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Balance Sheet and Other Details - Inventories (Details) - USD ($)
$ in Millions
Jan. 27, 2024
Jul. 29, 2023
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials $ 1,784 $ 1,685
Work in process 165 264
Finished goods 1,047 1,493
Service-related spares 200 186
Demonstration systems 13 16
Total $ 3,209 $ 3,644