This element represents the percentage of sales for this product to the total during the reporting period.

No definition available.

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Namespace Prefix:	kr_
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Period Type:	duration

- Definition

The typical period for collection of third party receivables.

+ References

No definition available.

+ Details

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- Definition

The typical period for redemption of gift certificates.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of obligation to transfer good or service to customer for which consideration has been received or is receivable.

+ References

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Balance Type:	credit
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- Definition

The aggregate cost of goods produced and sold during the reporting period, excluding depreciation, depletion, and amortization.

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

The total amount due to the entity within one year of the balance sheet date (or one operating cycle, if longer) from outside sources, including trade accounts receivable, notes and loans receivable, as well as any other types of receivables, net of allowances established for the purpose of reducing such receivables to an amount that approximates their net realizable value.

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Balance Type:	debit
Period Type:	instant

- Definition

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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ACCOUNTING POLICIES - Revenue Recognition (Details) - USD ($) $ in Millions		4 Months Ended
	Feb. 04, 2018	May 26, 2018	May 20, 2017	Feb. 03, 2018
Disaggregation of revenue
Receivables		$ 1,583		$ 1,637
Typical period for redemption of gift certificates		12 months
Gift card and gift certificate deferred revenue liability		$ 72	$ 90
Total Sales and other revenue		$ 37,530	$ 36,285
Percentage of total sales		100.00%	100.00%
Merchandise costs, including advertising, warehousing, and transportation, excluding items shown separately below		$ 29,362	$ 28,281
Non Perishable
Disaggregation of revenue
Total Sales and other revenue		$ 18,289	$ 17,927
Percentage of total sales		48.70%	49.40%
Fresh
Disaggregation of revenue
Total Sales and other revenue		$ 9,083	$ 8,775
Percentage of total sales		24.20%	24.20%
Supermarket Fuel
Disaggregation of revenue
Total Sales and other revenue		$ 4,560	$ 3,817
Percentage of total sales		12.20%	10.50%
Pharmacy
Disaggregation of revenue
Typical period for collection of third party receivables		3 months
Receivables		$ 635		$ 571
Total Sales and other revenue		$ 3,236	$ 3,198
Percentage of total sales		8.60%	8.80%
Pharmacy \| Adjustment
Disaggregation of revenue
Total Sales and other revenue	$ (61)
Merchandise costs, including advertising, warehousing, and transportation, excluding items shown separately below	$ (61)
Convenience Stores
Disaggregation of revenue
Total Sales and other revenue		$ 944	$ 1,311
Percentage of total sales		2.50%	3.60%
Other
Disaggregation of revenue
Total Sales and other revenue		$ 1,418	$ 1,257
Percentage of total sales		3.80%	3.50%