Goodwill and Purchased Intangible Assets - Schedule of Intangible Assets Acquired Through Business Combinations (Details) $ in Millions	12 Months Ended
	Jul. 29, 2023 USD ($) acquisition	Jul. 30, 2022 USD ($) acquisition	Jul. 31, 2021 acquisition
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Number of business combinations (acquisition) | acquisition	5	3	13
Total intangible assets acquired	$ 150	$ 20
IPR&D
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Indefinite-lived intangible assets acquired	$ 0	$ 0
TECHNOLOGY
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)	3 years 8 months 12 days	2 years 8 months 12 days
Finite lived intangible assets acquired	$ 138	$ 16
CUSTOMER RELATIONSHIPS
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)	1 year 9 months 18 days	2 years
Finite lived intangible assets acquired	$ 12	$ 4