price percentage 100.00%                  
Convertible Debt | Convertible Notes 2027 | Conversion Circumstance Two                    
Debt Instrument [Line Items]                    
Consecutive trading days | day 10                  
Number of trading days | day 45                  
Convertible Debt | Convertible Notes 2027 | Conversion Circumstance Three                    
Debt Instrument [Line Items]                    
Percentage of per common share value 10.00%                  
Convertible Debt | Convertible Notes 2027 | Conversion Circumstance Four                    
Debt Instrument [Line Items]                    
Consecutive trading days | day 5                  
Redemption price percentage 98.00%                  
Convertible Debt | Convertible Notes 2024                    
Debt Instrument [Line Items]                    
Aggregate principal amount     $ 400,000,000              
Debt instrument interest rate, stated percentage     2.00%              
Transaction fees and offering expenses     $ 391,600,000              
Initial conversion rate     0.0123018              
Initial conversion price (in USD per share) | $ / shares     $ 81.29              
Convertible note hedge (in shares) | shares                   4.9
Effective interest rate percentage       2.46%   2.46%        
Deferred financing cost $ 1,200,000     $ 1,109,000   $ 1,109,000     4,368,000  
Debt conversion converted instrument amount               $ 1,000    
Principal       $ 126,174,000   $ 126,174,000     $ 400,000,000  
Convertible Debt | 2024 Note Hedge Transaction                    
Debt Instrument [Line Items]                    
Convertible note hedge (in shares) | shares       1.6   1.6        
Convertible Debt | 2024 Warrant Transactions                    
Debt Instrument [Line Items]                    
Convertible note hedge (in shares) | shares       1.6   1.6