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Stock Based Compensation Plans (Omnibus Incentive Plan, Stock Option, Restricted Stock and Phantom Share Units Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Oct. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Tax benefits recognized for stock-based compensation arrangements   $ 21,700 $ 29,000 $ 24,800
Employee Service Share-based Compensation, Nonvested Awards, Compensation Not yet Recognized, Share-based Awards Other than Options   112,700    
Cash received from exercises of stock options under equity incentive plans   68,400 204,000 103,700
The total intrinsic value of options exercised during the period   65,100 58,900 32,200
Fair value of options vested in the period   21,300    
Compensation cost related to unvested stock options granted under the Company's Omnibus Incentive Plans, not yet recognized   $ 39,600    
Weighted-average period over which compensation cost related to unvested options is expected to be recognized (in years)   2 years 4 months 24 days    
Stock options granted in November 2017   2,400,000    
Grant date fair value of November 2017 stock option grants   $ 45.5    
Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair value of restricted stock that vested during the period     40,500 38,100
Restricted shares granted in November 2017 1,000,000      
Weighted-average period over which compensation cost related to restricted shares is expected to be recognized (in years)   2 years 7 months 6 days    
2013 Omnibus Incentive Plan [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   25,500,000    
2013 Omnibus Incentive Plan [Member] | Employee Stock Option [Member] | Non-Voting Common Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period   5 years    
Option expiration period   10 years    
Restricted stock issued under plan   7,200,000    
Stock options issued under plan   12,600,000    
Cumulative shares of EVC Non-Voting Common Stock issued under 2013 Plan to settle phantom incentive units   22,654    
2013 Omnibus Incentive Plan [Member] | Restricted Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Fair value of restricted stock that vested during the period   $ 47,200 40,500 $ 38,100
Restricted shares granted in November 2017   1,500,000    
Grant date fair value of November 2017 restricted stock grants   $ 45.5    
2013 Omnibus Incentive Plan [Member] | Restricted Stock [Member] | Non-Voting Common Stock [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period   5 years    
2013 Omnibus Incentive Plan [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   $ 1,300 $ 700  
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period   17,760    
2013 Omnibus Incentive Plan [Member] | Deferred Stock Units [Member] | Non-Voting Common Stock [Member] | Director [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period   2 years