CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Mar. 31, 2013
Assets
Cash and cash equivalents	$ 268,773	$ 193,738	$ 188,081
Restricted cash	63,024	0	0
Accounts and notes receivable
Accounts and notes receivable, gross	353,601	344,475	328,202
Less: Allowance for doubtful accounts	(5,264)	(4,854)	(6,030)
Accounts and notes receivable, net	348,337	339,621	322,172
Inventories
Finished products	258,007	270,603	267,783
Raw materials	19,431	29,996	27,148
Products in process	875	6,613	6,168
Operating supplies and other	27,520	37,394	39,475
Inventories	305,833	344,606	340,574
Current deferred income taxes	39,591	40,423	38,844
Prepaid expenses	28,184	22,549	24,762
Assets held for sale	0	10,559	12,929
Total current assets	1,053,742	951,496	927,362
Investments and long-term receivables	42,137	42,387	41,707
Property, plant & equipment
Property, plant & equipment, cost	6,340,034	6,933,602	6,675,569
Reserve for depreciation, depletion & amortization	(3,446,744)	(3,621,585)	(3,507,394)
Property, plant & equipment, net	2,893,290	3,312,017	3,168,175
Goodwill	3,081,521	3,081,521	3,086,043
Other intangible assets, net	633,870	697,578	694,659
Other noncurrent assets	167,675	174,144	160,529
Total assets	7,872,235	8,259,143	8,078,475
Liabilities
Current maturities of long-term debt	171	170	140,604
Trade payables and accruals	150,628	139,345	116,677
Other current liabilities	190,069	159,620	212,572
Total current liabilities	340,868	299,135	469,853
Long-term debt	2,006,782	2,522,243	2,525,420
Noncurrent deferred income taxes	693,234	701,075	614,405
Deferred revenue	218,946	219,743	73,392
Other noncurrent liabilities	581,286	578,841	680,476
Total liabilities	3,841,116	4,321,037	4,363,546
Other commitments and contingencies (Note 8)
Equity
Common stock, $1 par value, Authorized 480,000 shares, Issued 130,802, 130,200 and 129,952 shares, respectively	130,802	130,200	129,952
Capital in excess of par value	2,651,949	2,611,703	2,585,696
Retained earnings	1,343,294	1,295,834	1,220,512
Accumulated other comprehensive loss	(94,926)	(99,631)	(221,231)
Total equity	4,031,119	3,938,106	3,714,929
Total liabilities and equity	$ 7,872,235	$ 8,259,143	$ 8,078,475