Statements of Consolidated Income (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Net sales	$ 1,360.1		$ 1,301.3		$ 1,079.1
Cost of products sold:
Cost of products sold, excluding depreciation and amortization and other items	1,116.2		1,129.0		946.1
Unrealized (gains) losses on derivative instruments	(15.2)		29.9		0.7
Restructuring benefits	0		(0.3)		(0.3)
Depreciation and amortization	26.5		25.2		19.8
Selling, administrative, research and development, and general	62.2		62.7		67.7
Other operating charges (benefits), net	4.5		(0.2)		4.0
Total costs and expenses	1,194.2		1,246.3		1,038.0
Operating income	165.9		55.0		41.1
Other (expense) income:
Interest expense	(29.1)		(18.0)		(11.8)
Other income (expense), net	2.8		4.3		(4.2)
Income before income taxes	139.6		41.3		25.1
Income tax provision	(53.8)		(16.2)		(13.1)
Net income	$ 85.8		$ 25.1		$ 12.0
Earnings per common share, Basic:
Net income per share	$ 4.49		$ 1.32		$ 0.61
Earnings per common share, Diluted:
Net income per share1	$ 4.45	[1],[2]	$ 1.32	[1],[2]	$ 0.61	[1],[2]
Weighted-average number of common shares outstanding (in thousands):
Basic	19,115	[3]	18,979	[3]	19,377	[3]
Diluted1	19,278	[2]	18,979	[2]	19,377	[2]

[1] Diluted weighted-average number of common shares outstanding and diluted earnings per share for 2012 is based on the treasury method. Diluted weighted-average number of common shares outstanding and diluted earnings per share for 2011 and 2010 are based on the two-class method (see Note 1 and Note 14).

[2] The diluted weighted-average number of common shares outstanding and diluted earnings per share for 2012 were calculated using the treasury method. The diluted weighted-average number of common shares outstanding and diluted earnings per share for 2011 and 2010 were calculated using the two-class method (see Note 1).

[3] The basic weighted-average number of common shares outstanding during the period excludes unvested share-based payment awards.