Property and Equipment, net - Interest Cost Capitalized and Depreciation and Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Property, Plant and Equipment [Abstract]
Interest cost capitalized	$ 2.0	$ 1.2	$ 5.2	$ 4.4
Depreciation and amortization expense for property and equipment	$ 34.9	$ 34.2	$ 106.8	$ 101.8