Segment Information - Summary Sales Mix for Principal Product and Service Categories (Detail) - USD ($) $ in Millions	12 Months Ended
	Jun. 29, 2024	Jul. 01, 2023	Jul. 02, 2022
Segment Reporting Information [Line Items]
Total sales	$ 58,281.2	$ 57,254.7	$ 50,894.1
Cigarettes [Member]
Segment Reporting Information [Line Items]
Total sales	14,390.8	14,902.7	13,197.4
Center of the Plate [Member]
Segment Reporting Information [Line Items]
Total sales	11,509.8	11,285.7	11,332.2
Canned and Dry Groceries [Member]
Segment Reporting Information [Line Items]
Total sales	5,631.1	5,537.4	4,602.5
Frozen Foods [Member]
Segment Reporting Information [Line Items]
Total sales	5,564.9	4,989.2	4,086.8
Candy/Snack/Theater and Concession [Member]
Segment Reporting Information [Line Items]
Total sales	5,211.4	4,986.9	3,826.7
Refrigerated and Dairy Products [Member]
Segment Reporting Information [Line Items]
Total sales	4,441.3	4,557.4	4,230.2
Paper Products and Cleaning Supplies [Member]
Segment Reporting Information [Line Items]
Total sales	3,209.6	3,189.3	2,695.5
Beverage [Member]
Segment Reporting Information [Line Items]
Total sales	3,053.2	2,823.3	2,511.6
Other Tobacco Products [Member]
Segment Reporting Information [Line Items]
Total sales	2,857.9	2,978.8	2,511.1
Produce [Member]
Segment Reporting Information [Line Items]
Total sales	1,346.3	1,336.8	1,049.2
Other Miscellaneous Goods and Services [Member]
Segment Reporting Information [Line Items]
Total sales	$ 1,064.9	$ 667.2	$ 850.9