Long-Term Obligations and Commitments, Convertible Debt and Call Spread (Details) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions	3 Months Ended	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2019	Apr. 30, 2021
Convertible Debt [Abstract]
Repurchase of convertible senior notes		$ 0	$ 0	$ 61,967
Gain (loss) on early retirement of debt		13,389	0	(8,627)
Unamortized debt issuance costs		20,061
Purchase of note hedges		0	0	136,620
Proceeds from issuance of warrants		0	0	89,752
Amortization of debt issuance costs		6,330	5,373	4,958
Convertible Senior Notes [Member]
Convertible Debt [Abstract]
Amortization of debt issuance costs		5,900	5,300	4,900
1.75% Notes [Member]
Convertible Debt [Abstract]
Face amount of offering		575,000
Proceeds from issuance of convertible senior notes		575,000	$ 0	0
Outstanding principal balance		575,000
Unamortized debt issuance costs		$ 12,700
Maturity date		Jun. 30, 2028
Interest rate		1.75%	1.75%
Effective interest rate		2.30%
Conversion price per share (in dollars per share)		$ 53.73
Total shares of common stock subject to conversion (in shares)		10.7
Percentage of principal amount used as purchase price upon occurrence of fundamental change		100.00%
1.75% Notes [Member]
Convertible Debt [Abstract]
Proceeds from issuance of convertible senior notes		$ 488,200
0% Notes [Member]
Convertible Debt [Abstract]
Face amount of offering				632,500
Proceeds from issuance of convertible senior notes		0	$ 0	$ 632,500
Outstanding principal balance		632,500
Unamortized debt issuance costs		$ 7,200
Maturity date		Apr. 30, 2026
Interest rate		0.00%	0.00%	0.00%		0.00%
Effective interest rate		0.50%
Conversion price per share (in dollars per share)		$ 57.84
Effective conversion price per share with call spread (in dollars per share)		$ 76.39
Total shares of common stock subject to conversion (in shares)		10.9
Cost of call spread				$ 46,900
Purchase of note hedges				136,700
Proceeds from issuance of warrants				89,800
Percentage of principal amount used as purchase price upon occurrence of fundamental change		100.00%
0% Notes [Member]
Convertible Debt [Abstract]
Proceeds from issuance of convertible senior notes				$ 319,000
0.125% Notes [Member]
Convertible Debt [Abstract]
Repurchase of convertible senior notes		$ 504,400
Principal amount repurchased		504,400
Outstanding principal balance		44,500
Unamortized debt issuance costs		$ 200
Maturity date		Dec. 31, 2024
Interest rate	0.125%	0.125%	0.125%	0.125%	0.125%
Effective interest rate		0.50%
Conversion price per share (in dollars per share)		$ 83.28
Effective conversion price per share with call spread (in dollars per share)		$ 123.38
Total shares of common stock subject to conversion (in shares)		0.5
Cost of call spread					$ 52,600
Purchase of note hedges					108,700
Proceeds from issuance of warrants	$ 56,100
Percentage of principal amount used as purchase price upon occurrence of fundamental change		100.00%
0.125% Notes [Member] | Other Income [Member]
Convertible Debt [Abstract]
Gain (loss) on early retirement of debt		$ 13,400
0.125% Convertible Senior Notes Issued in Exchange for 1 Percent Notes [Member]
Convertible Debt [Abstract]
Face amount of offering	439,300				439,300
0.125% Convertible Senior Notes Issued under Subscription Agreements [Member]
Convertible Debt [Abstract]
Face amount of offering	109,500				109,500
1% Notes [Member]
Convertible Debt [Abstract]
Repurchase of convertible senior notes				$ 309,900
Principal amount repurchased	$ 375,600			$ 247,900	$ 375,600
Interest rate		1.00%		1.00%