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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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