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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. 15, 2017	Jul. 16, 2016	Jul. 15, 2017	Jul. 16, 2016
Revenue from External Customer [Line Items]
Consolidated net sales	$ 1,894,709	$ 1,827,562	$ 4,297,213	$ 4,106,332
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	$ 29,709	$ 29,148	$ 65,531	$ 56,302
Fuel [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	1.60%	1.60%	1.50%	1.40%
Center Store [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 1,130,910	$ 1,134,822	$ 2,597,127	$ 2,587,398
Center Store [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	59.70%	62.10%	60.40%	63.00%
Fresh [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 653,735	$ 582,697	$ 1,443,840	$ 1,277,147
Fresh [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	34.50%	31.90%	33.60%	31.10%
Pharmacy [Member]
Revenue from External Customer [Line Items]
Consolidated net sales	$ 80,355	$ 80,895	$ 190,715	$ 185,485
Pharmacy [Member] | Sales Revenue [Member] | Product Concentration Risk [Member]
Revenue from External Customer [Line Items]
Consolidated net sales, Percentage	4.20%	4.40%	4.50%	4.50%

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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
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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-Section 50
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
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