Financial Instruments (Schedule of Cash Flow Hedges in Statements of Earnings) (Details) - USD ($) $ in Millions		3 Months Ended	12 Months Ended
		May 02, 2021	Jul. 31, 2022	Aug. 01, 2021	Aug. 02, 2020
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cost of products sold			$ 5,935	$ 5,665	$ 5,692
Interest expense	[1]		189	210	345
Other expenses / (income)			21	(254)	221
Earnings (loss) from discontinued operations		$ 6	0	(6)	1,036
Reclassification out of Accumulated Other Comprehensive Income [Member] | Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Cost of products sold			(13)	6	(2)
Interest expense			$ 1	1	1
Other expenses / (income)				$ 1
Earnings (loss) from discontinued operations					$ (1)

[1] In 2022, we recognized a loss of $4 million (including $3 million of premium and other costs) on the extinguishment of debt. In 2020, we recognized a loss of $75 million (including $65 million of premium, fees and other costs paid with the tender offers and unamortized debt issuance costs). See Note 12 for additional information.