Stock Repurchase Program and Cash Dividend (Details Textual) - shares	3 Months Ended
	Jan. 31, 2018	Jan. 31, 2017	Dec. 13, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired	4,427,000	557,000
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
May 2016 repurchase progam [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury Stock, Shares, Acquired	3,100,000