Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net sales	$ 537.5	$ 361.5
Operating costs and expenses:
Cost of sales	392.6	313.3
Depreciation and amortization	18.7	19.1
Selling and administrative	35.4	31.3
Loss on sale or impairment of long-lived assets, net	0	0.1
Other operating credits and charges, net	1.6	(0.2)
Total operating costs and expenses	448.3	363.6
Income (loss) from operations	89.2	(2.1)
Non-operating income (expense):
Interest expense, net of capitalized interest	(10.6)	(12.6)
Investment income	3.5	4.2
Other non-operating items	(0.7)	(0.1)
Total non-operating expense	(7.8)	(8.5)
Income (loss) from continuing operations before taxes and equity in (income) loss of unconsolidated affiliates	81.4	(10.6)
Provision (benefit) for income taxes	23.2	(1.2)
Equity in (income) loss of unconsolidated affiliates	(7.2)	1.8
Income (loss) from continuing operations	65.4	(11.2)
Loss from discontinued operations before taxes	(0.1)	(0.2)
Benefit for income taxes	0	(0.1)
Loss from discontinued operations	(0.1)	(0.1)
Net income (loss)	$ 65.3	$ (11.3)
Income (loss) per share of common stock (basic):
Income (loss) from continuing operations	$ 0.47	$ (0.08)
Loss from discontinued operations	$ 0.00	$ 0.00
Net income (loss) per share	$ 0.47	$ (0.08)
Net income (loss) per share of common stock (diluted):
Income (loss) from continuing operations	$ 0.45	$ (0.08)
Loss from discontinued operations	$ 0.00	$ 0.00
Net income (loss) per share	$ 0.45	$ (0.08)
Average shares of stock outstanding - basic	138.4	136.6
Average shares of stock outstanding - diluted	144.4	136.6