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Supplementary Financial Information - Other Current Liabilities (Details) - USD ($)
$ in Millions
Apr. 30, 2021
Oct. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Sales and marketing programs $ 3,342 $ 3,185
Employee compensation and benefit 1,385 1,194
Deferred revenue 1,265 1,208
Other accrued taxes 1,066 1,051
Warranty 774 746
Operating lease liabilities 308 275
Tax liability 255 223
Other 3,184 2,960
Other accrued liabilities $ 11,579 $ 10,842