CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current assets:
Cash, including cash equivalents	$ 107.0	$ 91.8
Short-term investments	25.5	26.5
Accounts receivable, net	185.0	147.2
Inventories	159.2	151.8
Deferred income taxes	7.4	7.9
Other current assets	32.9	46.8
Total current assets	517.0	472.0
Property, plant and equipment	1,185.4	1,136.8
Less accumulated depreciation and amortization	565.1	543.2
Property, plant and equipment, net	620.3	593.6
Investments in affiliated companies	57.5	56.2
Goodwill	110.0	111.5
Deferred income taxes	84.0	85.1
Intangible assets, net	49.5	52.0
Other noncurrent assets	24.5	28.7
Total Assets	1,462.8	1,399.1
Current liabilities:
Notes payable and other current debt	89.1	50.1
Accounts payable	85.6	89.8
Pension and other postretirement benefits	2.3	2.3
Accrued salaries, wages and benefits	48.3	45.0
Income taxes payable	14.8	7.8
Taxes other than income	8.5	9.5
Other current liabilities	71.6	38.7
Total current liabilities	320.2	243.2
Long-term debt	296.4	299.3
Deferred income taxes	19.3	21.6
Pension and other postretirement benefits	112.3	126.0
Other long-term liabilities	35.1	54.1
Total Liabilities	783.3	744.2
Commitments and contingencies (Note 12)
Total Equity	679.5	654.9
Total Liabilities and Equity	$ 1,462.8	$ 1,399.1