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ACCOUNTING POLICIES - SEGMENTS (Details)	12 Months Ended
	Jan. 28, 2023 segment
ACCOUNTING POLICIES
Company's retail operations (as a percent)	97.00%
Number of segments	1

X

- Definition

This element represents the percentage of sales and EBITDA for its only reportable segment to total sales.

+ References

No definition available.

+ Details

Name:	kr_CompanyRetailOperationPercentOfSales
Namespace Prefix:	kr_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

Name:	us-gaap_AccountingPoliciesAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e8672-108599

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration