Acquisitions - Summary of Allocation of Total Purchase Consideration (Details) - USD ($) $ in Millions		12 Months Ended
	Mar. 18, 2024	Jul. 26, 2025	Jul. 27, 2024	Jul. 29, 2023
Business Combination [Line Items]
Purchase Consideration			$ 28,460
Net Tangible Assets Acquired (Liabilities Assumed)			(2,808)
Purchased Intangible Assets		$ 121	11,050
Goodwill			20,218
Splunk
Business Combination [Line Items]
Purchase Consideration	$ 27,090		27,090
Net Tangible Assets Acquired (Liabilities Assumed)			(2,761)
Purchased Intangible Assets			10,550
Goodwill			19,301
Acquisitions
Business Combination [Line Items]
Purchase Consideration		293	1,370	$ 315
Net Tangible Assets Acquired (Liabilities Assumed)		(21)	(47)	(18)
Purchased Intangible Assets		121	500	150
Goodwill		$ 193	$ 917	$ 183