CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED) - USD ($) shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Income Statement [Abstract]
Net sales		$ 2,033.0	$ 1,952.6	$ 6,485.4	$ 5,978.1
Type of Revenue [Extensible List]		us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Cost of sales		$ (1,646.9)	$ (1,557.7)	$ (5,199.3)	$ (4,739.2)
Type of Cost, Good or Service [Extensible List]		us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember	us-gaap:ProductMember
Gross profit		$ 386.1	$ 394.9	$ 1,286.1	$ 1,238.9
Selling, general and administrative expenses		(90.0)	(96.8)	(290.9)	(297.0)
Research, development and engineering expenses, net		(101.9)	(93.1)	(327.9)	(295.0)
Amortization of intangibles		(2.8)	(2.7)	(8.5)	(8.3)
Other income (expense), net		1.1	(35.1)	6.2	(29.3)
Operating income		192.5	167.2	665.0	609.3
Income from equity method investments		0.2	0.5	2.8	1.2
Interest income		1.3	1.8	4.1	5.6
Interest expense		(18.9)	(15.4)	(46.2)	(46.6)
Other non-operating items, net		(3.8)	(3.4)	(15.4)	(17.9)
Income from continuing operations before income taxes		171.3	150.7	610.3	551.6
Income tax expense		(53.3)	(44.5)	(140.0)	(161.0)
Income from continuing operations		118.0	106.2	470.3	390.6
Loss from discontinued operations, net of income taxes (Note 3)			(18.0)	(195.8)	(32.0)
Net income		118.0	88.2	274.5	358.6
Less: Net income from continuing operations attributable to non-controlling interest		0.5	0.5	1.4	1.3
Less: Net loss from discontinued operations attributable to non-controlling interest			(3.1)	(8.3)	(7.2)
Net income attributable to controlling interest		117.5	90.8	281.4	364.5
Amounts attributable to controlling interest:
Net Income from continuing operations		117.5	105.7	468.9	389.3
Net Loss from discontinued operations (Note 3)			(14.9)	(187.5)	(24.8)
Net income attributable to controlling interest		$ 117.5	$ 90.8	$ 281.4	$ 364.5
Earnings per share continuing operations – basic	[1]	$ 1.35	$ 1.22	$ 5.38	$ 4.44
Earnings per share discontinued operations – basic	[1]		(0.17)	(2.15)	(0.28)
Basic earnings per share		1.35	1.05	3.23	4.16
Earnings per share continuing operations – diluted	[1]	1.34	1.21	5.37	4.43
Earnings per share discontinued operations – diluted	[1]		(0.17)	(2.15)	(0.28)
Diluted earnings per share		$ 1.34	$ 1.04	$ 3.22	$ 4.15
Weighted average number of shares outstanding, net of treasury shares (in millions)		87.1	86.9	87.1	87.7
Weighted average number of shares outstanding, assuming dilution and net of treasury shares (in millions)		87.4	87.2	87.3	87.9
Cash dividend per share – declared		$ 0.62	$ 0.60	$ 1.86	$ 1.80
Cash dividend per share – paid		$ 0.62	$ 0.60	$ 1.84	$ 1.78

[1] Participating share awards with the right to receive dividend equivalents are (under the two class method) excluded from the earnings per share calculation (see Note 14 to the unaudited condensed consolidated financial statements).