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Segment Data (Details Textual) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Segment Reporting Information [Line Items]      
Long-lived assets $ 1,207.3 $ 1,213.8 $ 1,221.7
Segment Data (Numeric) [Abstract]      
Share of revenue from other healthcare related services Less than 1 percentage    
Net Sales 2,263.7 2,277.2 2,237.5
Share of revenue from an individual country in net sales Less than 10 percentage    
Switzerland [Member]
     
Segment Reporting Information [Line Items]      
Long-lived assets $ 233.2