Balance Sheet and Other Details - Deferred Revenue (Details) - USD ($) $ in Millions	Apr. 27, 2024	Jul. 29, 2023
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 27,475	$ 25,550
Current	15,751	13,908
Noncurrent	11,724	11,642
Product
Disaggregation of Revenue [Line Items]
Total deferred revenue	12,856	11,505
Service
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 14,619	$ 14,045