Stockholders' Equity (Details) (USD $)	1 Months Ended	12 Months Ended
	Mar. 31, 2003	Oct. 31, 2011	Oct. 31, 2010	Oct. 31, 2009
Treasury Stock Note Disclosure [Abstract]
Purchase of treasury stock, shares		3,068,000	31,000	79,000
Treasury stock, shares		2,946,000	5,000
Average price per share		$ 16.00	$ 19.24	$ 18.70
Remaining authorization at October 31:		8,786,000	11,855,000	11,855,000
Stockholders Equity (Textual) [Abstract]
Common Stock, Shares Authorized		400,000,000
Par value per common share		$ 0.01
Preferred Stock, Shares Authorized		15,000,000
Par value per preferred share		$ 0.01
Common shares issued and outstanding		165,700,000
Common stock reserved for outstanding stock options and restricted stock units		13,700,000
Common stock reserved for future stock option and award issuances		6,700,000
Common stock reserved for issuance under the Company's employee stock purchase plan		600,000
Restricted common stock issued pursuant to stock incentive plans		1,250	1,250	1,250
Unvested restricted stock awards		1,875
Authorization to repurchase shares	up to 20 million shares
Rights issued pursuant to 2007 Rights Plan, Description		Rights 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, 2011.
Percentage of ownership of Company's common stock for restricts certain transfers		4.95%