CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Assets
Cash and cash equivalents	$ 74,736	$ 141,273	$ 227,684
Restricted cash	0	0	62,087
Accounts and notes receivable
Accounts and notes receivable, gross	495,781	378,947	439,938
Less: Allowance for doubtful accounts	(5,370)	(5,105)	(5,606)
Accounts and notes receivable, net	490,411	373,842	434,332
Inventories
Finished products	292,932	275,172	260,111
Raw materials	21,610	19,741	20,458
Products in process	1,461	1,250	1,104
Operating supplies and other	25,825	25,641	28,041
Inventories	341,828	321,804	309,714
Current deferred income taxes	39,562	39,726	40,858
Prepaid expenses	75,663	28,640	27,309
Assets held for sale	0	15,184	0
Total current assets	1,022,200	920,469	1,101,984
Investments and long-term receivables	41,603	41,650	42,128
Property, plant & equipment
Property, plant & equipment, cost	6,752,916	6,608,842	6,396,658
Reserve for depreciation, depletion & amortization	(3,637,392)	(3,537,212)	(3,494,896)
Property, plant & equipment, net	3,115,524	3,071,630	2,901,762
Goodwill	3,094,824	3,094,824	3,081,521
Other intangible assets, net	767,995	758,243	633,442
Other noncurrent assets	153,737	154,281	150,001
Total assets	8,195,883	8,041,097	7,910,838
Liabilities
Current maturities of long-term debt	14,124	150,137	158
Short-term debt (line of credit)	138,500	0	0
Trade payables and accruals	190,904	145,148	178,239
Other current liabilities	163,112	156,073	171,008
Liabilities of assets held for sale	0	520	0
Total current liabilities	506,640	451,878	349,405
Long-term debt	1,893,737	1,834,642	1,983,319
Noncurrent deferred income taxes	686,171	691,137	704,544
Deferred revenue	211,429	213,968	217,589
Other noncurrent liabilities	670,949	672,773	569,794
Total liabilities	$ 3,968,926	$ 3,864,398	$ 3,824,651
Other commitments and contingencies (Note 8)
Equity
Common stock, $1 par value, Authorized 480,000 shares, Issued 132,984, 131,907 and 130,910 shares, respectively	$ 132,984	$ 131,907	$ 130,910
Capital in excess of par value	2,791,232	2,734,661	2,665,793
Retained earnings	1,453,752	1,471,845	1,382,711
Accumulated other comprehensive loss	(151,011)	(161,714)	(93,227)
Total equity	4,226,957	4,176,699	4,086,187
Total liabilities and equity	$ 8,195,883	$ 8,041,097	$ 7,910,838