Convertible Senior Notes Due 2023 - Narrative (Details)	1 Months Ended	12 Months Ended
	Mar. 31, 2018 day $ / shares Rate shares	Dec. 31, 2021 USD ($) $ / shares	Dec. 31, 2020 USD ($)
Debt Instrument [Line Items]
Strike price of the warrant transactions (in dollars per share) | $ / shares		$ 80.91
Convertible Debt
Debt Instrument [Line Items]
Interest rate (as a percent)	0.625%
Effective interest rate (as percent)	5.41%
Principal amount of debt | $		$ 402,500,000	$ 402,500,000
Conversion rate for the notes (in shares per $1,000 principal amount)	0.0168545
Conversion price (in dollars per share) | $ / shares	$ 59.33
Convertible note hedge options issued (in shares) | shares	402,500
Common stock issued upon conversion of Notes (in shares) | shares	6,800,000
Warrants issued (in shares) | shares	6,783,939
Conversion of debt to equity | $		$ 0	$ 0
Convertible Debt | Conversion Circumstance One
Debt Instrument [Line Items]
Threshold trading days (whether or not consecutive)	20
Consecutive trading day period (in days)	30
Conversion rate of the notes on trading day (as percent)	130.00%
Conversion option stock price trigger (in dollars per share) | $ / shares	$ 77.13
Convertible Debt | Conversion Circumstance Two
Debt Instrument [Line Items]
Threshold trading days (whether or not consecutive)	5
Consecutive trading day period (in days)	10
Conversion rate of the notes on trading day (as percent) | Rate	98.00%