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Stock-based Compensation Plans - Narrative (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Oct. 31, 2015
Oct. 31, 2014
Oct. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Expected Dividend Rate 0.00%    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value $ 13.70 $ 13.81 $ 14.01
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value $ 0.0 $ 12.0 $ 4.0
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 10.53 $ 14.12 $ 14.01
Stock-based compensation $ 9.0 $ 16.0 $ 24.0
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized $ 35.0    
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition 1 year 3 months 18 days    
Employee Service Share-based Compensation, Cash Received from Exercise of Stock Options $ 1.0 19.0 12.0
Deferred Share Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding Number 2,365    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested, Number Of Common Stock Delivered 1    
Share-based Compensation Arrangement by Share-based Payment Award, Accelerated Vesting, Delivery Period of Shares 10 days    
Deferred Fee Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding Number 45,724    
Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years    
Restricted Stock [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Aggregate Grant Date Fair Value $ 1.1 $ 0.1 $ 0.1
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years    
Equity Instruments Other than Options, Grants in Period 2,000 4,000 2,000
Equity Instruments Other than Options, Vested in Period 43,000 4,000 2,000
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 29.50 $ 33.70 $ 34.19
Restricted Stock Units (RSUs) [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Settlement by Cash or Shares, Number 10,000    
Share-based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other than Options, Aggregate Grant Date Fair Value $ 10.0 $ 9.0 $ 10.0
Performance-based Stock Options [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 7 years    
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years    
Equity Instruments Other than Options, Grants in Period 729,000 651,000 299,000
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 27.61 $ 35.83 $ 34.47
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Exercisable, Number 0 0 0
Share-based Compensation Arrangement by Share-based Payment Award, Extended Award Vesting Period 5 years    
Premium Share Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Outstanding Number 46,631    
Cash-Settled Restricted Stock Units [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Equity Instruments Other than Options, Grants in Period 280,000 470,000 3,000
Equity Instruments Other than Options, Vested in Period 190,000 124,000 215,000
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 27.67 $ 32.44 $ 27.24
Employee Service Share-based Compensation, Cash Flow Effect, Cash Used to Settle Awards $ 6.0 $ 5.0 $ 5.0
Plan 2013 [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized     3,665,500
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 1,589,356    
Stock Options Granted Prior to December 2009 [Member] | Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 10 years    
Stock Options Granted After December 2009 [Member] | Employee Stock Option [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period 7 years