CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Millions, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 190.6	$ 161.9
Short-term investments	7.5	12.4
Accounts receivable, net	195.3	175.0
Inventories	176.5	162.2
Deferred income taxes	9.6	7.7
Other current assets	33.8	38.1
Total current assets	613.3	557.3
Property, plant and equipment	1,289.1	1,274.8
Less accumulated depreciation and amortization	625.7	605.8
Property, plant and equipment, net	663.4	669.0
Investments in affiliated companies	58.0	59.8
Goodwill	111.7	112.5
Deferred income taxes	92.0	90.3
Intangible assets, net	49.1	50.6
Other noncurrent assets	25.2	24.5
Total Assets	1,612.7	1,564.0
Current liabilities:
Notes payable and other current debt	0.1	32.7
Accounts payable	88.4	102.9
Pension and other postretirement benefits	2.9	2.8
Accrued salaries, wages and benefits	50.0	56.5
Income taxes payable	24.2	15.6
Taxes other than income	8.0	7.8
Other current liabilities	45.1	43.5
Total current liabilities	218.7	261.8
Long-term debt	394.7	378.8
Deferred income taxes	19.3	20.8
Pension and other postretirement benefits	138.0	135.4
Other long-term liabilities	57.8	38.3
Total Liabilities	828.5	835.1
Commitments and contingencies (Note 13)
Total Equity	784.2	728.9
Total Liabilities and Equity	$ 1,612.7	$ 1,564.0