Goodwill and Other Intangible Assets, net - Other Intangibles and Amortization (Details) - USD ($) $ in Millions	Mar. 31, 2017	Dec. 31, 2016
Other intangible assets, net
Other intangible assets, Acquired Cost	$ 1,324.4	$ 1,157.9
Other intangible assets, Accumulated Amortization	(305.5)	(285.7)
Other intangible assets, net	1,018.9	872.2
Trade names
Assets not subject to amortization:
Acquired Cost	263.0	237.5
Customer relationships
Other intangible assets
Acquired Cost	807.0	704.3
Accumulated Amortization	(215.1)	(201.6)
Net Book Value	591.9	502.7
Intellectual property
Other intangible assets
Acquired Cost	238.0	200.7
Accumulated Amortization	(78.5)	(72.4)
Net Book Value	159.5	128.3
Other
Other intangible assets
Acquired Cost	16.4	15.4
Accumulated Amortization	(11.9)	(11.7)
Net Book Value	$ 4.5	$ 3.7