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Stockholders' Equity And Stock-Based Compensation (Stock Repurchase Authorizations) (Details) - USD ($) $ in Thousands | Jan. 01, 2016 | Oct. 31, 2014 | Feb. 29, 2012 | Jul. 31, 2011 | Jul. 31, 2010 | Nov. 30, 2009
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Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Authorization Amount | $ 1,100,000 |  |  |  |  | $ 250,000
Additional Stock Approved [Member] |  |  |  |  |  |
Equity, Class of Treasury Stock [Line Items] |  |  |  |  |  |
Authorization Amount |  | $ 200,000 | $ 100,000 | $ 250,000 | $ 300,000 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of stock repurchase plan authorized. + References No definition available. + Details
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