CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net sales	$ 2,936.9	$ 3,283.1	$ 3,345.5
Operating costs and expenses:
Cost of sales	1,930.7	2,104.1	2,156.2
Selling, general and administrative	698.1	698.0	711.9
Asbestos provision, net	0.0	229.0	0.0
Environmental provision, net	0.0	18.9	0.0
Restructuring charges, net	32.3	17.5	7.2
Acquisition-related and integration charges	12.9	5.2	28.9
Operating profit	262.9	210.4	441.3
Other income (expense):
Interest income	2.0	2.7	2.3
Interest expense	(55.3)	(46.8)	(50.9)
Miscellaneous income, net	14.9	4.4	18.7
Total other income (expense)	(38.4)	(39.7)	(29.9)
Income before income taxes	224.5	170.7	411.4
Provision for income taxes	43.4	37.1	75.9
Net income before allocation to noncontrolling interests	181.1	133.6	335.5
Less: Noncontrolling interest in subsidiaries’ earnings (loss)	0.1	0.3	(0.1)
Net income attributable to common shareholders	$ 181.0	$ 133.3	$ 335.6
Earnings per share - basic:
Basic earnings per share (in dollars per share)	$ 3.10	$ 2.23	$ 5.63
Weighted average basic shares outstanding (in shares)	58.3	59.8	59.6
Earnings per share - diluted:
Diluted earnings per share (in dollars per share)	$ 3.08	$ 2.20	$ 5.50
Weighted average diluted shares outstanding (in shares)	58.8	60.6	61.0