CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Assets
Cash and cash equivalents	$ 168,681	$ 141,273	$ 91,868
Accounts and notes receivable
Accounts and notes receivable, gross	558,755	378,947	485,176
Less: Allowance for doubtful accounts	(5,770)	(5,105)	(5,428)
Accounts and notes receivable, net	552,985	373,842	479,748
Inventories
Finished products	275,717	275,172	254,931
Raw materials	21,680	19,741	22,987
Products in process	1,161	1,250	1,331
Operating supplies and other	28,148	25,641	27,335
Inventories	326,706	321,804	306,584
Current deferred income taxes	39,301	39,726	41,745
Prepaid expenses	56,017	28,640	34,673
Assets held for sale	0	15,184	0
Total current assets	1,143,690	920,469	954,618
Investments and long-term receivables	40,516	41,650	42,117
Property, plant & equipment
Property, plant & equipment, cost	6,803,588	6,608,842	6,608,342
Reserve for depreciation, depletion & amortization	(3,683,961)	(3,537,212)	(3,539,772)
Property, plant & equipment, net	3,119,627	3,071,630	3,068,570
Goodwill	3,094,824	3,094,824	3,095,317
Other intangible assets, net	766,695	758,243	758,863
Other noncurrent assets	151,514	154,281	150,160
Total assets	8,316,866	8,041,097	8,069,645
Liabilities
Current maturities of long-term debt	130	150,137	145
Trade payables and accruals	195,536	145,148	167,837
Other current liabilities	216,411	156,073	196,830
Liabilities of assets held for sale	0	520	0
Total current liabilities	412,077	451,878	364,812
Long-term debt	1,979,493	1,834,642	1,984,075
Noncurrent deferred income taxes	692,643	691,137	733,613
Deferred revenue	209,651	213,968	216,205
Other noncurrent liabilities	659,725	672,773	569,841
Total liabilities	$ 3,953,589	$ 3,864,398	$ 3,868,546
Other commitments and contingencies (Note 8)
Equity
Common stock, $1 par value, Authorized 480,000 shares, Issued 133,315, 131,907 and 131,703 shares, respectively	$ 133,315	$ 131,907	$ 131,703
Capital in excess of par value	2,812,593	2,734,661	2,719,169
Retained earnings	1,564,215	1,471,845	1,441,742
Accumulated other comprehensive loss	(146,846)	(161,714)	(91,515)
Total equity	4,363,277	4,176,699	4,201,099
Total liabilities and equity	$ 8,316,866	$ 8,041,097	$ 8,069,645