Property and Equipment, net - Interest Cost Capitalized and Depreciation and Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Property, Plant and Equipment [Abstract]
Interest cost capitalized	$ 1.7	$ 1.3	$ 3.2	$ 3.2
Depreciation and amortization expense for property and equipment	$ 36.0	$ 33.6	$ 71.9	$ 67.6