Acquisitions - Summary of Preliminary Allocation of Purchase Consideration (Details) - USD ($) $ in Millions	Jul. 26, 2025	Jul. 27, 2024	Mar. 18, 2024	Jul. 29, 2023
Business Combination [Line Items]
Goodwill	$ 59,136	$ 58,660		$ 38,535
Splunk
Business Combination [Line Items]
Cash and cash equivalents			$ 2,422
Investments			285
Accounts receivable, net			623
Goodwill			19,301
Purchased intangible assets			10,550
Deferred tax assets			1,308
Other current and noncurrent assets			1,176
Accounts payable			(39)
Accrued compensation			(337)
Current portion of deferred revenue			(1,768)
Splunk convertible notes			(3,344)
Deferred tax liabilities			(2,523)
Noncurrent portion of deferred revenue			(86)
Other current and other noncurrent liabilities			(478)
Total			$ 27,090