Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Current Assets:
Cash and cash equivalents	$ 436,429	$ 108,651	$ 73,597
Accounts receivable, net	577,424	421,001	523,928
Inventories, net	464,525	484,919	475,293
Current deferred income tax benefits	125,633	244,638	90,136
Other current assets	37,960	29,607	49,844
Total Current Assets	1,641,971	1,288,816	1,212,798
Property, plant and equipment	5,488,744	5,691,676	5,624,761
Allowances for depreciation, depletion and amortization	(2,415,210)	(2,288,906)	(2,246,810)
Net property, plant and equipment	3,073,534	3,402,770	3,377,951
Goodwill	2,065,644	2,068,799	2,043,320
Other noncurrent assets	145,888	108,802	105,567
Total Assets	7,438,448	7,464,392	7,338,858
Current Liabilities:
Bank overdraft		183
Accounts payable	226,837	202,476	230,206
Accrued salaries, benefits and payroll taxes	30,529	36,576	54,062
Pension and postretirement benefits	8,359	6,953	7,351
Accrued insurance and other taxes	70,509	58,356	70,653
Current maturities of long-term debt and short-term facilities	147,536	14,336	14,331
Accrued interest	22,414	16,136	22,317
Other current liabilities	69,208	61,632	38,078
Total Current Liabilities	575,392	396,648	436,998
Long-term debt	1,557,616	1,571,059	1,603,944
Pension, postretirement and postemployment benefits	229,042	249,333	144,077
Noncurrent deferred income taxes	665,712	734,583	633,951
Other noncurrent liabilities	158,106	160,021	144,275
Total Liabilities	3,185,868	3,111,644	2,963,245
Equity:
Common stock, par value $0.01 per share	$ 660	$ 671	$ 671
Preferred stock, par value $0.01 per share
Additional paid-in capital	$ 3,283,200	$ 3,243,619	$ 3,239,709
Accumulated other comprehensive loss	(112,742)	(106,159)	(43,281)
Retained earnings	1,079,764	1,213,035	1,176,121
Total Shareholders' Equity	4,250,882	4,351,166	4,373,220
Noncontrolling interests	1,698	1,582	2,393
Total Equity	4,252,580	4,352,748	4,375,613
Total Liabilities and Equity	7,438,448	7,464,392	7,338,858
Operating Permits
Current Assets:
Intangibles, net	445,855	499,487	501,734
Other Intangible Assets
Current Assets:
Intangibles, net	$ 65,556	$ 95,718	$ 97,488

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.