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v2.4.1.9

Segment Information (Sales By Product Category) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 27, 2014 | Jun. 28, 2014 | Mar. 29, 2014 | Dec. 28, 2013 | Sep. 28, 2013 | Jun. 29, 2013 | Mar. 30, 2013 | Dec. 29, 2012 | Sep. 27, 2014 | Sep. 28, 2013 | Sep. 29, 2012
Segment Reporting Information By Segment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales | $ 964,838,000 us-gaap_SalesRevenueGoodsNet | $ 978,262,000 us-gaap_SalesRevenueGoodsNet | $ 947,761,000 us-gaap_SalesRevenueGoodsNet | $ 945,125,000 us-gaap_SalesRevenueGoodsNet | $ 948,854,000 us-gaap_SalesRevenueGoodsNet | $ 934,015,000 us-gaap_SalesRevenueGoodsNet | $ 920,694,000 us-gaap_SalesRevenueGoodsNet | $ 934,977,000 us-gaap_SalesRevenueGoodsNet | $ 3,835,985,953 us-gaap_SalesRevenueGoodsNet | $ 3,738,540,461 us-gaap_SalesRevenueGoodsNet | $ 3,718,314,651 us-gaap_SalesRevenueGoodsNet
Grocery [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information By Segment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 1,397,870,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GroceryMember | 1,424,869,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GroceryMember | 1,447,520,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GroceryMember
Non-Foods [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information By Segment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 729,934,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_NonFoodsMember | 707,294,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_NonFoodsMember | 709,959,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_NonFoodsMember
Perishables [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information By Segment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 937,402,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_PerishablesMember | 898,956,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_PerishablesMember | 866,252,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_PerishablesMember
Gasoline [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information By Segment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | 618,147,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GasolineMember | 568,701,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GasolineMember | 553,779,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GasolineMember
Grocery Sales [Member] |  |  |  |  |  |  |  |  |  |  |
Segment Reporting Information By Segment [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  | $ 3,683,353,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GrocerySalesMember | $ 3,599,820,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GrocerySalesMember | $ 3,577,510,000 us-gaap_SalesRevenueGoodsNet / us-gaap_StatementBusinessSegmentsAxis = imkta_GrocerySalesMember

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- Definition Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(a)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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