Property and Equipment, Net - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 1,092.3		$ 1,032.5
Accumulated depreciation	619.1		587.2
Depreciation	36.0	$ 43.1
Infrastructure Assets Acquired Under Finance Lease Agreements
Property, Plant and Equipment [Line Items]
Accumulated depreciation	129.9		124.6
Infrastructure Assets Held under Capital Leases
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 338.3		$ 321.8