v3.10.0.1
Goodwill and Other Intangible Assets, Net - Goodwill (Details)
$ in Millions
6 Months Ended
Jun. 30, 2018
USD ($)
Goodwill [Roll forward]  
Beginning balance $ 11,315.4
Acquisitions 31.3
Divestitures (0.3)
Adjustments and Other (1.1)
Ending balance 11,345.3
Group 1  
Goodwill [Roll forward]  
Beginning balance 6,084.0
Acquisitions 18.6
Divestitures (0.3)
Adjustments and Other (1.1)
Ending balance 6,101.2
Group 2  
Goodwill [Roll forward]  
Beginning balance 5,231.4
Acquisitions 12.7
Divestitures 0.0
Adjustments and Other 0.0
Ending balance $ 5,244.1