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Stock Based Compensation Plans (Omnibus Incentive Plan, Stock Option, Restricted Stock and Phantom Share Units Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 10 years    
Option expiration period 5 years    
Deferred Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period 5 years    
Omnibus Incentive Plan 2013 [Member] | Non-Voting Common Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock reserved for future issuance under the plan, current 34,500,000    
Restricted stock issued under plan 9,400,000    
Stock options issued under plan 15,000,000.0    
Cumulative Shares Issued 100,000    
Omnibus Incentive Plan 2013 [Member] | Deferred Stock Units [Member] | Director [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options $ 1.7 $ 1.3  
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 19,758    
Cash paid to settle deferred stock unit award liabilities $ 0.5 $ 0.4 $ 0.4