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Supplemental Financial Information (Supplemental Cash Flow) (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Jul. 31, 2022
Aug. 01, 2021
Jul. 31, 2022
Aug. 01, 2021
Supplemental Cash Flow Elements [Abstract]        
Cash paid for interest $ 290 $ 253 $ 989 $ 994
Cash paid for income taxes $ 231 $ 167 $ 657 $ 607