Property and Equipment - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment [Line Items]
Depreciation and amortization	$ 64.4	$ 73.8	$ 76.3
Accrued purchases of property and equipment	0.5	5.9
Gain (loss) on disposition of property plant equipment			0.1
Capitalized computer software, net	1.5	2.2
Depreciation, Depletion and Amortization	63.9	73.2	$ 74.8
Capitalized computer software, additions	$ 28.2	$ 48.3