CONDENSED CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013
Assets
Cash and cash equivalents	$ 227,684	$ 193,738	$ 86,979
Restricted cash	62,087	0	0
Accounts and notes receivable
Accounts and notes receivable, gross	439,938	344,475	410,021
Less: Allowance for doubtful accounts	(5,606)	(4,854)	(5,339)
Accounts and notes receivable, net	434,332	339,621	404,682
Inventories
Finished products	260,111	270,603	266,489
Raw materials	20,458	29,996	29,863
Products in process	1,104	6,613	5,415
Operating supplies and other	28,041	37,394	38,720
Inventories	309,714	344,606	340,487
Current deferred income taxes	40,858	40,423	39,275
Prepaid expenses	27,309	22,549	27,300
Assets held for sale	0	10,559	12,926
Total current assets	1,101,984	951,496	911,649
Investments and long-term receivables	42,128	42,387	43,194
Property, plant & equipment
Property, plant & equipment, cost	6,396,658	6,933,602	6,735,203
Reserve for depreciation, depletion & amortization	(3,494,896)	(3,621,585)	(3,519,862)
Property, plant & equipment, net	2,901,762	3,312,017	3,215,341
Goodwill	3,081,521	3,081,521	3,081,521
Other intangible assets, net	633,442	697,578	698,471
Other noncurrent assets	173,061	174,144	170,048
Total assets	7,933,898	8,259,143	8,120,224
Liabilities
Current maturities of long-term debt	158	170	161
Short-term debt	0	0	100,000
Trade payables and accruals	178,239	139,345	128,142
Other current liabilities	171,008	159,620	163,466
Total current liabilities	349,405	299,135	391,769
Long-term debt	2,006,379	2,522,243	2,524,420
Noncurrent deferred income taxes	704,544	701,075	664,967
Deferred revenue	217,589	219,743	73,068
Other noncurrent liabilities	569,794	578,841	652,480
Total liabilities	3,847,711	4,321,037	4,306,704
Other commitments and contingencies (Note 8)
Equity
Common stock, $1 par value, Authorized 480,000 shares, Issued 130,910, 130,200 and 129,963 shares, respectively	130,910	130,200	129,963
Capital in excess of par value	2,665,793	2,611,703	2,592,239
Retained earnings	1,382,711	1,295,834	1,247,984
Accumulated other comprehensive loss	(93,227)	(99,631)	(156,666)
Total equity	4,086,187	3,938,106	3,813,520
Total liabilities and equity	$ 7,933,898	$ 8,259,143	$ 8,120,224