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COMMITMENTS AND CONTINGENCIES (Details) $ in Millions | 4 Months Ended
--- | ---
May 20, 2023 USD ($) case
COMMITMENTS AND CONTINGENCIES |
Number of cases consolidated as Multi-District Litigation | case | 2,000
Litigation settlement expense | $ | $ 62

X
- Definition Number of cases consolidated as Multi-District litigation ("MDL"). + References No definition available. + Details
Name: | kr_NumberOfCasesConsolidatedAsMultiDistrictLitigation
Namespace Prefix: | kr_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of litigation expense, including but not limited to legal, forensic, accounting, and investigative fees. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration