Consolidated Statements of Operations (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Income Statement [Abstract]
Net sales	$ 3,367.4	[1]	$ 3,199.1	[1]	$ 2,949.4	[1]
Cost of goods sold	2,464.1		2,337.9		2,227.1
Gross profit	903.3		861.2		722.3
Operating expenses:
Selling, general and administrative expenses	573.7		570.1		507.0
Other items, net	6.8		9.3		2.5
Restructuring charges	1.9		5.0		4.2
Income from equity method investments	(13.8)		(12.2)		(10.5)
Operational income from continuing operations	334.7		289.0		219.1
Interest expense, net	17.2		14.5		17.1
Other expense, net	(0.1)		0.2		0.3
Income from continuing operations before income taxes	317.6		274.3		201.7
Provision for income taxes	109.5		94.4		66.7
Income from continuing operations	208.1		179.9		135.0
Discontinued operations:
Loss from discontinued operations before income taxes	(3.7)		(13.3)		(64.9)
Benefit from income taxes	(1.4)		(5.2)		(19.9)
Loss from discontinued operations	(2.3)		(8.1)		(45.0)
Net income	$ 205.8		$ 171.8		$ 90.0
Earnings per share – Basic:
Income from continuing operations	$ 4.35		$ 3.61		$ 2.66
Loss from discontinued operations	$ (0.05)		$ (0.16)		$ (0.89)
Net income	$ 4.30		$ 3.45		$ 1.77
Earnings per share – Diluted:
Income from continuing operations	$ 4.28		$ 3.55		$ 2.63
Loss from discontinued operations	$ (0.05)		$ (0.16)		$ (0.88)
Net income	$ 4.23		$ 3.39		$ 1.75
Average shares outstanding:
Basic	47.9		49.8		50.7
Diluted	48.6		50.6		51.4
Cash dividends declared per share	$ 1.14		$ 0.92		$ 0.76

[1] On a consolidated basis, no revenue from transactions with a single customer were 10% or greater of our consolidated net sales for any of the periods presented.