Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Statement [Abstract]
Net sales	$ 1,239.0	$ 941.3	$ 2,169.4	$ 1,665.1
Cost of goods sold	855.8	665.6	1,529.7	1,223.7
Gross profit	383.2	275.7	639.7	441.4
Operating Expenses:
Selling, general and administrative expenses	167.8	129.5	313.2	260.8
Losses (gains) and other expenses, net	2.3	3.6	2.6	2.3
Restructuring charges	(1.2)	(10.0)	(1.3)	(10.5)
Loss from natural disasters, net of insurance recoveries	0.0	(1.0)	0.0	(2.7)
Income from equity method investments	(4.1)	(4.4)	(7.4)	(7.2)
Operating income	216.0	136.0	330.0	172.3
Pension settlement	0.0	0.0	0.7	0.0
Interest expense, net	6.4	6.9	12.3	15.6
Other expense (income), net	0.9	1.1	1.9	2.2
Income from continuing operations before income taxes	208.7	128.0	315.1	154.5
Provision for income taxes	38.7	27.4	60.9	41.4
Income from continuing operations	170.0	100.6	254.2	113.1
Discontinued Operations:
Loss from discontinued operations before income taxes	0.0	(0.8)	0.0	(0.8)
Income tax benefit	0.0	(0.2)	0.0	(0.6)
Loss from discontinued operations	0.0	(0.6)	0.0	(0.2)
Net income	$ 170.0	$ 100.0	$ 254.2	$ 112.9
Earnings per share – Basic:
Income from continuing operations (in dollars per share)	$ 4.55	$ 2.63	$ 6.74	$ 2.95
Loss from discontinued operations (in dollars per share)	0	(0.01)	0	0
Net income (in dollars per share)	4.55	2.62	6.74	2.95
Earnings per share – Diluted:
Income from continuing operations (in dollars per share)	4.51	2.62	6.70	2.93
Loss from discontinued operations (in dollars per share)	0	(0.02)	0	0
Net income (in dollars per share)	$ 4.51	$ 2.60	$ 6.70	$ 2.93