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Supplemental Financial Information (Supplemental Cash Flow) (Details) - USD ($)
$ in Millions
3 Months Ended
Jan. 31, 2021
Feb. 02, 2020
Supplemental Cash Flow Elements [Abstract]    
Cash paid for interest $ 372 $ 381
Cash paid for income taxes 147 131
Capital expenditures incurred but not yet paid $ 46 $ 46