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Goodwill and Intangible Assets, Net (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]      
Goodwill $ 1,185.0 $ 1,501.9 $ 1,513.2
Franchise rights - indefinite-lived 509.0 566.5  
Other intangible assets 19.6 23.4  
Intangible assets, gross 528.6 589.9  
Less: accumulated amortization (7.1) (8.3)  
Intangible assets, net $ 521.5 $ 581.6