Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Assets
Cash and cash equivalents	$ 275,478	$ 155,839
Restricted cash	0	81
Accounts and notes receivable
Customers, less allowance for doubtful accounts 2012 - $6,198; 2011 - $6,498	277,539	299,166
Other	19,441	15,727
Inventories	335,022	327,657
Current deferred income taxes	40,696	43,032
Prepaid expenses	21,713	21,598
Assets held for sale	15,083	0
Total current assets	984,972	863,100
Investments and long-term receivables	42,081	29,004
Property, plant & equipment, net	3,159,185	3,418,179
Goodwill	3,086,716	3,086,716
Other intangible assets, net	692,532	697,502
Other noncurrent assets	161,113	134,813
Total assets	8,126,599	8,229,314
Liabilities
Current maturities of long-term debt	150,602	134,762
Trade payables and accruals	113,337	103,931
Accrued salaries, wages and management incentives	62,695	60,132
Accrued interest	11,424	12,045
Other accrued liabilities	97,552	95,383
Liabilities of assets held for sale	801	0
Total current liabilities	436,411	406,253
Long-term debt	2,526,401	2,680,677
Noncurrent deferred income taxes	657,367	732,528
Deferred management incentive and other compensation	21,756	29,275
Pension benefits	303,036	225,846
Other postretirement benefits	103,134	124,960
Asset retirement obligations	150,072	153,979
Deferred revenue (Note 19)	73,583	0
Other noncurrent liabilities	93,777	84,179
Total liabilities	4,365,537	4,437,697
Other commitments and contingencies (Note 12)
Equity
Common stock, $1 par value - 129,721 shares issued as of 2012 and 129,245 shares issued as of 2011	129,721	129,245
Capital in excess of par value	2,580,209	2,544,740
Retained earnings	1,276,649	1,334,476
Accumulated other comprehensive loss	(225,517)	(216,844)
Total equity	3,761,062	3,791,617
Total liabilities and equity	$ 8,126,599	$ 8,229,314