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Fair Value Measurements (Details 2) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Millions
Dec. 31, 2015
Dec. 31, 2014
Estimate of Fair Value Measurement [Member]    
Asset Category    
Money market accounts $ 59.4 $ 15.4
Available for sale equity securities 6.6 2.3
Derivatives 2.1  
Total 68.1 17.7
Liability Category    
Contingent Consideration 70.7 63.9
Derivatives 13.5 0.1
Total 84.2 64.0
Fair Value, Inputs, Level 1 [Member]    
Asset Category    
Money market accounts 2.9 15.4
Available for sale equity securities 5.8 1.5
Derivatives 0.0  
Total 8.7 16.9
Liability Category    
Contingent Consideration 0.0 0.0
Derivatives 0.0 0.0
Total 0.0 0.0
Fair Value, Inputs, Level 2 [Member]    
Asset Category    
Money market accounts 56.5 0.0
Available for sale equity securities 0.8 0.8
Derivatives 2.1  
Total 59.4 0.8
Liability Category    
Contingent Consideration 0.0 0.0
Derivatives 13.5 0.1
Total 13.5 0.1
Fair Value, Inputs, Level 3 [Member]    
Asset Category    
Money market accounts 0.0 0.0
Available for sale equity securities 0.0 0.0
Derivatives 0.0  
Total 0.0 0.0
Liability Category    
Contingent Consideration 70.7 63.9
Derivatives 0.0 0.0
Total $ 70.7 $ 63.9