Goodwill and Purchased Intangible Assets - Schedule of Purchased Intangible Assets With Finite and Indefinite Lives (Details) - USD ($)	3 Months Ended		9 Months Ended
	Apr. 26, 2025	Apr. 27, 2024	Apr. 26, 2025	Apr. 27, 2024	Jul. 27, 2024
Purchased intangible assets with finite lives:
Gross	$ 12,243,000,000		$ 12,243,000,000		$ 14,077,000,000
Accumulated Amortization	(2,621,000,000)		(2,621,000,000)		(2,884,000,000)
Total purchased intangible assets with finite lives, net	9,622,000,000		9,622,000,000		11,193,000,000
In-process research and development, with indefinite lives	21,000,000		21,000,000		26,000,000
Total finite and indefinite lives intangible assets, gross	12,264,000,000		12,264,000,000		14,103,000,000
Total finite and indefinite lives intangible assets, net	9,643,000,000		9,643,000,000		11,219,000,000
Impairment of purchased intangible assets	0	$ 139,000,000	19,000,000	$ 145,000,000
Customer related
Purchased intangible assets with finite lives:
Gross	6,371,000,000		6,371,000,000		6,844,000,000
Accumulated Amortization	(1,076,000,000)		(1,076,000,000)		(829,000,000)
Total purchased intangible assets with finite lives, net	5,295,000,000		5,295,000,000		6,015,000,000
Technology
Purchased intangible assets with finite lives:
Gross	5,347,000,000		5,347,000,000		6,680,000,000
Accumulated Amortization	(1,485,000,000)		(1,485,000,000)		(2,006,000,000)
Total purchased intangible assets with finite lives, net	3,862,000,000		3,862,000,000		4,674,000,000
Trade name
Purchased intangible assets with finite lives:
Gross	525,000,000		525,000,000		553,000,000
Accumulated Amortization	(60,000,000)		(60,000,000)		(49,000,000)
Total purchased intangible assets with finite lives, net	$ 465,000,000		$ 465,000,000		$ 504,000,000