Condensed Consolidated Statements of Comprehensive Income (USD $) In Millions, except Share data in Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Condensed Consolidated Statements of Comprehensive Income
Net sales	$ 996.1	$ 984.6	$ 1,853.1	$ 1,873.9
Cost and expenses:
Cost of goods sold	755.9	729.2	1,425.3	1,407.3
Selling and administrative expenses	106.6	106.0	215.4	213.5
Research and development expenses	9.2	8.5	18.6	16.3
Impairment of assets	100.0		100.0
Other expense, net	1.9	0.6	1.2	0.3
Earnings before interest and income taxes	22.5	140.3	92.6	236.5
Interest expense, net	8.6	6.5	16.9	13.0
Earnings before income taxes from continuing operations	13.9	133.8	75.7	223.5
Income tax expense (Note 8)	5.7	44.4	12.2	74.1
Income from continuing operations	8.2	89.4	63.5	149.4
Discontinued operations (Note 5)
Income (loss) from discontinued operations		3.6	(0.1)	3.6
Income tax expense		0.2		0.2
Income (loss) from discontinued operations		3.4	(0.1)	3.4
Net income	8.2	92.8	63.4	152.8
Basic earnings per share attributable to common shares (Note 9)
Income from continuing operations (in dollars per share)	$ 0.13	$ 1.42	$ 1.00	$ 2.39
Income from discontinued operations (in dollars per share)		$ 0.06		$ 0.05
Basic earnings per share (in dollars per share)	$ 0.13	$ 1.48	$ 1.00	$ 2.44
Diluted earnings per share attributable to common shares (Note 9)
Income from continuing operations (in dollars per share)	$ 0.13	$ 1.39	$ 0.98	$ 2.34
Income from discontinued operations (in dollars per share)		$ 0.06		$ 0.05
Diluted earnings per share (in dollars per share)	$ 0.13	$ 1.45	$ 0.98	$ 2.39
Average shares outstanding - in thousands (Note 9)
Basic (in shares)	63,409	62,419	63,343	62,166
Diluted (in shares)	64,695	63,797	64,620	63,483
Dividends declared and paid	12.8	11.3	25.6	22.5
Dividends declared and paid per share (in dollars per share)	$ 0.20	$ 0.18	$ 0.40	$ 0.36
Comprehensive Income
Net income	8.2	92.8	63.4	152.8
Other comprehensive income (loss) (Note 19)
Change in foreign currency translation, net of tax	(0.1)	(8.7)	(10.4)	(4.4)
Change in accrued post-retirement benefit liability, net of tax	1.0	0.8	2.4	1.6
Loss on hedging activities, net of tax	(0.1)	(0.1)	(0.2)	(0.2)
Other comprehensive income (loss)	0.8	(8.0)	(8.2)	(3.0)
Comprehensive income	$ 9.0	$ 84.8	$ 55.2	$ 149.8