Reporting Segment Information - Summary of Sales by Type of Similar Products and Services (Detail) - USD ($) $ in Thousands	4 Months Ended
	Apr. 22, 2017	Apr. 23, 2016
Revenue from External Customer [Line Items]
Consolidated net sales	$ 2,402,504	$ 2,278,770
Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	100.00%	100.00%
Fuel [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 35,822	$ 27,154
Fuel [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	1.50%	1.20%
Non Perishables [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 1,466,226	$ 1,452,576
Non Perishables [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	61.00%	63.70%
Perishables [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 790,096	$ 694,450
Perishables [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	32.90%	30.50%
Pharmacy [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 110,360	$ 104,590
Pharmacy [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	4.60%	4.60%