CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (USD $) In Millions, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Current assets:
Cash and cash equivalents	$ 221.7	$ 161.9
Short-term investments	7.5	12.4
Accounts receivable, net	198.2	175.0
Inventories	176.7	162.2
Deferred income taxes	9.3	7.7
Other current assets	30.1	38.1
Total current assets	643.5	557.3
Property, plant and equipment	1,328.4	1,274.8
Less accumulated depreciation and amortization	646.4	605.8
Property, plant and equipment, net	682.0	669.0
Investments in affiliated companies	59.1	59.8
Goodwill	113.4	112.5
Deferred income taxes	92.4	90.3
Intangible assets, net	48.5	50.6
Other noncurrent assets	25.6	24.5
Total Assets	1,664.5	1,564.0
Current liabilities:
Notes payable and other current debt	18.9	32.7
Accounts payable	86.3	102.9
Pension and other postretirement benefits	3.0	2.8
Accrued salaries, wages and benefits	55.8	56.5
Income taxes payable	26.4	15.6
Taxes other than income	8.0	7.8
Other current liabilities	48.4	43.5
Total current liabilities	246.8	261.8
Long-term debt	381.1	378.8
Deferred income taxes	19.6	20.8
Pension and other postretirement benefits	126.1	135.4
Other long-term liabilities	54.2	38.3
Total Liabilities	827.8	835.1
Commitments and contingencies (Note 13)
Equity:
Preferred stock, 3.0 million shares authorized; 0 shares issued and outstanding	0	0
Common stock, $0.25 par value; 100.0 million shares authorized; issued: 69.9 million and 68.8 million; outstanding: 69.7 million and 68.6 million	17.5	17.2
Capital in excess of par value	103.9	70.7
Retained earnings	788.6	719.9
Accumulated other comprehensive loss	(69.5)	(75.9)
Treasury stock, at cost (0.2 million shares in 2013 and 2012)	(3.8)	(3.0)
Total Equity	836.7	728.9
Total Liabilities and Equity	$ 1,664.5	$ 1,564.0