Balance Sheet and Other Details - Deferred Revenue (Details) - USD ($) $ in Millions	Jan. 28, 2023	Jul. 30, 2022
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 23,927	$ 23,264
Current	13,109	12,784
Noncurrent	10,818	10,480
Product
Disaggregation of Revenue [Line Items]
Total deferred revenue	10,679	10,427
Service
Disaggregation of Revenue [Line Items]
Total deferred revenue	$ 13,248	$ 12,837