Debt - Convertible Senior Notes (Details) - 2027 Notes - Convertible Debt $ / shares in Units, $ in Millions	1 Months Ended
	Feb. 29, 2020 USD ($) trading_day $ / shares
Debt Instrument [Line Items]
Principal amount | $	$ 287.5
Stated percentage	1.75%
Net proceeds | $	$ 278.3
Threshold trading days	20
Threshold consecutive trading days	30
Threshold percentage of stock price trigger	130.00%
Conversion ratio	0.0308804
Conversion price (in dollars per share) | $ / shares	$ 32.38
Redemption price, percentage	100.00%
Debt Conversion Terms One
Debt Instrument [Line Items]
Threshold trading days	20
Threshold consecutive trading days	30
Threshold percentage of stock price trigger	130.00%
Debt Conversion Terms Two
Debt Instrument [Line Items]
Threshold trading days	5
Threshold consecutive trading days	10
Threshold percentage of stock trading price	98.00%