XML 43 R32.htm IDEA: XBRL DOCUMENT v3.25.1

Dividends (Narrative) (Details) - $ / shares		3 Months Ended		6 Months Ended
	Apr. 17, 2025	Mar. 29, 2025	Mar. 30, 2024	Mar. 29, 2025	Mar. 30, 2024
Class A Common Stock [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock		$ 0.165	$ 0.165	$ 0.33	$ 0.33
Class B Common Stock [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock		$ 0.150	$ 0.150	$ 0.30	$ 0.30
O2025 Q1 Dividends [Member]
Dividends Payable [Line Items]
Dividend payment date				Oct. 17, 2024
Dividend record date				Oct. 10, 2024
O2025 Q1 Dividends [Member] | Class A Common Stock [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock				$ 0.165
O2025 Q1 Dividends [Member] | Class B Common Stock [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock				$ 0.15
O2025 Q2 Dividends [Member]
Dividends Payable [Line Items]
Dividend payment date				Jan. 16, 2025
Dividend record date				Jan. 09, 2025
O2025 Q2 Dividends [Member] | Class A Common Stock [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock				$ 0.165
O2025 Q2 Dividends [Member] | Class B Common Stock [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock				$ 0.15
O2025 Q3 Dividends [Member] | Subsequent Event [Member]
Dividends Payable [Line Items]
Dividend payment date	Apr. 17, 2025
Dividend record date	Apr. 10, 2025
O2025 Q3 Dividends [Member] | Class A Common Stock [Member] | Subsequent Event [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock	$ 0.165
O2025 Q3 Dividends [Member] | Class B Common Stock [Member] | Subsequent Event [Member]
Dividends Payable [Line Items]
Cash dividends per share of common stock	$ 0.15

X

- Definition

Aggregate dividends paid during the period for each share of common stock outstanding.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480008/505-10-S99-1

+ Details

Name:	us-gaap_CommonStockDividendsPerShareCashPaid
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the declared dividend will be paid, in YYYY-MM-DD format.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-3

+ Details

Name:	us-gaap_DividendPayableDateToBePaidDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Date the holder must own the stock to be entitled to the dividend, in YYYY-MM-DD format.

+ References

No definition available.

+ Details

Name:	us-gaap_DividendsPayableDateOfRecordDayMonthAndYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassBMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=imkta_O2025Q1DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=imkta_O2025Q2DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DividendsAxis=imkta_O2025Q3DividendsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: