Description of Business and Summary of Significant Accounting Policies - Additional Information (Detail) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 28, 2015 USD ($)	Jul. 03, 2016 USD ($) Country State	Jun. 28, 2015 USD ($)
Accounting Policies [Abstract]
Number of States in which Entity Operates | State		47
Number of foreign countries in which Entity operates | Country		12
Related Party Transaction [Line Items]
Mergerrelatedlitigationcostsreclassifiedinpriorperiod	$ 1.2		$ 2.0
Contributions from franchisees to advertising and media funds		$ 1.2	$ 1.1