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Supplementary Financial Information - Inventory (Details) - USD ($)
$ in Millions
Jul. 31, 2023
Oct. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Finished goods $ 4,171 $ 4,885
Purchased parts and fabricated assemblies 3,026 2,729
Inventory $ 7,197 $ 7,614