Condensed Consolidated Statements of Income and Comprehensive Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Condensed Consolidated Statements of Operations and Comprehensive (Loss) Income
Revenues	$ 1,315.6	$ 1,057.0	$ 3,434.3	$ 2,981.6
Cost of goods sold	944.0	739.1	2,510.1	2,124.2
Selling and administrative expenses	192.6	153.0	504.7	448.5
Research and development expenses	12.8	11.5	37.0	35.1
Other operating income, net	(0.3)	(1.4)	(2.5)	(2.7)
Operating income	166.5	154.8	385.0	376.5
Interest expense, net	19.8	19.1	58.2	57.8
Loss on extinguishment of debt	0.0	0.0	0.0	8.8
Interest income	(0.2)	(0.7)	(1.1)	(4.0)
Other non-operating expense (income), net	0.9	0.5	5.6	(0.4)
Income from continuing operations before income taxes	146.0	135.9	322.3	314.3
Provision for income taxes	33.0	33.2	66.1	70.8
Income from continuing operations	113.0	102.7	256.2	243.5
Discontinued operations:
Income (loss) before income taxes	2.2	0.5	13.0	(4.7)
(Benefit from) provision for income taxes	(26.9)	0.9	(24.4)	(0.7)
Income (loss) from discontinued operations	29.1	(0.4)	37.4	(4.0)
Net income	$ 142.1	$ 102.3	$ 293.6	$ 239.5
Basic earnings per share attributable to common shares:
Income from continuing operations (in dollars per share)	$ 2.15	$ 1.89	$ 4.86	$ 4.42
(Loss) income from discontinued operations (in dollars per share)	0.55	(0.01)	0.71	(0.07)
Basic earnings per share (in dollars per share)	2.70	1.88	5.57	4.35
Income from continuing operations (in dollars per share)	2.12	1.88	4.80	4.38
(Loss) income from discontinued operations (in dollars per share)	0.55	(0.01)	0.70	(0.07)
Diluted earnings per share (in dollars per share)	$ 2.67	$ 1.87	$ 5.50	$ 4.31
Average shares outstanding:
Basic (in shares)	52.3	54.1	52.6	54.9
Diluted (in shares)	53.0	54.5	53.2	55.4
Comprehensive income:
Net income	$ 142.1	$ 102.3	$ 293.6	$ 239.5
Other comprehensive income (loss), net of tax:
Foreign currency gains (losses)	0.6	24.9	(5.9)	4.4
Amortization of unrecognized net periodic benefit costs, net of tax	1.2	1.1	3.6	3.1
Other, net of tax	(0.2)	2.2	(1.9)	(15.3)
Other comprehensive income (loss)	1.6	28.2	(4.2)	(7.8)
Comprehensive income	$ 143.7	$ 130.5	$ 289.4	$ 231.7