Goodwill and Other Intangible Assets (Other Intangible Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2018	Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]
Accumulated amortization	$ (1,348.6)	$ (1,230.6)
Intangible assets, gross (excluding goodwill)	5,235.6	4,705.8
Intangible assets, net (excluding goodwill)	3,887.0	3,475.2
Trade names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	613.4	587.7
In process research and development
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	1.4	1.4
Customer related intangibles
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	3,923.8	3,355.2
Accumulated amortization	(1,060.0)	(913.7)
Finite-lived intangible assets, net	2,863.8	2,441.5
Unpatented technology
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	500.7	544.1
Accumulated amortization	(182.9)	(207.7)
Finite-lived intangible assets, net	317.8	336.4
Software
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	174.7	184.7
Accumulated amortization	(90.9)	(84.8)
Finite-lived intangible assets, net	83.8	99.9
Patents and other protective rights
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	14.8	26.1
Accumulated amortization	(12.1)	(22.7)
Finite-lived intangible assets, net	2.7	3.4
Trade names
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets, gross	6.8	6.6
Accumulated amortization	(2.7)	(1.7)
Finite-lived intangible assets, net	$ 4.1	$ 4.9