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DEBT - Convertible Note Hedge and Warrant Transactions (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jul. 24, 2020 | May 31, 2017 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019 | Jul. 21, 2020 | May 24, 2017
Debt Instrument [Line Items] |  |  |  |  |  |  |
Payment of convertible note hedge transactions |  |  | $ 0 | $ 124,200 | $ 0 |  |
Share price (in dollars per share) |  |  | $ 122.60 |  |  |  |
Proceeds from issuance of warrants |  |  | $ 0 | 61,180 | 0 |  |
Proceeds from hedge and warrant terminations |  |  | 0 | 109,881 | 0 |  |
Payments for repurchase of warrants |  |  | $ 0 | $ 94,292 | $ 0 |  |
2020 Warrants |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Net proceeds from the convertible notes used to pay for the cost of the convertible note hedge | $ 63,000 |  |  |  |  |  |
Payment of convertible note hedge transactions | $ 124,200 |  |  |  |  |  |
Number of shares covered by the hedge transactions | 1.2 |  |  |  |  |  |
Conversion price (in dollars per share) | $ 461.19 |  |  |  |  |  |
Exercise price (in dollars per share) | $ 709.52 |  |  |  |  |  |
Premium of warrant strike price over sales price of common stock (percentage) | 100.00% |  |  |  |  |  |
Share price (in dollars per share) |  |  |  |  |  | $ 354.76 |
Proceeds from issuance of warrants | $ 61,200 |  |  |  |  |  |
2017 Warrants |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Net proceeds from the convertible notes used to pay for the cost of the convertible note hedge |  | $ 18,100 |  |  |  |  |
Payment of convertible note hedge transactions |  | $ 61,500 |  |  |  |  |
Number of shares covered by the hedge transactions | 0.8 | 1.4 |  |  |  |  |
Conversion price (in dollars per share) |  | $ 207.63 |  |  |  |  |
Exercise price (in dollars per share) |  | $ 266.39 |  |  |  |  |
Premium of warrant strike price over sales price of common stock (percentage) |  | 70.00% |  |  |  |  |
Share price (in dollars per share) |  |  |  |  |  |  | $ 156.70
Proceeds from issuance of warrants |  | $ 43,400 |  |  |  |  |
Net proceeds from hedge and warrants | $ 15,600 |  |  |  |  |  |

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