Stock Issuance and Stock Repurchase Program (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Nov. 30, 2013	Jul. 31, 2015	Jul. 31, 2014	Jul. 31, 2015	Jul. 31, 2014	Dec. 16, 2014	Nov. 07, 2013	Mar. 31, 2003
Stock Issuance and Stock Repurchase Program (Textual) [Abstract]
Stock Issued During Period, Shares, New Issues	7,200
Common Stock, Par or Stated Value Per Share		$ 0.01		$ 0.01
Sale of Stock, Price Per Share							$ 32.00
Proceeds from Issuance of Common Stock					$ 220,365
Stock Repurchase Program, Number of Shares Authorized to be Repurchased						20,000		20,000
Share Repurchase Program
Number of shares purchased		3	5	214	10
Average price per share		$ 37.64	$ 35.42	$ 31.50	$ 35.03
Remaining authorization at July 31:		19,986	8,258	19,986	8,258