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Valuation And Qualifying Accounts (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period $ 322,589 $ 289,977 $ 261,185
Additions 94,264 109,012 63,523
Deductions (27,874) (30,719) (25,248)
Translation (57,742) (45,681) (9,483)
Balance at end of period 331,237 322,589 289,977
Allowance for Doubtful Accounts [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 9,373 5,098 4,023
Additions 6,656 6,567 2,687
Deductions (2,615) (800) (1,473)
Translation (646) (1,492) (139)
Balance at end of period 12,768 9,373 5,098
Valuation Allowance of Deferred Tax Assets [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 301,012 270,057 236,563
Additions 49,879 76,085 43,563
Deductions (401) (4,389) (3,942)
Translation (52,599) (40,741) (6,127)
Balance at end of period 297,891 301,012 270,057
Provision For Contingencies [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Balance at beginning of period 12,204 14,822 20,599
Additions 37,729 26,360 17,273
Deductions (24,858) (25,530) (19,833)
Translation (4,497) (3,448) (3,217)
Balance at end of period 20,578 12,204 14,822
Legal Reserve Accrual [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Additions 37,729 26,360 17,273
Legal Reserve Settlements [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Deductions (23,415) (23,101) (18,876)
Legal Reserve Reclassifications [Member]      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Deductions $ (1,443) $ (2,429) $ (957)