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Income Taxes (Narrative) (Details) In Thousands, unless otherwise specified | 12 Months Ended |  | 12 Months Ended | 0 Months Ended | 1 Months Ended | 0 Months Ended
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 USD ($) | Dec. 31, 2011 USD ($) | Dec. 31, 2013 USD ($) | Dec. 31, 2013 Undistributed Foreign Earnings [Member] USD ($) | Dec. 31, 2013 State [Member] USD ($) | Dec. 31, 2013 Foreign Subsidiary and State Net Operating Losses and Tax Credits [Member] USD ($) | Dec. 31, 2013 State Deferred Tax Assets [Member] USD ($) | Dec. 31, 2013 Operating Loss Carryforward, Foreign Jurisdiction [Member] USD ($) | Jan. 30, 2013 BELGIUM Foreign Tax Authority [Member] EUR (€) | Jan. 31, 2012 BELGIUM 2008 Assessment[Member] Foreign Tax Authority [Member] EUR (€) | Dec. 28, 2012 BELGIUM 2005 Assessment [Member] Foreign Tax Authority [Member] EUR (€) | Dec. 28, 2012 BELGIUM 2009 Assessment [Member] Foreign Tax Authority [Member] EUR (€) | Dec. 28, 2012 BELGIUM Two Thousand and Six [Member] Foreign Tax Authority [Member] EUR (€) | Dec. 28, 2012 BELGIUM Two Thousand and Seven [Member] Foreign Tax Authority [Member] EUR (€) | Dec. 28, 2012 BELGIUM Two Thousand and Ten [Member] Foreign Tax Authority [Member] EUR (€)
Income Taxes [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Valuation allowance against deferred tax asset | $ (321,585) | $ (334,215) | $ (375,859) |  |  |  |  |  |  |  |  |  |  |  |
Change in the valuation allowance | 12,630 | 9,088 |  |  |  | (54,274) | (37,115) | (248,055) |  |  |  |  |  |  |
Foreign currency translation | 5,863 | 7,040 | (12,471) |  |  |  |  |  |  |  |  |  |  |  |
Net operating loss carryforwards and tax credit | 247,786 |  | 438,272 |  | 51,928 |  |  |  |  |  |  |  |  |  |
Net operating loss carryforwards in various foreign jurisdictions |  |  | 386,344 |  |  |  |  |  |  |  |  |  |  |  |
Federal income taxes on earnings |  |  |  | 1,200,000 |  |  |  |  |  |  |  |  |  |  |
Foreign tax assessment |  |  |  |  |  |  |  |  |  | 23,789 | 46,135 | 35,567 | 38,817 | 39,635 | 43,117
Interest Tax Examination, Refund, Interest Income |  |  |  |  |  |  |  |  | 1,583 |  |  |  |  |  |
Gross unrecognized tax benefits | 53,835 | 46,087 | 56,545 |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized tax benefits that would impact effective tax rate |  |  | 37,732 |  |  |  |  |  |  |  |  |  |  |  |
Interest and penalties | 5,874 |  | 13,890 |  |  |  |  |  |  |  |  |  |  |  |
Accrued/(reversed) interest and penalties | (1,585) | (3,755) | 74 |  |  |  |  |  |  |  |  |  |  |  |
Expected decrease in unrecognized tax benefits within next twelve months |  |  | $ 4,315 |  |  |  |  |  |  |  |  |  |  |  |

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