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Supplemental Financial Information (Other Current Liabilities) (Details) - USD ($)
$ in Millions
Jan. 31, 2021
Nov. 01, 2020
Other Liabilities, Current [Abstract]    
Contract liabilities $ 3,098 $ 2,620
Taxes Payable, Current 562 440
Other (miscellaneous) 778 771
Total other current liabilities $ 4,438 $ 3,831