Convertible Senior Notes - Capped Call Transactions Narrative, 2026 Notes and 2025 Notes (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) cappedCallTransaction $ / shares
Debt Instrument [Line Items]
Number of capped call transactions | cappedCallTransaction	2
Convertible Senior Notes Due June 2026 | Convertible Debt
Debt Instrument [Line Items]
Initial strike price (in dollars per share)	$ 88.6124
Initial cap price (in dollars per share)	$ 139.00
Cost incurred in connection with capped calls | $	$ 40.8
Convertible Notes Due November 2025 | Convertible Debt
Debt Instrument [Line Items]
Initial strike price (in dollars per share)	$ 140.1443
Initial cap price (in dollars per share)	$ 211.54
Cost incurred in connection with capped calls | $	$ 39.8