FAIR VALUE MEASUREMENTS (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 01, 2020	Aug. 03, 2019
Fair Value Disclosures [Abstract]
Effect of one percent increase on fair value of interest rate fair value hedging instruments	$ 60.4
Effect of one percent decrease on fair value of interest rate fair value hedging instruments	57.1
Fuel supply and derivative agreements liability, net	0.1	$ 0.0
Foreign exchange derivatives liability, net	$ 0.2