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Supplementary Financial Information - Other Current Assets (Details) - USD ($)
$ in Millions
Apr. 30, 2022
Oct. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Prepaid and other current assets $ 1,839 $ 1,092
Supplier and other receivables 1,761 2,333
Value-added taxes receivable 1,089 1,005
Other current assets $ 4,689 $ 4,430