Accumulated Other Comprehensive Income (Loss) (Schedule of amounts reclassified from AOCI) (Details) - USD ($) $ in Millions		12 Months Ended
		Jul. 28, 2024	Jul. 30, 2023	Jul. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold		$ (6,665)	$ (6,440)	$ (5,935)
Other expenses / (income)		(261)	(32)	(21)
Interest Expense	[1]	(249)	(188)	(189)
Taxes on earnings		(190)	(270)	(218)
Net Income (Loss) Attributable to Parent		567	858	757
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold		3	11	13
Interest Expense		(2)	(1)	(1)
Income (Loss), Including Portion Attributable to Noncontrolling Interest, before Tax		1	10	12
Taxes on earnings		0	(2)	(2)
Net Income (Loss) Attributable to Parent		1	8	10
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Commodity Derivative Contracts [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold		0	3	14
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Foreign Exchange Contract [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Cost of products sold		3	8	(1)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member] | Interest Rate Contract [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Interest Expense		(2)	(1)	(1)
Accumulated Defined Benefit Plans Adjustment, Net Prior Service Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other expenses / (income)		0	0	1
Taxes on earnings		0	0	0
Net Income (Loss) Attributable to Parent		$ 0	$ 0	$ 1

[1] In 2022, we recognized a loss of $4 million (including $3 million of premium and other costs) on the extinguishment of debt. See Note 13 for additional information.