COMPANY-SPONSORED BENEFIT PLANS - DEFINED CONTRIBUTION PLAN INFORMATION (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 29, 2022	Jan. 30, 2021	Feb. 01, 2020
COMPANY- SPONSORED BENEFIT PLANS
Contribution to 401(k) retirement savings accounts	$ 289	$ 294	$ 264
Severance expenses, before tax			80
Severance expenses, net of tax			61
Severance and related benefits included in other current liabilities			$ 42

Amount of expenses for special or contractual termination benefits, net of tax.

No definition available.

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- Definition

Amount of unpaid severance and related benefits as of the balance sheet date.

+ References

No definition available.

+ Details

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Namespace Prefix:	kr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

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- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

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