Segment Information - Summary Sales Mix for Principal Product and Service Categories (Detail) - USD ($) $ in Millions	12 Months Ended
	Jul. 01, 2023	Jul. 02, 2022	Jul. 03, 2021
Segment Reporting Information [Line Items]
Total sales	$ 57,254.7	$ 50,894.1	$ 30,398.9
Cigarettes [Member]
Segment Reporting Information [Line Items]
Total sales	14,902.7	13,197.4	4,231.4
Center of the Plate [Member]
Segment Reporting Information [Line Items]
Total sales	11,285.7	11,332.2	8,931.1
Canned and Dry Groceries [Member]
Segment Reporting Information [Line Items]
Total sales	5,537.4	4,602.5	3,290.0
Frozen Foods [Member]
Segment Reporting Information [Line Items]
Total sales	4,989.2	4,086.8	3,484.4
Candy/Snack/Theater and Concession [Member]
Segment Reporting Information [Line Items]
Total sales	4,986.9	3,826.7	1,725.0
Refrigerated and Dairy Products [Member]
Segment Reporting Information [Line Items]
Total sales	4,557.4	4,230.2	2,951.0
Paper Products and Cleaning Supplies [Member]
Segment Reporting Information [Line Items]
Total sales	3,189.3	2,695.5	2,312.1
Other Tobacco Products [Member]
Segment Reporting Information [Line Items]
Total sales	2,978.8	2,511.1	704.0
Beverage [Member]
Segment Reporting Information [Line Items]
Total sales	2,823.3	2,511.6	1,534.9
Produce [Member]
Segment Reporting Information [Line Items]
Total sales	1,336.8	1,049.2	876.6
Other Miscellaneous Goods and Services [Member]
Segment Reporting Information [Line Items]
Total sales	$ 667.2	$ 850.9	$ 358.4