Balance Sheet and Other Details - Deferred Revenue (Details) - USD ($) $ in Millions	Oct. 26, 2024	Jul. 27, 2024
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 27,502	$ 28,475
Current	15,615	16,249
Noncurrent	11,887	12,226
Product
Disaggregation of Revenue [Line Items]
Total deferred revenue	12,941	13,219
Services
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 14,561	$ 15,256