Financial Information by Operating Segment (Parenthetical) (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 17, 2018	Jun. 18, 2017	Jun. 17, 2018	Jun. 18, 2017
Segment Reporting Information [Line Items]
Revenue	$ 779,396	$ 628,611	$ 1,564,767	$ 1,252,828
Income from operations	126,145	112,867	259,621	228,901
Segment Income	144,450	127,718	295,425	258,652
Domestic Stores [Member] \| Domestic Franchise Advertising [Member]
Segment Reporting Information [Line Items]
Revenue	$ 80,929		$ 163,140
Alaska and Hawaii [Member] \| International Franchise [Member]
Segment Reporting Information [Line Items]
Revenue		$ 600		1,200
Income from operations				1,100
Segment Income				$ 1,100

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 32
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8933-108599

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 22
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=115929826&loc=d3e8736-108599

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration