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Business Combinations, Textuals (Details)
$ in Millions
12 Months Ended 36 Months Ended
Dec. 06, 2016
USD ($)
Aug. 09, 2016
USD ($)
Apr. 01, 2016
USD ($)
Mar. 31, 2016
USD ($)
Jan. 07, 2014
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2016
Acquisition
Aug. 08, 2016
Business Acquisition [Line Items]                    
Number of businesses acquired | Acquisition                 4  
Acquisition related costs           $ 11.8 $ 0.0 $ 0.5    
AppFormix [Member]                    
Business Acquisition [Line Items]                    
Payments to acquire business $ 47.9                  
Share-based awards assumed, fair value $ 23.9                  
Aurrion, Inc [Member]                    
Business Acquisition [Line Items]                    
Payments to acquire business   $ 74.3                
Ownership interest prior to acquisition of remaining ownership interest                   18.00%
Ownership interest   100.00%                
Fair value of pre-existing equity investment   $ 17.2                
Fair value of pre-existing convertible debt   10.4                
Share-based awards assumed, fair value   $ 55.0                
BTI Systems, Inc [Member]                    
Business Acquisition [Line Items]                    
Payments to acquire business     $ 25.8              
Ownership interest prior to acquisition of remaining ownership interest       12.00%            
Ownership interest     100.00%              
Fair value of pre-existing equity investment     $ 17.1              
Convertible debt held during pre-existing investment       $ 0.9            
Repayment of liabilities assumed     18.6              
Share-based awards assumed, fair value     $ 8.6              
WANDL, Inc, [Member]                    
Business Acquisition [Line Items]                    
Percentage of interests acquired         100.00%          
Consideration transferred         $ 28.7          
Share-based awards assumed, fair value         $ 34.9