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Income Taxes (Schedule Of Effective Income Tax Rate For Continuing Operations) (Details)
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Income Taxes [Abstract]    
Income tax expense at federal statutory rate 35.00% 35.00%
Valuation allowance for capital loss carry-forwards 6.10% 0.30%
Unremitted earnings from foreign operations 1.10% 1.40%
State taxes, net of federal income tax benefit 1.00% 1.60%
Non-deductible expenses 0.20% 0.70%
Income tax contingency accruals/reversals   0.60%
Research and development tax credit   (0.70%)
Domestic production activities deduction (0.30%) (0.50%)
Valuation allowance for foreign operating loss carry-forwards (0.40%) (1.10%)
Foreign rate differences (3.60%) (3.70%)
Foreign tax incentives (7.40%)  
Other (0.50%) 0.10%
Effective income tax rate for income from continuing operations 31.20% 33.70%