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Earnings Per Share - Antidilutive Securities (Details) - $ / shares shares in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Oct. 31, 2017
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	2,790	800	970
Convertible Debt \| Convertible Notes, due 2024
Antidilutive Securities Excluded from Computation of Earnings Per Share
Debt instrument, conversion price (usd per share)				$ 58.725
Convertible Debt \| Convertible Notes, due 2024 \| Maximum
Antidilutive Securities Excluded from Computation of Earnings Per Share
Debt instrument, conversion price (usd per share)	$ 71.775			$ 71.775
Share-based awards
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	30	270	150
Convertible note hedge and capped call transactions
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	2,760	530	820
Warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share
Total anti-dilutive securities	0	0	0