Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement [Abstract]
Net sales	$ 3,467.4	$ 3,367.4	$ 3,199.1
Cost of goods sold	2,520.0	2,464.1	2,337.9
Gross profit	947.4	903.3	861.2
Operating expenses:
Selling, general and administrative expenses	580.5	573.7	570.1
Losses and other expenses, net	21.7	6.8	9.3
Restructuring charges	3.2	1.9	5.0
Goodwill impairment	5.5	0.0	0.0
Asset impairment	44.5	0.0	0.0
Income from equity method investments	(13.4)	(13.8)	(12.2)
Operational income from continuing operations	305.4	334.7	289.0
Interest expense, net	23.6	17.2	14.5
Other expense, net	(0.8)	(0.1)	0.2
Income from continuing operations before income taxes	282.6	317.6	274.3
Provision for income taxes	95.4	109.5	94.4
Income from continuing operations	187.2	208.1	179.9
Discontinued operations:
Loss from discontinued operations before income taxes	(1.0)	(3.7)	(13.3)
Benefit from income taxes	(0.4)	(1.4)	(5.2)
Loss from discontinued operations	(0.6)	(2.3)	(8.1)
Net income	$ 186.6	$ 205.8	$ 171.8
Earnings per share – Basic:
Income from continuing operations (in usd per share)	$ 4.17	$ 4.35	$ 3.61
Loss from discontinued operations (in usd per share)	(0.01)	(0.05)	(0.16)
Net income (in usd per share)	4.16	4.30	3.45
Earnings per share – Diluted:
Income from continuing operations (in usd per share)	4.11	4.28	3.55
Loss from discontinued operations (in usd per share)	(0.02)	(0.05)	(0.16)
Net income (in usd per share)	$ 4.09	$ 4.23	$ 3.39
Average shares outstanding:
Basic (in shares)	44.9	47.9	49.8
Diluted (in shares)	45.6	48.6	50.6
Cash dividends declared per share (in usd per share)	$ 1.38	$ 1.14	$ 0.92