Popeyes Acquisition - Schedule of Preliminary Allocation of Consideration to Net Tangible and Intangible Assets Acquired (Detail) - Popeyes Acquisition $ in Millions	Mar. 27, 2017 USD ($)
Business Acquisition [Line Items]
Total current assets	$ 80.0
Property and equipment	114.4
Intangible assets	1,372.9
Other assets	0.7
Total current liabilities	(74.7)
Total debt and capital lease obligations	(159.0)
Deferred income taxes	(524.2)
Other liabilities	(23.2)
Total identifiable net assets	786.9
Goodwill	867.8
Total consideration	$ 1,654.7