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Supplemental Financial Information (Other Current Liabilities) (Details) - USD ($)
$ in Millions
Jul. 31, 2022
Oct. 31, 2021
Other Liabilities, Current [Abstract]    
Contract liabilities $ 3,297 $ 2,619
Tax liabilities 471 541
Other Accrued Liabilities, Current 839 679
Total other current liabilities $ 4,607 $ 3,839