Stockholders' Equity (Details) (USD $)	3 Months Ended	12 Months Ended
	Oct. 31, 2012	Oct. 31, 2012	Oct. 31, 2011	Oct. 31, 2010	Sep. 05, 2012	Mar. 31, 2003
Stock Repurchase Program [Abstract]
Rights Issued Pursuant to Rights Plan Description		The rights issued pursuant to the 2007 Rights Plan will become exercisable upon the earlier of (i) ten days following a public announcement that a person or group of affiliated or associated persons has acquired, or obtained the right to acquire, beneficial ownership of 15% or more of the outstanding shares of the Company’s common stock or (ii) ten business days following the commencement of a tender offer or exchange offer that would result in a person or group beneficially owning 15% or more of the outstanding shares of common stock. No rights were exercisable at October 31, 2012.
Percentage of Ownership of Company's Common Stock for Restricts Certain Transfers		4.95%
Share Repurchase Program
Number of shares purchased		20,000	3,068,000	31,000
Average price per share		$ 25.62	$ 16.00	$ 19.24
Remaining authorization at October 31:	8,766,000	8,766,000	8,786,000	11,855,000		20,000,000
Stockholders' Equity (Textual) [Abstract]
Common Stock, Shares Authorized	400,000,000	400,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	15,000,000	15,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares, Outstanding	168,600,000	168,600,000
Treasury Stock, Shares	53,000	53,000	2,946,000
Common Stock Reserved for Outstanding Stock Options and Restricted Stock Units	11,700,000	11,700,000
Common Stock, Capital Shares Reserved for Future Issuance	5,500,000	5,500,000
Additional common share if convertible debt exchanged	5,900,000
Debt Instrument, Interest Rate, Stated Percentage					0.50%
Shares Held in Employee Stock Option Plan, Committed-to-be-Released	600,000	600,000
Preferred Stock, Shares Issued	0	0	0
Stock Issued During Period, Shares, Restricted Stock Award, Gross		1,350	1,250	1,250
Unvested Restricted Stock Awards	1,975	1,975
Authorization to repurchase shares	8,766,000	8,766,000	8,786,000	11,855,000		20,000,000