Summary of Significant Accounting Policies - Property and Equipment Owned, Net (Detail)	12 Months Ended
	Dec. 27, 2017
Buildings
Property, Plant and Equipment [Line Items]
Estimated useful service lives	20 years
Land improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	3 years
Land improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	30 years
Building improvements | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	3 years
Building improvements | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	10 years
Restaurant equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	3 years
Restaurant equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	10 years
Other equipment | Minimum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	2 years
Other equipment | Maximum
Property, Plant and Equipment [Line Items]
Estimated useful service lives	10 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Estimated useful service lives	Shorter of useful life or lease term