Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014
Current Assets:
Cash and cash equivalents	$ 44,169	$ 108,651	$ 34,329
Accounts receivable, net	497,468	421,001	343,784
Inventories, net	479,856	484,919	348,168
Current deferred income tax benefits	234,594	244,638	72,413
Assets held for sale	426,495
Other current assets	82,667	29,607	78,007
Total Current Assets	1,765,249	1,288,816	876,701
Property, plant and equipment	5,421,449	5,691,676	3,970,472
Allowances for depreciation, depletion and amortization	(2,371,926)	(2,288,906)	(2,195,098)
Net property, plant and equipment	3,049,523	3,402,770	1,775,374
Goodwill	2,065,882	2,068,799	616,621
Other noncurrent assets	104,056	108,802	40,451
Total Assets	7,499,654	7,464,392	3,356,043
Current Liabilities:
Bank overdraft		183
Accounts payable	201,235	202,476	139,442
Accrued salaries, benefits and payroll taxes	27,590	36,576	17,393
Pension and postretirement benefits	8,133	6,953	2,356
Accrued insurance and other taxes	57,078	58,356	33,014
Current maturities of long-term debt and short-term facilities	15,966	14,336	12,404
Accrued interest	16,165	16,136	7,386
Other current liabilities	37,667	61,632	32,730
Total Current Liabilities	363,834	396,648	244,725
Long-term debt	1,642,035	1,571,059	1,072,397
Pension, postretirement and postemployment benefits	272,461	249,333	82,662
Noncurrent deferred income taxes	756,526	734,583	275,279
Other noncurrent liabilities	154,365	160,021	113,981
Total Liabilities	3,189,221	3,111,644	1,789,044
Equity:
Common stock, par value $0.01 per share	$ 668	$ 671	$ 463
Preferred stock, par value $0.01 per share
Additional paid-in capital	$ 3,274,098	$ 3,243,619	$ 456,989
Accumulated other comprehensive loss	(112,814)	(106,159)	(42,141)
Retained earnings	1,146,821	1,213,035	1,149,388
Total Shareholders' Equity	4,308,773	4,351,166	1,564,699
Noncontrolling interests	1,660	1,582	2,300
Total Equity	4,310,433	4,352,748	1,566,999
Total Liabilities and Equity	7,499,654	7,464,392	3,356,043
Operating Permits
Current Assets:
Intangibles, net	447,702	499,487	16,829
Other Intangible Assets
Current Assets:
Intangibles, net	$ 67,242	$ 95,718	$ 30,067

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.