Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current Assets
Cash and cash equivalents	$ 139.9	$ 153.7
Accounts receivable, net of allowances of $16.2 in 2012 and $14.3 in 2011	121.2	96.7
Accounts receivable from affiliates	28.1	4.0
Inventories, net	169.4	161.3
Deferred income taxes	15.3	24.5
Prepaid expenses and other	11.4	10.6
Assets held for sale	1.5	31.4
Current assets of discontinued operations	0	893.9
Total Current Assets	486.8	1,376.1
Property, Plant and Equipment, Net	183.0	107.2
Goodwill	6.4	0
Coal Supply Agreements and Other Intangibles, Net	63.4	57.9
Other Non-current Assets	36.7	48.9
Long-term Assets of Discontinued Operations	0	218.6
Total Assets	776.3	1,808.7
Current Liabilities
Accounts payable	127.5	94.2
Revolving credit agreements of subsidiaries — not guaranteed by the parent company	35.3	67.0
Current maturities of long-term debt of subsidiaries — not guaranteed by the parent company	7.0	6.7
Accrued payroll	24.2	19.1
Other current liabilities	33.2	42.8
Current liabilities of discontinued operations	0	661.4
Total Current Liabilities	227.2	891.2
Long-term Debt of Subsidiaries — not guaranteed by the parent company	135.4	74.5
Mine closing reserves	29.0	18.2
Pension and other Postretirement Obligations	24.4	29.3
Long-term Deferred Income Taxes	27.3	20.0
Other Long-term Liabilities	51.6	39.8
Long-term Liabilities of Discontinued Operations	0	158.7
Total Liabilities	494.9	1,231.7
Common stock:
Capital in excess of par value	24.5	22.7
Retained earnings	313.6	619.7
Accumulated other comprehensive income (loss)	(65.1)	(74.6)
Total Stockholders’ Equity	281.4	576.2
Noncontrolling Interest	0	0.8
Total Equity	281.4	577.0
Total Liabilities and Equity	776.3	1,808.7
Common Class A
Common stock:
Common stock	6.8	6.8
Common Class B
Common stock:
Common stock	$ 1.6	$ 1.6