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Franchise Arrangements - Additional Information (Detail) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Franchisor Disclosure [Line Items]    
Franchise arrangement period 20 years  
Net property and equipment $ 22,842.7 $ 22,448.3
Land 5,521.4 5,662.2
Accumulated depreciation and amortization of property and equipment 14,350.9 $ 14,178.1
Franchise Arrangements    
Franchisor Disclosure [Line Items]    
Net property and equipment 17,800.0  
Land 4,900.0  
Accumulated depreciation and amortization of property and equipment $ 10,400.0