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4. Intangible Assets, Goodwill and Other (Details) (USD $)
 9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Goodwill [Line Items]    
Goodwill $ 541,900,000 $ 523,600,000
Accumulated impairment loss (28,200,000) (28,200,000)
Goodwill, net 513,705,000 495,418,000
Goodwill, Acquired During Period 14,900,000  
Currency fluctuations 3,400,000  
Life Science [Member]
    
Goodwill [Line Items]    
Goodwill 208,700,000 193,600,000
Accumulated impairment loss (27,200,000) (27,200,000)
Goodwill, net 181,500,000 166,400,000
Goodwill, Acquired During Period 14,900,000  
Currency fluctuations 200,000  
Clinical Diagnostics [Member]
    
Goodwill [Line Items]    
Goodwill 333,200,000 330,000,000
Accumulated impairment loss (1,000,000) (1,000,000)
Goodwill, net 332,200,000 329,000,000
Goodwill, Acquired During Period 0  
Currency fluctuations $ 3,200,000