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Stock-based Compensation Plans - Schedule of Option Exercise Prices (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Oct. 31, 2017
Oct. 31, 2016
Oct. 31, 2015
Oct. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 2,408 2,835 2,886 3,657
Options, Exercisable, Number 2,073 2,695 2,407  
Exercise Price Range From $ 21.22 To $ 31.81 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Exercise Price Range, Number of Outstanding Options 927      
Stock Options Weighted Average Remaining Contractual Life 4.5      
Exercise Price Range, Outstanding Options, Weighted Average Exercise Price $ 27.70      
Options, Outstanding, Intrinsic Value $ 14      
Exercise Price Range, Number of Exercisable Options 603      
weighted average reamining contractual term 2.1      
Exercise Price Range, Exercisable Options, Weighted Average Exercise Price $ 28.27      
Options, Exercisable, Intrinsic Value $ 9      
Exercise Price Range From $ 32.18 To $ 40.92 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Exercise Price Range, Number of Outstanding Options 841      
Stock Options Weighted Average Remaining Contractual Life 1.5      
Exercise Price Range, Outstanding Options, Weighted Average Exercise Price $ 37.09      
Options, Outstanding, Intrinsic Value $ 5      
Exercise Price Range, Number of Exercisable Options 830      
weighted average reamining contractual term 1.5      
Exercise Price Range, Exercisable Options, Weighted Average Exercise Price $ 37.09      
Options, Exercisable, Intrinsic Value $ 5      
Exercise Price Range From $ 42.48 To $ 69.91 [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Exercise Price Range, Number of Outstanding Options 640      
Stock Options Weighted Average Remaining Contractual Life .5      
Exercise Price Range, Outstanding Options, Weighted Average Exercise Price $ 57.16      
Options, Outstanding, Intrinsic Value $ 0      
Exercise Price Range, Number of Exercisable Options 640      
weighted average reamining contractual term .5      
Exercise Price Range, Exercisable Options, Weighted Average Exercise Price $ 57.16      
Options, Exercisable, Intrinsic Value $ 0