XML 78 R67.htm IDEA: XBRL DOCUMENT v3.19.1
Stock Repurchase Program and Cash Dividend (Details Textual) - $ / shares
1 Months Ended 3 Months Ended 6 Months Ended
Jun. 05, 2019
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2019
Apr. 30, 2018
Oct. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Treasury Stock, Shares, Acquired   3,000 1,794,000 788,000 6,221,000  
Treasury Stock Acquired, Average Cost Per Share   $ 36.95 $ 45.44 $ 32.04 $ 46.86  
Dec 2017 Repurchase Program [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock Repurchase Program, Number of Shares Authorized to be Repurchased           20,000,000
December 2018 Repurchase Program [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Stock Repurchase Program, Number of Shares Authorized to be Repurchased   20,000,000   20,000,000    
Subsequent Event [Member]            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]            
Treasury Stock, Shares, Acquired 2,500,000          
Treasury Stock Acquired, Average Cost Per Share $ 35.70