Revenues from Franchised Restaurants (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Franchisor Disclosure
Rents	$ 1,961.7	$ 1,935.9	$ 4,944.8	$ 5,582.1
Royalties	1,071.3	1,067.6	2,762.1	3,056.1
Initial Fees	11.8	10.5	33.9	31.8
Revenues from franchised restaurants	$ 3,044.8	$ 3,014.0	$ 7,740.8	$ 8,670.0