Consolidated Statement of Income (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Net sales	$ 572.6	$ 427.8	$ 1,110.1	$ 789.3
Operating costs and expenses:
Cost of sales	422.7	359.9	815.3	673.2
Depreciation and amortization	20.8	17.9	39.5	37.0
Selling and administrative	35.5	30.7	70.9	62.0
(Gain) loss on sale or impairment of long-lived assets, net	(0.7)	0.1	(0.7)	0.2
Other operating credits and charges, net	5.4	0.2	7.0	0
Total operating costs and expenses	483.7	408.8	932.0	772.4
Income from operations	88.9	19.0	178.1	16.9
Non-operating income (expense):
Interest expense, net of capitalized interest	(9.8)	(13.1)	(20.4)	(25.7)
Investment income	3.1	3.4	6.6	7.6
Early debt extinguishment	0	(52.2)	0	(52.2)
Gain on acquisition	35.9	0	35.9	0
Other non-operating items	(3.6)	(2.6)	(4.3)	(2.7)
Total non-operating expense	25.6	(64.5)	17.8	(73.0)
Income (loss) from continuing operations before taxes and equity in (income) loss of unconsolidated affiliates	114.5	(45.5)	195.9	(56.1)
Provision (benefit) for income taxes	24.4	(11.1)	47.6	(12.3)
Equity in (income) loss of unconsolidated affiliates	(4.1)	2.8	(11.3)	4.6
Income (loss) from continuing operations	94.2	(37.2)	159.6	(48.4)
Loss from discontinued operations before taxes	(0.2)	(0.1)	(0.3)	(0.3)
Benefit for income taxes	(0.1)	0	(0.1)	(0.1)
Loss from discontinued operations	(0.1)	(0.1)	(0.2)	(0.2)
Net income (loss)	$ 94.1	$ (37.3)	$ 159.4	$ (48.6)
Income (loss) per share of common stock (basic):
Income (loss) from continuing operations	$ 0.68	$ (0.27)	$ 1.15	$ (0.35)
Loss from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income (loss) per share	$ 0.68	$ (0.27)	$ 1.15	$ (0.35)
Net income (loss) per share of common stock (diluted):
Income (loss) from continuing operations	$ 0.65	$ (0.27)	$ 1.10	$ (0.35)
Loss from discontinued operations	$ 0.00	$ 0.00	$ 0.00	$ 0.00
Net income (loss) per share	$ 0.65	$ (0.27)	$ 1.10	$ (0.35)
Average shares of stock outstanding - basic	139.1	137.0	138.8	136.8
Average shares of stock outstanding - diluted	144.1	137.0	144.3	136.8