Goodwill and Purchased Intangible Assets - Schedule of Intangible Assets Acquired Through Business Combinations (Details) $ in Millions	12 Months Ended
	Jul. 30, 2022 USD ($) acquisition	Jul. 31, 2021 USD ($) acquisition	Jul. 25, 2020 acquisition
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Number of business combinations (acquisition) | acquisition	3		6
Total intangible assets acquired	$ 20	$ 2,914
Acacia
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Total intangible assets acquired		$ 2,160
Others
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Number of business combinations (acquisition) | acquisition		12
Total intangible assets acquired		$ 754
IPR&D
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Indefinite-lived intangible assets acquired	$ 0	345
IPR&D | Acacia
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Indefinite-lived intangible assets acquired		345
IPR&D | Others
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Indefinite-lived intangible assets acquired		0
TECHNOLOGY
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)	2 years 8 months 12 days
Finite lived intangible assets acquired	$ 16	$ 1,835
TECHNOLOGY | Acacia
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)		4 years
Finite lived intangible assets acquired		$ 1,290
TECHNOLOGY | Others
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)		4 years 3 months 18 days
Finite lived intangible assets acquired		$ 545
CUSTOMER RELATIONSHIPS
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)	2 years
Finite lived intangible assets acquired	$ 4	$ 664
CUSTOMER RELATIONSHIPS | Acacia
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)		4 years
Finite lived intangible assets acquired		$ 490
CUSTOMER RELATIONSHIPS | Others
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)		4 years 7 months 6 days
Finite lived intangible assets acquired		$ 174
OTHER
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Finite lived intangible assets acquired	$ 0	$ 70
OTHER | Acacia
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)		3 years 1 month 6 days
Finite lived intangible assets acquired		$ 35
OTHER | Others
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)		2 years 10 months 24 days
Finite lived intangible assets acquired		$ 35