Intangible Assets - Summary of Changes (Details) $ in Millions	6 Months Ended
	Jun. 30, 2017 USD ($)
Summary of the changes in the carrying amount of goodwill and other indefinite-lived intangible assets
Goodwill, Beginning Balance	$ 1,291.2
Goodwill, Additions	322.5
Goodwill, Disposals	(1.9)
Goodwill, Foreign currency translation	29.5
Goodwill, Ending Balance	1,641.3
Other indefinite-lived intangible assets, Beginning Balance	420.1
Other indefinite-lived intangible assets, Additions	39.6
Other indefinite-lived intangible assets, Disposals	(1.5)
Other indefinite-lived intangible assets, Foreign currency translation	9.5
Other indefinite-lived intangible assets, Ending Balance	$ 467.7