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DEBT - Convertible Senior Notes due in 2025 Narrative (Details)
 2 Months Ended 3 Months Ended 9 Months Ended 12 Months Ended
Mar. 01, 2021
USD ($)
shares
Mar. 09, 2020
USD ($)
tradingDay
$ / shares
shares
May 19, 2020
tradingDay
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
Jun. 30, 2021
USD ($)
shares
Mar. 31, 2021
USD ($)
shares
Sep. 30, 2022
USD ($)
$ / shares
shares
Sep. 30, 2021
USD ($)
Dec. 31, 2021
USD ($)
$ / shares
shares
May 20, 2020
USD ($)
$ / shares
shares
Debt Instrument [Line Items]                      
Principal amount outstanding       $ 1,288,281,000       $ 1,288,281,000   $ 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       $ 178,371,000       $ 178,371,000   $ 122,470,000  
Partial repurchase of convertible notes               0 $ 289,312,000    
Loss on partial settlement of convertible notes       0 $ 0     0 56,382,000    
Debt, current       $ 89,654,000       89,654,000   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       $ 89,654,000       $ 89,654,000   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       $ 11,344,000       $ 11,344,000   $ 14,584,000  
Remaining discount amortization period               240.00%      
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%