Consolidated Statements of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Income Statement [Abstract]
Net sales	$ 955.0	$ 898.4	$ 2,633.3	$ 2,554.6
Cost of goods sold	681.6	651.3	1,913.5	1,876.7
Gross profit	273.4	247.1	719.8	677.9
Operating Expenses:
Selling, general and administrative expenses	143.8	140.9	430.0	425.5
Losses (gains) and other expenses, net	6.0	2.1	14.9	3.5
Restructuring charges	(0.4)	1.0	1.8	1.3
Income from equity method investments	(3.0)	(3.5)	(11.8)	(12.0)
Operational income from continuing operations	127.0	106.6	284.9	259.6
Interest expense, net	5.7	4.0	17.9	11.0
Other expense (income), net	(0.7)	0.0	(0.7)	0.0
Income from continuing operations before income taxes	122.0	102.6	267.7	248.6
Provision for income taxes	41.7	35.1	91.9	86.6
Income from continuing operations	80.3	67.5	175.8	162.0
Discontinued Operations:
Loss from discontinued operations before income taxes	0.0	(0.2)	(0.9)	(1.3)
Benefit from income taxes	0.0	(0.1)	(0.4)	(0.5)
Loss from discontinued operations	0.0	(0.1)	(0.5)	(0.8)
Net income	$ 80.3	$ 67.4	$ 175.3	$ 161.2
Earnings per share – Basic:
Income from continuing operations (in dollars per share)	$ 1.78	$ 1.40	$ 3.92	$ 3.33
Loss from discontinued operations (in dollars per share)	0.00	0.00	(0.01)	(0.02)
Net income (in dollars per share)	1.78	1.40	3.91	3.31
Earnings per share – Diluted:
Income from continuing operations (in dollars per share)	1.76	1.38	3.86	3.27
Loss from discontinued operations (in dollars per share)	0.00	0.00	(0.01)	(0.01)
Net income (in dollars per share)	$ 1.76	$ 1.38	$ 3.85	$ 3.26
Average shares outstanding:
Weighted Average Number of Shares Outstanding - Basic	45.0	48.3	44.9	48.7
Weighted Average Number of Shares Outstanding - Diluted	45.6	49.0	45.6	49.5
Cash dividends declared per share	$ 0.36	$ 0.30	$ 1.02	$ 0.84