XML 51 R39.htm IDEA: XBRL DOCUMENT
v3.21.2

Property Held For Lease And Rental Income (Narrative) (Details) | 12 Months Ended
--- | ---
Sep. 25, 2021 item
Property Held For Lease And Rental Income [Abstract] |
Number of shopping centers | 83
Maximum period for non-cancelable operating lease agreements | 20 years

X
- Definition Maximum period for non-cancelable operating lease agreements. + References No definition available. + Details
Name: | imkta_MaximumPeriodForNonCancelableOperatingLeaseAgreements
Namespace Prefix: | imkta_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of Shopping Centers + References No definition available. + Details
Name: | imkta_NumberOfShoppingCenters
Namespace Prefix: | imkta_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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