Goodwill and Other Intangible Assets - Other Intangible Assets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Assets subject to amortization, accumulated amortization	$ (1,386.6)	$ (1,230.6)
Intangible assets, cost	5,228.7	4,705.8
Intangible assets, net book value	3,842.1	3,475.2
Trade names
Finite-Lived Intangible Assets [Line Items]
Assets not subject to amortization	608.9	587.7
In process research and development
Finite-Lived Intangible Assets [Line Items]
Assets not subject to amortization		1.4
Customer related intangibles
Finite-Lived Intangible Assets [Line Items]
Assets subject to amortization, cost	3,926.8	3,355.2
Assets subject to amortization, accumulated amortization	(1,083.6)	(913.7)
Assets subject to amortization, net book value	2,843.2	2,441.5
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Assets subject to amortization, cost	504.0	544.1
Assets subject to amortization, accumulated amortization	(199.5)	(207.7)
Assets subject to amortization, net book value	304.5	336.4
Software
Finite-Lived Intangible Assets [Line Items]
Assets subject to amortization, cost	172.0	184.7
Assets subject to amortization, accumulated amortization	(93.2)	(84.8)
Assets subject to amortization, net book value	78.8	99.9
Patents and other protective rights
Finite-Lived Intangible Assets [Line Items]
Assets subject to amortization, cost	9.7	26.1
Assets subject to amortization, accumulated amortization	(7.5)	(22.7)
Assets subject to amortization, net book value	2.2	3.4
Trade names
Finite-Lived Intangible Assets [Line Items]
Assets subject to amortization, cost	7.3	6.6
Assets subject to amortization, accumulated amortization	(2.8)	(1.7)
Assets subject to amortization, net book value	$ 4.5	$ 4.9