Business And Geographic Segment Information Business And Geographic Segment Information (Geographic Information, Net Sales) (Details) - USD ($) $ in Millions	12 Months Ended
Aug. 01, 2021	Aug. 02, 2020	Jul. 28, 2019
Segment Reporting Information [Line Items]
Net sales	$ 8,476	$ 8,691	$ 8,107
UNITED STATES
Segment Reporting Information [Line Items]
Net sales	7,951	8,165	7,492
Other Countries [Member]
Segment Reporting Information [Line Items]
Net sales	$ 525	$ 526	$ 615

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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+ Details