XML 71 R55.htm IDEA: XBRL DOCUMENT v3.6.0.2
Intangible Assets (Narrative) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Finite-Lived Intangible Assets [Line Items]      
Total intangible assets amortization expenses $ 35.0 $ 36.0 $ 32.0
Capitalized Software Development Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Capitalized software development costs 33.0 33.0 27.0
Capitalized computer software amortization 19.0 18.0 15.0
Costs related to stock based compensation $ 1.3 $ 1.3 $ 1.2
Useful life (in years) 3 years    
Minimum [Member] | Capitalized Software Development Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 3 years    
Minimum [Member] | Acquired Technology and Other Intangibles [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 2 years    
Minimum [Member] | Patents [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 10 years    
Maximum [Member] | Capitalized Software Development Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 6 years    
Maximum [Member] | Acquired Technology and Other Intangibles [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 8 years    
Maximum [Member] | Patents [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 17 years    
Weighted Average [Member] | Capitalized Software Development Costs [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 3 years 1 month 6 days    
Weighted Average [Member] | Acquired Technology [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 2 years    
Weighted Average [Member] | Patents [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 2 years 10 months 24 days    
Weighted Average [Member] | Other [Member]      
Finite-Lived Intangible Assets [Line Items]      
Useful life (in years) 4 years 3 months 18 days