Goodwill and Intangible Assets, Net (Details) - USD ($) $ in Millions		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill	[1]	$ 1,501.9	$ 1,513.2	$ 1,515.0
Franchise rights - indefinite-lived		566.5	580.1
Other intangible assets		23.4	22.2
Intangible assets, gross		589.9	602.3
Less: accumulated amortization		(8.3)	(6.9)
Intangible assets, net		$ 581.6	$ 595.4

[1] Net of accumulated impairment losses of $1.47 billion associated with our single reporting unit (prior to September 30, 2008, our reporting unit structure was comprised of a single reporting unit) and $140.0 million associated with our Domestic reporting unit, both of which were recorded during the year ended December 31, 2008.