Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income
Revenues	$ 4,811.6	$ 4,479.5	$ 3,750.8
Cost of goods sold	3,439.9	3,304.8	2,702.5
Selling and administrative expenses	667.1	625.4	532.9
Research and development expenses	60.9	55.1	51.3
Other operating (income) expense, net	(10.5)	(14.8)	0.1
Operating income	654.2	509.0	464.0
Interest expense, net	66.1	64.7	34.0
Interest income	7.9	11.2	0.5
Other non-operating expense, net	0.7	9.6	1.5
Income from continuing operations before income taxes	595.3	445.9	429.0
Provision for income taxes	121.6	87.3	88.4
Income from continuing operations	473.7	358.6	340.6
Discontinued operations:
(Loss) income before income taxes	(1.8)	300.1	39.6
(Benefit from) provision for income taxes	(0.9)	47.6	14.7
(Loss) income from discontinued operations	(0.9)	252.5	24.9
Net income	$ 472.8	$ 611.1	$ 365.5
Basic earnings per share attributable to common shares:
Income from continuing operations (in dollars per share)	$ 8.30	$ 5.92	$ 5.36
Income from discontinued operations (in dollars per share)	(0.02)	4.17	0.39
Basic earnings per share (in dollars per share)	8.28	10.09	5.75
Diluted earnings per share attributable to common shares:
Income from continuing operations (in dollars per share)	8.21	5.88	5.32
(Loss) from discontinued operations (in dollars per share)	(0.02)	4.14	0.39
Diluted earnings per share (in dollars per share)	$ 8.19	$ 10.02	$ 5.71
Average shares outstanding (in thousands):
Basic (shares)	56,913	60,393	63,073
Diluted (shares)	57,547	60,786	63,551
Comprehensive income:
Net income	$ 472.8	$ 611.1	$ 365.5
Other comprehensive (loss) income:
Foreign currency (losses) gains	(2.1)	(30.3)	46.6
Amortization of unrecognized net periodic benefit costs, net of tax	(2.0)	(0.4)	(5.2)
Other, net of tax	2.1	0.8	(4.9)
Other comprehensive (loss) income	(2.0)	(29.9)	36.5
Comprehensive income	$ 470.8	$ 581.2	$ 402.0