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4. Goodwill and other Purchased Intangible Assets Intangible Assets, Goodwill and Other (Details) (USD $)
 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2012
Life Science [Member]
Dec. 31, 2012
Life Science [Member]
Dec. 31, 2011
Life Science [Member]
Dec. 31, 2012
Clinical Diagnostics [Member]
Dec. 31, 2012
Clinical Diagnostics [Member]
Dec. 31, 2011
Clinical Diagnostics [Member]
Dec. 31, 2012
QuantaLife [Member]
Oct. 04, 2011
QuantaLife [Member]
Oct. 04, 2011
QuantaLife [Member]
Life Science [Member]
Goodwill [Line Items]                          
Gain (loss) on sale of property, plant and equipment - Diagnostics               $ 4,300,000          
Business Acquisition, Purchase Price Allocation, Goodwill Amount                         105,500,000
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets                       94,700,000  
Goodwill [Roll Forward]                          
Goodwill period start   496,100,000 391,200,000     176,800,000 70,700,000   319,300,000 320,500,000      
Accumulated impairment loss period start   (27,200,000) (27,200,000)     (27,200,000) (27,200,000)   0 0      
Goodwill, net period start   468,933,000 364,000,000     149,600,000 43,500,000   319,300,000 320,500,000      
Goodwill, Acquired During Period   21,500,000 106,100,000     17,400,000 106,100,000   4,100,000 0      
Goodwill, Purchase Accounting Adjustments   (600,000) 0     (600,000) 0   0 0 (600,000)    
Goodwill, Written off Related to Sale of Business Unit (1,000,000) (1,000,000) 0 0 0   0 (1,000,000)   0      
Currency fluctuations   6,600,000 (1,200,000)     0 0   6,600,000 (1,200,000)      
Goodwill period end 523,600,000 523,600,000 496,100,000 391,200,000 193,600,000 193,600,000 176,800,000 330,000,000 330,000,000 319,300,000      
Accumulated impairment loss period end (28,200,000) (28,200,000) (27,200,000) (27,200,000) (27,200,000) (27,200,000) (27,200,000) (1,000,000) (1,000,000) 0      
Goodwill, net period end $ 495,418,000 $ 495,418,000 $ 468,933,000 $ 364,000,000 $ 166,400,000 $ 166,400,000 $ 149,600,000 $ 329,000,000 $ 329,000,000 $ 319,300,000