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PROPERTY AND EQUIPMENT, NET - Property and Equipment, Net (Details) - USD ($) $ in Millions	12 Months Ended
	Jul. 31, 2021	Aug. 01, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 2,738	$ 2,512
Less accumulated depreciation and amortization	954	811
Property and equipment, net	1,784	1,701
Land
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	138	143
Buildings and improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 1,020	971
Buildings and improvements | Minimum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	10 years
Buildings and improvements | Maximum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	40 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 177	206
Leasehold improvements | Minimum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	10 years
Leasehold improvements | Maximum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	20 years
Equipment
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 980	878
Equipment | Minimum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	3 years
Equipment | Maximum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	25 years
Motor vehicles
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 70	74
Motor vehicles | Minimum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	5 years
Motor vehicles | Maximum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	8 years
Finance lease assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 144	161
Finance lease assets | Minimum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	1 year
Finance lease assets | Maximum
Property, Plant and Equipment [Line Items]
Original Estimated Useful Lives	11 years
Construction in progress
Property, Plant and Equipment [Line Items]
Property, plant and equipment, gross	$ 209	$ 79

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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