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Segment Information (Sales By Product Category) (Details) (USD $)	3 Months Ended		6 Months Ended
	Mar. 29, 2014	Mar. 30, 2013	Mar. 29, 2014	Mar. 30, 2013
Segment Reporting Information By Segment [Line Items]
Net sales	$ 947,760,587	$ 920,694,264	$ 1,892,885,457	$ 1,855,671,791
Grocery [Member]
Segment Reporting Information By Segment [Line Items]
Net sales	355,658,000	359,466,000	714,557,000	730,727,000
Non-Foods [Member]
Segment Reporting Information By Segment [Line Items]
Net sales	176,580,000	170,271,000	358,454,000	347,975,000
Perishables [Member]
Segment Reporting Information By Segment [Line Items]
Net sales	230,450,000	218,433,000	457,052,000	438,381,000
Gasoline [Member]
Segment Reporting Information By Segment [Line Items]
Net sales	145,760,000	138,204,000	288,471,000	269,087,000
Grocery Sales [Member]
Segment Reporting Information By Segment [Line Items]
Net sales	$ 908,448,000	$ 886,374,000	$ 1,818,534,000	$ 1,786,170,000

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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

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