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4. Intangible Assets, Goodwill and Other (Details) (USD $)
 3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Goodwill [Line Items]    
Goodwill $ 530,300,000 $ 523,600,000
Accumulated impairment loss (28,200,000) (28,200,000)
Goodwill, net 502,145,000 495,418,000
Goodwill, Acquired During Period 17,000,000  
Currency fluctuations (10,300,000)  
Life Science [Member]
    
Goodwill [Line Items]    
Goodwill 210,200,000 193,600,000
Accumulated impairment loss (27,200,000) (27,200,000)
Goodwill, net 183,000,000 166,400,000
Goodwill, Acquired During Period 17,000,000  
Currency fluctuations (400,000)  
Clinical Diagnostics [Member]
    
Goodwill [Line Items]    
Goodwill 320,100,000 330,000,000
Accumulated impairment loss (1,000,000) (1,000,000)
Goodwill, net 319,100,000 329,000,000
Goodwill, Acquired During Period 0  
Currency fluctuations $ (9,900,000)