Popeyes Acquisition - Additional Information (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
	Mar. 27, 2017	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 2016
Business Acquisition [Line Items]
Intangible assets, net		$ 10,841.6		$ 10,841.6		$ 9,228.0
Franchise Agreements
Business Acquisition [Line Items]
Intangible assets	$ 44.0
Weighted average useful life of intangible assets	17 years
Off-Market Favorable Lease
Business Acquisition [Line Items]
Intangible assets	$ 9.9
Weighted average useful life of intangible assets	14 years
Popeyes Acquisition
Business Acquisition [Line Items]
Acquisition date	Mar. 27, 2017
Total consideration of acquisition	$ 1,654.7
Value of equity awards transferred	32.6
Business acquisition funded by cash	354.7
PLK Transaction costs		8.5	$ 0.0	42.9	$ 0.0
Total decrease in goodwill				$ (210.5)
Intangible assets, net	1,319.0
Intangible assets	1,372.9
Popeyes Acquisition | Selling, General and Administrative Expenses
Business Acquisition [Line Items]
PLK Transaction costs		$ 34.4
Popeyes Acquisition | Long-term Debt
Business Acquisition [Line Items]
Incremental borrowings for business acquisition	$ 1,300.0