LEASES AND LEASE-FINANCED TRANSACTIONS - CASH FLOW INFORMATION (Details) $ in Millions	4 Months Ended
May 25, 2019 USD ($) property
LEASES AND LEASE-FINANCED TRANSACTIONS
Operating cash flows from operating leases	$ 239
Operating cash flows from finance leases	14
Financing cash flows from finance leases	9
Leased assets obtained in exchange for new operating lease liabilities	257
Leased assets obtained in exchange for new finance lease liabilities	33
Net gain recognized from sale and leaseback transactions	$ 51
Number of properties \| property	8
Total proceeds	$ 102

Represents the number of properties in sale leaseback transaction.

No definition available.

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Period Type:	duration

- Definition

Amount of cash inflow after closing and debt issuance costs received by a seller-lessee in a sale-leaseback.

+ References

No definition available.

+ Details

Name:	kr_SaleLeasebackTransactionProceeds
Namespace Prefix:	kr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of interest paid on finance lease liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash outflow for principal payment on finance lease.

+ References

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-Publisher FASB
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+ Details

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Balance Type:	credit
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- References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

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-Publisher FASB
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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of increase in right-of-use asset obtained in exchange for finance lease liability.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Amount of gain (loss) on sale and leaseback transaction from transfer of asset accounted for as sale.

+ References

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-Publisher FASB
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Balance Type:	credit
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