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Summary of Significant Accounting Policies (Details 2) (USD $)
In Thousands
6 Months Ended
Jun. 30, 2011
Jun. 30, 2011
North American Physical Business
Jun. 30, 2011
International Physical Business
Jun. 30, 2011
Europe
Dec. 31, 2010
Europe
Jun. 30, 2011
Latin America
Dec. 31, 2010
Latin America
Jun. 30, 2011
Australia
Dec. 31, 2010
Australia
Goodwill                  
Segment reporting information, goodwill $ 2,358,129 $ 1,759,246 $ 598,883 $ 503,410 $ 440,920 $ 30,684 $ 29,787 $ 64,789 $ 61,010
Carrying value of goodwill by operating segment                  
Balance, beginning of period 2,282,137 1,750,420 531,717 503,410 440,920 30,684 29,787 64,789 61,010
Deductible goodwill acquired during the period 1,384 1,384              
Non-deductible goodwill acquired during the year 35,207   35,207            
Fair value and other adjustments (1,289) 161 (1,450)            
Currency effects 40,690 7,281 33,409            
Balance, end of period 2,358,129 1,759,246 598,883 503,410 440,920 30,684 29,787 64,789 61,010
Fair value and other adjustments, related to property, plant and equipment, net customer relationships and deferred income taxes (1,347)                
Cash paid related to prior year's acquisitions $ 58