Divestitures (Narrative) (Details) £ in Millions, $ in Millions					3 Months Ended				12 Months Ended
		May 03, 2021 USD ($)	Dec. 23, 2019 USD ($)	Sep. 23, 2019 USD ($)	May 02, 2021 USD ($)	Apr. 26, 2020 USD ($)	Oct. 27, 2019 USD ($)	Oct. 27, 2019 GBP (£)	Jul. 31, 2022 USD ($)	Aug. 01, 2021 USD ($)	Aug. 02, 2020 USD ($)
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sales of businesses									$ 0	$ 11	$ (975)
Income (Loss) from Discontinued Operations, Net of Tax, Including Portion Attributable to Noncontrolling Interest					$ (6)				$ 0	6	(1,036)
Kelsen [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses				$ 322
Arnott's and International [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses			$ 2,286			$ 4
European Chips Business [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses							$ 77	£ 63
Net sales											25
Loss on sales of businesses							64				64	[1]
Gain (Loss) on Disposition of Business, Net of Tax							$ (37)
Plum Baby
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from Divestiture of Businesses		$ 101
Net sales										68	$ 104
Loss on sales of businesses	[1]									11
Gain (Loss) on Disposition of Business, Net of Tax										$ 3

[1] In 2021, we recognized a loss of $11 million on the sale of the Plum baby food and snacks business. In 2020, we recognized a loss of $64 million on the sale of the European chips business. See Note 3 for additional information.