Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Income Statement [Abstract]
Other comprehensive (loss) income, net of tax	$ (31.4)	$ 37.7	$ 9.6
Net sales	3,883.9	3,839.6	3,641.6
Cost of goods sold	2,772.7	2,714.4	2,565.1
Gross profit	1,111.2	1,125.2	1,076.5
Operating expenses:
Selling, general and administrative expenses	608.2	637.7	621.0
Losses (gains) and other expenses, net	13.4	7.1	11.3
Restructuring charges	3.0	3.2	1.8
Pension settlement	0.4	0.0	31.4
Loss (gain), net on sale of businesses and related property	27.0	1.1	0.0
Insurance proceeds for lost profits	(27.4)	0.0	0.0
Gain from insurance recoveries, net of losses incurred	(10.9)	0.0	0.0
Income from equity method investments	(12.0)	(18.4)	(18.4)
Operating income	509.5	494.5	429.4
Interest expense, net	38.3	30.6	27.0
Other expense (income), net	3.3	(0.1)	(0.3)
Income from continuing operations before income taxes	467.9	464.0	402.7
Provision for income taxes	107.6	156.9	124.1
Income from continuing operations	360.3	307.1	278.6
Discontinued operations:
Income (loss) from discontinued operations before income taxes	0.8	(2.2)	(1.3)
Income tax expense (benefit)	2.1	(0.8)	(0.5)
Loss from discontinued operations	(1.3)	(1.4)	(0.8)
Net income	$ 359.0	$ 305.7	$ 277.8
Earnings per share – Basic:
Income from continuing operations (in usd per share)	$ 8.87	$ 7.28	$ 6.41
Loss from discontinued operations (in usd per share)	(0.03)	(0.03)	(0.02)
Net income (in usd per share)	8.84	7.25	6.39
Earnings per share – Diluted:
Income from continuing operations (in usd per share)	8.77	7.17	6.34
Loss from discontinued operations (in usd per share)	(0.03)	(0.03)	(0.02)
Net income (in usd per share)	$ 8.74	$ 7.14	$ 6.32
Weighted Average Number of Shares Outstanding - Basic	40.6	42.2	43.4
Weighted Average Number of Shares Outstanding - Diluted	41.1	42.8	44.0
Cash dividends declared per share (in usd per share)	$ 2.43	$ 1.96	$ 1.65