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Reclassification Adjustments Out of Accumulated Other Comprehensive Loss, Reclassifications (Details) (USD $)
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Amount Reclassified From Accumulated Other Comprehensive Loss [Line Items]    
Income tax $ 4,180,000 $ 27,412,000
Cost of services and products 559,892,000 509,211,000
Selling, general and administrative 486,903,000 507,599,000
Amount reclassified from accumulated other comprehensive loss | Retirement plan
   
Amount Reclassified From Accumulated Other Comprehensive Loss [Line Items]    
Amounts reclassified from accumulated other comprehensive loss to operating expenses (200,000)  
Income tax (100,000)  
Cost of services and products (200,000)  
Selling, general and administrative $ (100,000)