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Balance Sheet and Other Details - Deferred Revenue (Details) - USD ($) $ in Millions	Jul. 29, 2023	Jul. 30, 2022
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 25,550	$ 23,264
Current	13,908	12,784
Noncurrent	11,642	10,480
Product
Disaggregation of Revenue [Line Items]
Deferred revenue	11,505	10,427
Service
Disaggregation of Revenue [Line Items]
Deferred revenue	$ 14,045	$ 12,837

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