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Share-Based Compensation Plans - RSU and Performance Share Activity (Details) - $ / shares
shares in Millions
12 Months Ended
Oct. 31, 2021
Oct. 31, 2020
Oct. 31, 2019
RSUs      
Number of Shares      
Beginning balance (in shares) 1.1    
Granted (in shares) 0.4    
Vested (in shares) (0.5)    
Forfeited (in shares) (0.2)    
Ending balance (in shares) 1.0 1.1  
Weighted-Average Grant Date Fair Value per Share      
Beginning balance (in USD per share) $ 36.32    
Granted (in USD per share) 40.22 $ 36.11 $ 34.48
Vested (in USD per share) 36.34    
Forfeited (in USD per share) 36.56    
Ending balance (in USD per share) $ 38.06 $ 36.32  
Shares withheld for income taxes (in shares) 0.2    
Performance shares      
Number of Shares      
Beginning balance (in shares) 0.8    
Granted (in shares) 0.3    
Vested (in shares) (0.2)    
Performance adjustments (in shares) 0.2    
Forfeited (in shares) (0.1)    
Ending balance (in shares) 1.0 0.8  
Weighted-Average Grant Date Fair Value per Share      
Beginning balance (in USD per share) $ 37.35    
Granted (in USD per share) 39.97 $ 35.92 $ 35.44
Vested (in USD per share) 36.53    
Performance adjustments (in USD per share) 37.63    
Forfeited (in USD per share) 39.22    
Ending balance (in USD per share) $ 38.25 $ 37.35  
Shares withheld for income taxes (in shares) 0.1