Stockholders' Equity (Details) (USD $) In Thousands, except Share data, unless otherwise specified	12 Months Ended
	Oct. 31, 2014	Oct. 31, 2013	Oct. 31, 2012	Nov. 07, 2013	Sep. 05, 2012	Mar. 31, 2003	Dec. 16, 2014
Subsequent Event [Line Items]
Authorization to repurchase shares						20,000,000
Rights Issued Pursuant to Rights Plan Description	The rights issued pursuant to the 2007 Rights Plan will become exercisable upon the earlier of (i) 10 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 our common stock, or (ii) 10 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, 2014.
Percentage of Ownership of Company's Common Stock for Restricts Certain Transfers	4.95%
Share Repurchase Program
Number of shares purchased	2,947,000	498,000	20,000
Average price per share	$ 30.80	$ 30.90	$ 25.62
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	5,321,000	8,268,000	8,766,000
Stockholders' Equity (Textual) [Abstract]
Common Stock, Shares Authorized	400,000,000
Common Stock, Par or Stated Value Per Share	$ 0.01
Preferred Stock, Shares Authorized	15,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01
Common Stock, Shares, Outstanding	175,000,000
Common Stock Reserved for Outstanding Stock Options and Restricted Stock Units	10,600,000
Common Stock, Capital Shares Reserved for Future Issuance	8,800,000
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	500,000
Preferred Stock, Shares Issued	0	0
Stock Issued During Period, Shares, New Issues	7,200,000
Sale of Stock, Price Per Share				$ 32.00
Proceeds from Issuance of Common Stock	$ 220,365
Authorization to repurchase shares						20,000,000
Subsequent Event [Member]
Subsequent Event [Line Items]
Authorization to repurchase shares							20,000,000
Stockholders' Equity (Textual) [Abstract]
Authorization to repurchase shares							20,000,000