Property and Equipment, net - Interest Cost Capitalized and Depreciation and Amortization Expense (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Property, Plant and Equipment [Abstract]
Interest cost capitalized	$ 1.3	$ 2.1	$ 3.2	$ 3.9
Depreciation and amortization expense for property and equipment	$ 33.6	$ 28.8	$ 67.6	$ 57.0