DEBT - Convertible Senior Notes (Details)			3 Months Ended	12 Months Ended
	Jun. 01, 2022 USD ($)	Jul. 24, 2020 USD ($) day $ / shares shares	Sep. 30, 2020 USD ($)	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 07, 2023 USD ($)	Mar. 08, 2023 USD ($)	May 31, 2017 USD ($) $ / shares shares
Debt Instrument [Line Items]
Gain on the extinguishment of debt				$ 48,562,000	$ 0	$ 0
Write-off of previously-capitalized debt issuance costs				0	0	1,066,000
Amortization of debt issuance costs				3,137,000	6,432,000	5,992,000
Amortization of debt discount				0	1,475,000	$ 30,695,000
2025 Convertible Notes
Debt Instrument [Line Items]
Interest rate (percentage)						0.50%
Repurchased face amount							$ 100,200,000	$ 190,600,000
Repurchased amount							81,200,000	156,300,000
Repurchased amount, accrued interest							$ 200,000	$ 100,000
Gain on the extinguishment of debt				53,300,000
Write-off of previously-capitalized debt issuance costs				3,200,000
Debt repayment costs				1,600,000
Conversion rate, number of shares per $1,000 of principal | shares		2.1683
Conversion price (in dollars per share) | $ / shares		$ 461.19
Threshold percentage of stock price trigger		130.00%
Redemption percentage		100.00%
Nonconvertible debt borrowing rate at the date of issuance (percentage)		5.30%
Convertible debt, noncurrent		$ 455,600,000
Carrying amount of debt, equity component		119,400,000
Debt issuance costs, gross		15,100,000
Debt issuance costs, liability component		12,000,000		2,321,000	7,734,000
Debt issuance costs, equity component		$ 3,100,000
Interest expense				4,300,000	5,900,000	$ 27,200,000
Interest expense, excluding amortization				$ 2,100,000	$ 2,900,000	$ 2,900,000
Interest rate				0.50%	0.50%	0.50%
Amortization of debt issuance costs				$ 2,200,000	$ 3,000,000	$ 2,200,000
Amortization of debt discount						22,100,000
Repayments of convertible debt				237,464,000	0	$ 0
2025 Convertible Notes | Conversion option one
Debt Instrument [Line Items]
Threshold trading days | day		20
Threshold consecutive trading days | day		30
Threshold percentage of stock price trigger		130.00%
2025 Convertible Notes | Conversion option two
Debt Instrument [Line Items]
Threshold trading days | day		5
Threshold consecutive trading days | day		5
Threshold percentage of stock price trigger		98.00%
2025 Convertible Notes | Convertible Debt
Debt Instrument [Line Items]
Aggregate principal amount		$ 575,000,000
Interest rate (percentage)		0.50%
Long-term debt, fair value				235,200,000
2025 Notes Under 13-day Purchase Option | Convertible Debt
Debt Instrument [Line Items]
Aggregate principal amount		$ 75,000,000
2022 Convertible Notes
Debt Instrument [Line Items]
Aggregate principal amount									$ 300,000,000
Interest rate (percentage)						0.625%			0.625%
Repurchased face amount		130,300,000
Repurchased amount, accrued interest		100,000
Conversion rate, number of shares per $1,000 of principal | shares									4.8163
Conversion price (in dollars per share) | $ / shares									$ 207.63
Nonconvertible debt borrowing rate at the date of issuance (percentage)									5.36%
Convertible debt, noncurrent									$ 238,400,000
Carrying amount of debt, equity component									61,600,000
Debt issuance costs, gross									9,300,000
Debt issuance costs, liability component									7,400,000
Debt issuance costs, equity component									$ 1,900,000
Interest expense					800,000	$ 9,500,000
Interest expense, excluding amortization					$ 400,000	$ 1,100,000
Interest rate					0.625%	0.625%
Amortization of debt issuance costs					$ 400,000	$ 900,000
Amortization of debt discount						7,500,000
Repayments of convertible debt	$ 169,700,000	234,000,000		0	169,659,000	$ 0
Extinguishment of debt		126,000,000
Repurchase of convertible debt, reduction to additional paid-in capital		$ 107,900,000
Loss on debt extinguishment			$ 7,800,000
Credit Agreement | Line of Credit | Delayed Draw Term Loan
Debt Instrument [Line Items]
Interest expense				$ 22,200,000	18,200,000
Amortization of debt issuance costs					2,000,000
Amortization of debt discount					1,500,000
Credit Agreement | Line of Credit | Delayed Draw Term Loan | LIBOR
Debt Instrument [Line Items]
Interest expense, excluding amortization					$ 9,600,000