Goodwill and Purchased Intangible Assets - Schedule of Intangible Assets Acquired Through Business Combinations (Details) $ in Millions	6 Months Ended
	Jan. 29, 2022 USD ($) acquisition
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Number of acquisitions | acquisition	2
Total, amount	$ 16
IPR&D
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Indefinite lives, amount	$ 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 6 months
Finite lives, amount	$ 12
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 lives, amount	$ 4
OTHER
Schedule Of Finite Lived And Indefinite Lived Intangible Assets Acquired Through Business Combinations [Line Items]
Weighted- Average Useful Life (in Years)	0 years
Finite lives, amount	$ 0