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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter.

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Amount of difference between inventory at lower of LIFO cost or market and inventory at lower of other inventory accounting method cost or market, for example, but not limited to, FIFO or average cost.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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The percentage of LIFO (last in first out) inventory to total inventory as of the balance sheet date if other than 100 percent.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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ACCOUNTING POLICIES - POLICIES (Details) - USD ($) $ in Millions		3 Months Ended						4 Months Ended		12 Months Ended
	Jun. 25, 2015	Jan. 30, 2016	Nov. 07, 2015	Aug. 15, 2015	Jan. 31, 2015	Nov. 08, 2014	Aug. 16, 2014	May. 23, 2015	May. 24, 2014	Jan. 30, 2016	Jan. 31, 2015	Feb. 01, 2014
Description of Business, Basis of Presentation and Principles of Consolidation
Stock split conversion ratio	2
Common stock dividend rate percentage	100.00%
Fiscal Year
Length of fiscal period		84 days	84 days	84 days	84 days	84 days	84 days	112 days	112 days	364 days	364 days	364 days
Inventories
Percentage of inventory valued at LIFO method		95.00%			95.00%					95.00%	95.00%
Replacement cost over carrying value		$ 1,272			$ 1,245					$ 1,272	$ 1,245
Impairment of Long-Lived Assets
Asset impairment charge										46	37	$ 39
Changes in self-insurance liability
Balance at the beginning of the period								$ 599	$ 569	599	569	537
Expense										234	246	220
Claim payments										(225)	(216)	(215)
Assumed from Roundy's or Harris Teeter										31		27
Balance at the end of the period		639			599					639	599	569
Less: Current portion		(223)			(213)					(223)	(213)	(224)
Long-term portion		416			386					416	386	345
Advertising Costs
Advertising costs										679	648	587
Property, Plant and Equipment
Depreciation and amortization		$ 508	$ 484	$ 477	$ 467	$ 456	$ 444	$ 620	$ 581	$ 2,089	$ 1,948	$ 1,703
Minimum
Store Closing Costs
Remaining lease terms of closed stores										1 year
Maximum
Store Closing Costs
Remaining lease terms of closed stores										20 years
Buildings and land improvements \| Minimum
Property, Plant and Equipment
Useful life of the assets										10 years
Buildings and land improvements \| Maximum
Property, Plant and Equipment
Useful life of the assets										40 years
Store equipment \| Minimum
Property, Plant and Equipment
Useful life of the assets										3 years
Store equipment \| Maximum
Property, Plant and Equipment
Useful life of the assets										9 years
Leasehold improvements \| Minimum
Property, Plant and Equipment
Useful life of the assets										4 years
Leasehold improvements \| Maximum
Property, Plant and Equipment
Useful life of the assets										25 years
Food production plant and distribution center equipment \| Minimum
Property, Plant and Equipment
Useful life of the assets										3 years
Food production plant and distribution center equipment \| Maximum
Property, Plant and Equipment
Useful life of the assets										15 years
Information Technology
Property, Plant and Equipment
Useful life of the assets										5 years