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2. Acquisitions (Details)
In Millions, unless otherwise specified
 9 Months Ended 9 Months Ended 9 Months Ended
Sep. 30, 2012
USD ($)
Aug. 31, 2012
CellSorter [Member]
USD ($)
Jul. 30, 2012
Benelux [Member]
USD ($)
Jul. 30, 2012
Benelux [Member]
EUR (€)
Jan. 18, 2012
Portland [Member]
USD ($)
Sep. 30, 2012
QuantaLife [Member]
USD ($)
Oct. 04, 2011
QuantaLife [Member]
USD ($)
Sep. 30, 2012
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
USD ($)
Dec. 31, 2011
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
USD ($)
Sep. 30, 2012
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
CellSorter [Member]
USD ($)
Sep. 30, 2012
Fair Value, Measurements, Recurring [Member]
Estimate of Fair Value, Fair Value Disclosure [Member]
QuantaLife [Member]
USD ($)
Business Acquisition [Line Items]                      
Business Acquisition, Cost of Acquired Entity, Purchase Price   $ 49.6 $ 5.6 € 4.6 $ 12.5   $ 179.4        
Business Acquisition, Purchase Price Allocation, Net Tangible Assets   0.1 (2.3)   6.3   (20.8)        
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets   32.1 4.9   5.1   94.7        
Business Acquisition, Purchase Price Allocation, Goodwill Amount   17.4 3.0   1.1   105.5        
Employment agreement         2.0            
Business Acquisition, Cost of Acquired Entity, Cash Paid   5.0         150.3        
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability                   44.6 (16.0)
Purchase Price Holdback Consideration             5.0        
Business Acquisition, Contingent Consideration, at Fair Value             24.1 52.7 [1] 24.1 [1]   8.1
Business Acquisition, Contingent Consideration, at Fair Value, Current   19.9                  
Business Acquisition, Contingent Consideration, at Fair Value, Noncurrent   24.7                  
Business Acquisition, Contingent Consideration, Potential Cash Payment           42 48        
Goodwill, Purchase Accounting Adjustments $ (0.6)         $ (0.6)          
[1] Contingent consideration liability is included in the following accounts in the Condensed Consolidated Balance Sheet (in millions): September 30, 2012 December 31, 2011Other current liabilities$26.7 $8.5Other long-term liabilities26.0 15.6 Total$52.7 $24.1