Stockholders' Equity And Stock-Based Compensation (Stock Repurchase Authorizations) (Details) (USD $) In Thousands, unless otherwise specified	1 Months Ended	60 Months Ended	1 Months Ended
	Nov. 30, 2009	Oct. 31, 2014	Oct. 31, 2014	Feb. 29, 2012	Jul. 31, 2011	Jul. 31, 2010
Equity, Class of Treasury Stock [Line Items]
Authorization Amount	$ 250,000	$ 1,100,000
Additional Stock Approved [Member]
Equity, Class of Treasury Stock [Line Items]
Authorization Amount			$ 200,000	$ 100,000	$ 250,000	$ 300,000