Goodwill and Other Intangible Assets, net - Other Intangibles and Amortization (Details) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016
Other intangible assets, net
Other intangible assets, Acquired Cost	$ 1,332.8	$ 1,157.9
Other intangible assets, Accumulated Amortization	(327.5)	(285.7)
Other intangible assets, net	1,005.3	872.2
Trade names
Assets not subject to amortization:
Trade names	264.2	237.5
Customer relationships
Other intangible assets
Acquired Cost	811.5	704.3
Accumulated Amortization	(229.8)	(201.6)
Net Book Value	581.7	502.7
Intellectual property
Other intangible assets
Acquired Cost	240.7	200.7
Accumulated Amortization	(85.6)	(72.4)
Net Book Value	155.1	128.3
Other
Other intangible assets
Acquired Cost	16.4	15.4
Accumulated Amortization	(12.1)	(11.7)
Net Book Value	$ 4.3	$ 3.7