Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income
Revenues	$ 1,024.2	$ 1,314.8	$ 2,054.4	$ 2,386.7
Cost of goods sold	743.0	920.6	1,494.8	1,703.9
Selling and administrative expenses	153.1	172.3	315.0	336.5
Research and development expenses	14.1	15.4	28.5	29.8
Other operating expense (income), net	0.6	(0.7)	0.0	(5.4)
Operating income	113.4	207.2	216.1	321.9
Interest expense, net	19.8	16.6	38.7	32.9
Loss on extinguishment of debt	0.0	0.0	8.8	0.0
Interest income	(2.7)	(1.9)	(3.4)	(4.5)
Other non-operating income, net	(0.7)	(0.6)	(1.2)	(1.0)
Income from continuing operations before income taxes	97.0	193.1	173.2	294.5
Provision for income taxes	21.6	40.1	36.0	64.1
Income from continuing operations	75.4	153.0	137.2	230.4
Discontinued operations:
Provision for (benefit from) income taxes	0.0	0.1	0.0	(1.9)
(Loss) income from discontinued operations	0.0	(0.1)	0.0	1.9
Net income	$ 75.4	$ 152.9	$ 137.2	$ 232.3
Basic earnings per share attributable to common shares:
Income from continuing operations (in dollars per share)	$ 1.37	$ 2.68	$ 2.47	$ 4.01
Income from discontinued operations (in dollars per share)	0	0	0	0.03
Basic earnings per share (in dollars per share)	1.37	2.68	2.47	4.04
Diluted earnings per share attributable to common shares:
Income from continuing operations (in dollars per share)	1.36	2.65	2.45	3.98
Income from discontinued operations (in dollars per share)	0	0	0	0.03
Diluted earnings per share (in dollars per share)	$ 1.36	$ 2.65	$ 2.45	$ 4.01
Average shares outstanding:
Basic weighted-average shares outstanding (in shares)	54,800	57,000	55,300	57,200
Diluted (in shares)	55,200	57,600	55,800	57,700
Comprehensive income:
Net income	$ 75.4	$ 152.9	$ 137.2	$ 232.3
Other comprehensive income (loss), net of tax:
Foreign currency gains (losses)	7.8	(3.6)	(20.5)	0.3
Amortization of unrecognized net periodic benefit costs, net of tax	1.0	0.6	2.0	1.3
Other, net of tax	0.7	(1.6)	(17.5)	0.0
Other comprehensive income (loss)	9.5	(4.6)	(36.0)	1.6
Comprehensive income	$ 84.9	$ 148.3	$ 101.2	$ 233.9