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FINANCIAL INSTRUMENTS - Fair Value of Liabilities Measured on a Recurring Basis (Details) - USD ($) $ / shares in Units, shares in Millions	6 Months Ended
	Jun. 30, 2022	Jul. 31, 2020
Reported Value Measurement
Financial Assets:
Equity investments	$ 25,627,000
Convertible notes receivable	5,299,000
Financial Liabilities:
Acquisition-related contingent consideration	35,247,000
Reported Value Measurement | Term Loan B Facility Due 2026 | Secured Debt
Financial Liabilities:
Convertible senior notes	352,120,000
Reported Value Measurement | Convertible Senior Notes Due 2025 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	394,894,000
Reported Value Measurement | Convertible Senior Notes Due 2024 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	8,640,000
Estimate of Fair Value Measurement | Level 1
Financial Assets:
Equity investments	0
Convertible notes receivable	0
Financial Liabilities:
Acquisition-related contingent consideration	0
Estimate of Fair Value Measurement | Level 1 | Term Loan B Facility Due 2026 | Secured Debt
Financial Liabilities:
Convertible senior notes	0
Estimate of Fair Value Measurement | Level 1 | Convertible Senior Notes Due 2025 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	0
Estimate of Fair Value Measurement | Level 1 | Convertible Senior Notes Due 2024 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	0
Estimate of Fair Value Measurement | Level 2
Financial Assets:
Equity investments	0
Convertible notes receivable	0
Financial Liabilities:
Acquisition-related contingent consideration	0
Estimate of Fair Value Measurement | Level 2 | Term Loan B Facility Due 2026 | Secured Debt
Financial Liabilities:
Convertible senior notes	366,562,500
Estimate of Fair Value Measurement | Level 2 | Convertible Senior Notes Due 2025 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	417,855,000
Estimate of Fair Value Measurement | Level 2 | Convertible Senior Notes Due 2024 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	8,606,000
Estimate of Fair Value Measurement | Level 3
Financial Assets:
Equity investments	25,627,000
Convertible notes receivable	5,299,000
Financial Liabilities:
Acquisition-related contingent consideration	35,247,000
Estimate of Fair Value Measurement | Level 3 | Term Loan B Facility Due 2026 | Secured Debt
Financial Liabilities:
Convertible senior notes	0
Estimate of Fair Value Measurement | Level 3 | Convertible Senior Notes Due 2025 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	0
Estimate of Fair Value Measurement | Level 3 | Convertible Senior Notes Due 2024 | Unsecured Debt
Financial Liabilities:
Convertible senior notes	$ 0
Closing sale price (in dollars per share)	$ 58.30
Convertible Senior Notes Due 2025
Financial Liabilities:
Stated interest rate (as a percent)	0.75%
Closing sale price (in dollars per share)		$ 54.17
Initial conversion price of notes into common stock (in dollars per share)	$ 71.78	$ 71.78
Convertible Senior Notes Due 2025 | Maximum
Financial Liabilities:
Debt instrument, convertible, conversion premium (in shares)	5.6
Convertible Senior Notes Due 2025 | Unsecured Debt
Financial Liabilities:
Stated interest rate (as a percent)	0.75%	0.75%
Convertible Senior Notes Due 2024 | Unsecured Debt
Financial Liabilities:
Stated interest rate (as a percent)	3.375%

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