Acquisitions - Summary of Allocation of Total Purchase Consideration (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 18, 2024	Jul. 27, 2024	Jul. 29, 2023	Jul. 30, 2022
Business Acquisition [Line Items]
Total purchase consideration			$ 315	$ 364
Net Tangible Assets Acquired (Liabilities Assumed)			(18)
Purchased Intangible Assets		$ 11,050	150
Goodwill			$ 183
Splunk
Business Acquisition [Line Items]
Cash paid for outstanding Splunk common stock	$ 26,950
Fair value of converted Splunk equity awards attributable to pre-acquisition services	137
Settlement of pre-existing relationships	3
Total purchase consideration	$ 27,090
Purchased Intangible Assets		10,550
Acquisitions
Business Acquisition [Line Items]
Total purchase consideration		1,370
Net Tangible Assets Acquired (Liabilities Assumed)		(47)
Purchased Intangible Assets		500
Goodwill		$ 917