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Supplementary Financial Information - Other Current Liabilities (Details) - USD ($)
$ in Millions
Oct. 31, 2020
Oct. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Sales and marketing programs $ 3,185 $ 3,361
Deferred revenue 1,208 1,178
Employee compensation and benefit 1,194 1,103
Other accrued taxes 1,051 1,060
Warranty 746 663
Operating lease liabilities 275  
Tax liability 223 237
Other 2,960 2,541
Other current liabilities $ 10,842 $ 10,143