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Stock-based Compensation Plans - Schedule of Stock Based Compensation Other than Options (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Millions
12 Months Ended
Oct. 31, 2020
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2016
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate 0.00%      
Share-based Payment Arrangement, Expense $ 11.0 $ 17.0 $ 17.0  
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount $ 5.0      
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition 1 year      
Proceeds from exercise of stock options $ 4.0 $ 4.0 $ 8.0  
Market-based Stock Options [Member] [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Equity Instruments Other than Options, Nonvested, Number 200 387 431  
Equity Instruments Other than Options, Vested in Period (200)   (186) (44)
Equity Instruments Other than Options, Forfeited in Period 0 (1) 0  
Equity Instruments Other than Options, Nonvested, Number 0 200 387  
Equity Instruments Other Than Options, Exercisable, Number 0 200 387  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other Than Options, Exercisable, Weighted Average Grant Date Fair Value $ 0 $ 27.24 $ 27.24  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value 27.24 27.24 27.24  
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value 27.24   27.24 $ 27.24
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value 0 27.24 0  
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 0 $ 27.24 $ 27.24  
Share-Settled Restricted Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Equity Instruments Other than Options, Nonvested, Number 476 502 619  
Equity Instruments Other than Options, Grants in Period (21) (178) (168)  
Equity Instruments Other than Options, Vested in Period (181) (194) (214)  
Equity Instruments Other than Options, Forfeited in Period (9) (10) (71)  
Equity Instruments Other than Options, Nonvested, Number 307 476 502  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 33.82 $ 25.01 $ 15.04  
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value 36.36 34.93 40.05  
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value 28.36 11.84 9.59  
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value 35.70 38.24 20.24  
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 37.16 $ 33.82 $ 25.01  
Performance-based Stock Options [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Equity Instruments Other than Options, Nonvested, Number 123 152 599  
Equity Instruments Other than Options, Vested in Period 42 29 13  
Equity Instruments Other than Options, Forfeited in Period 0 0 (434)  
Equity Instruments Other than Options, Nonvested, Number 81 123 152  
Equity Instruments Other Than Options, Exercisable, Number 81 123 152  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Exercisable, Weighted Average Exercise Price $ 27.67 $ 27.67 $ 27.59  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value 27.67 27.59 27.59  
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value 27.67 27.23 27.67  
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value 0 0 27.59  
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 27.67 $ 27.67 $ 27.59  
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   $ 0.1    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Equity Instruments Other than Options, Nonvested, Number 0 0 0  
Equity Instruments Other than Options, Grants in Period 0 (5) (4)  
Equity Instruments Other than Options, Vested in Period 0 (5) (4)  
Equity Instruments Other than Options, Nonvested, Number 0 0 0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 0 $ 0 $ 0  
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value 0 32.30 34.97  
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value 0 32.30 34.97  
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 0 $ 0 $ 0  
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period 3 years      
Cash-Settled Restricted Stock Units [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Equity Instruments Other than Options, Nonvested, Number 385 428 587  
Equity Instruments Other than Options, Grants in Period 0 (226) (187)  
Equity Instruments Other than Options, Vested in Period (188) (230) (319)  
Equity Instruments Other than Options, Forfeited in Period (21) (39) (27)  
Equity Instruments Other than Options, Nonvested, Number 176 385 428  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 35.07 $ 28.58 $ 18.02  
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value 0 34.97 40.12  
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value 33.69 22.89 16.42  
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value 35.68 34.99 22.76  
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 36.47 $ 35.07 $ 28.58  
Share-based Payment Arrangement, Cash Used to Settle Award $ 7.0 $ 8.0 $ 13.0  
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, Aggregate Grant Date Fair Value $ 11.0 $ 8.0 $ 7.0  
Service and Performance Measures [Member] | Cash-settled Performance-based Stock Unit [Member]        
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]        
Equity Instruments Other than Options, Nonvested, Number 0 0 220  
Equity Instruments Other than Options, Grants in Period 0 0 0  
Equity Instruments Other than Options, Vested in Period 0 0 121  
Equity Instruments Other than Options, Forfeited in Period 0 0 (99)  
Equity Instruments Other than Options, Nonvested, Number 0 0 0  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Abstract]        
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 0 $ 0 $ 27.59  
Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value 0 0 0  
Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value 0 0 27.59  
Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value 0 0 27.59  
Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value $ 0 $ 0 $ 0