Basis of Presentation and Updates to Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		8 Months Ended
	Sep. 09, 2018	Sep. 10, 2017	Sep. 09, 2018	Sep. 10, 2017	Dec. 31, 2017	[1]
Basis of Presentation [Line Items]
Revenue	$ 785,965	$ 643,642	$ 2,350,732	$ 1,896,470
Advertising fund assets, restricted	118,833		118,833		$ 120,223
International Franchise [Member] | Alaska and Hawaii [Member]
Basis of Presentation [Line Items]
Revenue		600		1,800
International Franchise [Member] | International Franchise Royalties and Fees [Member]
Basis of Presentation [Line Items]
Revenue	50,424	48,350	154,182	134,242
Domestic Stores [Member] | Domestic Franchise [Member]
Basis of Presentation [Line Items]
Advertising fund assets, restricted	112,200		112,200
Domestic Stores [Member] | Domestic Franchise [Member] | Cash and Investments [Member]
Basis of Presentation [Line Items]
Advertising fund assets, restricted	107,100		107,100
Domestic Stores [Member] | Domestic Franchise [Member] | Prepaid Expenses [Member]
Basis of Presentation [Line Items]
Advertising fund assets, restricted	11,300		11,300
Domestic Stores [Member] | Domestic Franchise [Member] | Accounts Receivable [Member]
Basis of Presentation [Line Items]
Advertising fund assets, restricted	400		400
Domestic Stores [Member] | Domestic Company Owned Stores [Member]
Basis of Presentation [Line Items]
Revenue	118,540	112,905	358,521	338,880
Cash contributed from company owned store	6,600		6,600
Domestic Stores [Member] | Domestic Franchise Royalties and Fees [Member]
Basis of Presentation [Line Items]
Revenue	89,427	80,244	266,335	242,548
Domestic Stores [Member] | Domestic Franchise Advertising [Member]
Basis of Presentation [Line Items]
Revenue	82,478		245,618
Supply Chain [Member]
Basis of Presentation [Line Items]
Revenue	$ 445,096	$ 402,143	$ 1,326,076	$ 1,180,800

[1] Note: The balance sheet at December 31, 2017 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.