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Income Taxes (Tables)
3 Months Ended
Mar. 31, 2013
Income Taxes [Abstract]  
Schedule Of Effective Income Tax Rate For Continuing Operations
  Percent of Income  
  Before Income Taxes  
  for Continuing Operations  
Three Months Ended March 31 2013   2012  
Income taxexpense at federal statutory rate 35.0   35.0  
State taxes, net of federal income taxbenefit 1.8   .9  
Valuation allowance for foreign operating loss        
carry-forwards 1.8   -  
Non-deductible expenses .6   .3  
Reversal of income taxcontingency accruals and tax        
settlements .6   -  
Unremitted earnings from foreign operations .5   1.7  
Valuation allowance for capital loss carry-forwards (.3 ) 7.8  
Domestic Production Activity Deduction (1.4 ) -  
Foreign rate differences (2.2 ) (2.1 )
Research and development taxcredit (2.7 ) -  
Foreign taxincentive (5.0 ) (8.7 )
Other (.4 ) (.1 )
Effective income taxrate for continuing operations 28.3   34.8