XML 51 R39.htm IDEA: XBRL DOCUMENT v3.8.0.1
Business Combination Intangible Assets (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Aug. 01, 2016
Acquired Indefinite-lived Intangible Assets [Line Items]      
Finite-Lived Customer Relationships, Gross     $ 22.0
Finite-Lived Trade Names, Gross     0.7
Finite-Lived Intangible Assets, Gross $ 551.3 $ 541.8 $ 22.7
Customer Relationships [Member]      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Finite-Lived Intangible Assets, Gross $ 483.1 $ 474.0  
Customer Relationships [Member] | buw Acquisition [Member]      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 10 years    
Trade Names [Member] | buw Acquisition [Member]      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 1 year    
Maximum [Member] | Customer Relationships [Member]      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 17 years    
Minimum [Member] | Customer Relationships [Member]      
Acquired Indefinite-lived Intangible Assets [Line Items]      
Finite-Lived Intangible Asset, Useful Life 1 year