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Reporting Segment Information - Summary of Sales by Type of Similar Products and Services (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 16, 2016	Jul. 18, 2015	Jul. 16, 2016	Jul. 18, 2015
Revenue from External Customer [Line Items]
Consolidated net sales	$ 1,827,562	$ 1,795,864	$ 4,106,332	$ 4,108,547
Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	100.00%	100.00%	100.00%	100.00%
Fuel [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 29,148	$ 32,915	$ 56,302	$ 67,814
Fuel [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	1.60%	1.80%	1.40%	1.70%
Non Perishables [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 1,134,822	$ 1,122,910	$ 2,587,398	$ 2,595,622
Non Perishables [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	62.10%	62.50%	63.00%	63.10%
Perishables [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 582,697	$ 570,921	$ 1,277,147	$ 1,283,954
Perishables [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	31.90%	31.80%	31.10%	31.30%
Pharmacy [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 80,895	$ 69,118	$ 185,485	$ 161,157
Pharmacy [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	4.40%	3.90%	4.50%	3.90%

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Section S99
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