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Stock Based Compensation Plans (Omnibus Incentive Plan, Stock Option, Restricted Stock and Deferred Stock Units Narrative) (Details) - USD ($)
3 Months Ended
Jan. 31, 2020
Jan. 31, 2019
Oct. 31, 2019
Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Weighted-average period over which compensation cost related to unvested options is expected to be recognized (in years) 3 years 1 month 6 days    
Restricted Shares [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 $ 182,500,000    
Omnibus Incentive Plan 2013 [Member] | Deferred Stock Units [Member] | Director [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total liability attributable to deferred stock units included as a component of accrued compensation $ 2,600,000   $ 1,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period 18,658    
Cash paid to settle deferred stock unit award liabilities $ 0 $ 500,000  
Parametric Phantom Incentive Plans [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 $ 200,000    
Weighted-average period over which compensation cost related to unvested options is expected to be recognized (in years) 3 years 8 months 12 days