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DEBT - Convertible Senior Notes due in 2025 Narrative (Details)
 2 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Mar. 01, 2021
USD ($)
shares
Mar. 09, 2020
USD ($)
tradingDay
$ / shares
shares
May 19, 2020
tradingDay
shares
Jun. 30, 2022
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
shares
Mar. 31, 2021
USD ($)
shares
Jun. 30, 2022
USD ($)
$ / shares
shares
Jun. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
$ / shares
shares
May 20, 2020
USD ($)
$ / shares
shares
Debt Instrument [Line Items]                    
Principal amount outstanding       $ 1,286,215,000     $ 1,286,215,000   $ 1,037,646,000  
Common stock, par value (in usd per share) | $ / shares       $ 0.00001     $ 0.00001   $ 0.00001 $ 0.00001
Common stock, shares authorized (in shares) | shares     150,000,000 300,000,000     300,000,000   300,000,000 200,000,000
Deferred taxes       $ 174,307,000     $ 174,307,000   $ 122,470,000  
Partial repurchase of convertible notes             0 $ 289,312,000    
Loss on partial settlement of convertible notes       0 $ 13,000   0 56,382,000    
Debt, current       $ 88,429,000     88,429,000   86,052,000  
Payment for bonds hedge             0 286,235,000    
Proceeds from sale of warrants             $ 0 220,800,000    
Warrants obligations measured at fair value                   $ 96,400,000
Convertible Notes                    
Debt Instrument [Line Items]                    
Convertible notes embedded derivative                   117,100,000
Convertible Notes | Notes due 2025                    
Debt Instrument [Line Items]                    
Debt instrument face amount   $ 320,000,000                
Interest rate   0.25%   1.00%     1.00%      
Conversion ratio   0.0122637                
Debt conversion price (in USD per share) | $ / shares   $ 81.54                
Proceeds from convertible debt   $ 313,000,000                
Number of consecutive trading days | tradingDay     20              
Principal amount outstanding       $ 88,429,000     $ 88,429,000   86,052,000  
Convertible notes embedded derivative   68,700,000               116,300,000
Embedded derivative, host contract   $ 251,300,000                
Deferred taxes                   200,000
Debt issuance costs                   $ 7,600,000
Partial repurchase of convertible notes           $ 217,700,000        
Exercise of warrants related to convertible senior notes (in shares) | shares 1,670,000       485          
Equity component of convertible senior notes, net $ 302,700,000       $ 100,000          
Convertible note, liability component 184,500,000                  
Residual conversion price $ 4,300,000                  
Induced conversion of convertible debt expense               37,500,000    
Remaining expected life 4 years 1 month 6 days                  
Write off of debt discount $ 38,500,000                  
Write off of deferred debt issuance cost $ 4,100,000                  
Loss on partial settlement of convertible notes               $ 9,400,000    
Conversion of debt         $ 100,000          
Debt, current       $ 102,200,000     $ 102,200,000      
Effective percentage rate       5.18%     5.18%      
Unamortized discount       $ 12,447,000     $ 12,447,000   $ 14,584,000  
Remaining discount amortization period             270.00%      
Conversion shares (in shares) | shares   3,900,000                
Payment for bonds hedge   $ 89,100,000                
Warrants issued, strike price (in USD per share) | $ / shares   $ 106.94                
Proceeds from sale of warrants   $ 71,600,000                
Convertible notes hedge settlements, shares received (in shares) | shares           1,900,000        
Warrants unwound, shares issued (in shares) | shares           1,800,000        
Convertible notes hedge transaction, options outstanding (in shares) | shares       1,300,000     1,300,000      
Warrants outstanding (in shares) | shares       1,300,000     1,300,000      
Convertible Notes | Notes due 2025 | Discount rate                    
Debt Instrument [Line Items]                    
Measurement input 0.0435                  
Period One | Convertible Notes | Notes due 2025                    
Debt Instrument [Line Items]                    
Number of threshold trading days | tradingDay   20                
Number of consecutive trading days | tradingDay   30                
Threshold percentage   130.00%                
Stock trigger price (in USD per share) | $ / shares             $ 106.00   $ 106.00  
Period Two | Convertible Notes | Notes due 2025                    
Debt Instrument [Line Items]                    
Number of consecutive trading days | tradingDay   5                
Threshold percentage   100.00%                
Business day period after measurement period   5 days                
Measurement period percentage of stock price trigger   98.00%