XML 31 R38.htm IDEA: XBRL DOCUMENT
v3.19.2

LEASES AND LEASE-FINANCED TRANSACTIONS - SUB LEASES (Details) $ in Millions | Aug. 17, 2019 USD ($)
--- | ---
LEASES AND LEASE-FINANCED TRANSACTIONS |
Future minimum rentals under non-cancellable subleases | $ 276

X
- Definition Minimum payment receivable in the future under non-cancellable subleases. + References No definition available. + Details
Name: | kr_LesseeOperatingLeaseSubleasePaymentReceivable
Namespace Prefix: | kr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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