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Income Taxes (Schedule Of Effective Income Tax Rate For Continuing Operations) (Details)
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Income Taxes [Abstract]    
Income tax expense at federal statutory rate 35.00% 35.00%
State taxes, net of federal income tax benefit 1.80% 0.90%
Valuation allowance for foreign operating loss carry-forwards 1.80%  
Non-deductible expenses 0.60% 0.30%
Reversal of income tax contingency accruals and tax settlements 0.60%  
Unremitted earnings from foreign operations 0.50% 1.70%
Valuation allowance for capital loss carry-forwards (0.30%) 7.80%
Domestic Production Activities Deduction (1.40%)  
Foreign rate differences (2.20%) (2.10%)
Research and development tax credit (2.70%)  
Foreign tax incentive (5.00%) (8.70%)
Other (0.40%) (0.10%)
Effective income tax rate for continuing operations 28.30% 34.80%