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Stockholders' Equity (Details Textual) - $ / shares
1 Months Ended 12 Months Ended
Dec. 11, 2019
Dec. 31, 2019
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
May 23, 2016
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common Stock, Shares Authorized     400,000,000      
Common Stock, Par or Stated Value Per Share     $ 0.01      
Preferred Stock, Shares Authorized     15,000,000      
Preferred Stock, Par or Stated Value Per Share     $ 0.01      
Common Stock, Shares, Outstanding     140,900,000      
Common Stock Reserved for Outstanding Stock Options and Restricted Stock Units     6,700,000      
Preferred Stock, Shares Issued     0 0    
Common Stock, Dividends, Per Share, Declared     $ 0.44 $ 0.41    
Treasury Stock, Shares, Acquired     6,619,000 12,108,000 7,694,000  
Treasury Stock Acquired, Average Cost Per Share     $ 35.28 $ 41.56 $ 37.81  
Percentage of Ownership of Company's Common Stock for Restricts Certain Transfers     4.95%      
Subsequent Event [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common Stock, Dividends, Per Share, Declared $ 0.11          
Treasury Stock, Shares, Acquired   3,600,000        
Treasury Stock Acquired, Average Cost Per Share   $ 39.58        
Share-based Payment Arrangement, Option [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Common Stock, Capital Shares Reserved for Future Issuance     7,700,000      
May 2016 Repurchase Program [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Authorization to repurchase shares           20,000,000
December 2019 Repurchase Program [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Authorization to repurchase shares     20,000,000