Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014	Dec. 31, 2013
Current Assets:
Cash and Cash Equivalents	$ 225,563	$ 327,420
Accounts and Notes Receivable:
Trade	299,939	332,574
Notes, Loans and Financing Receivable, Net, Current	0	25,861
Other Receivables	382,652	243,973
Inventories	145,372	157,914
Deferred Income Taxes	127,731	211,303
Recoverable Income Taxes	41,971	10,705
Prepaid Expenses	101,867	135,842
Total Current Assets	1,325,095	1,445,592
Property, Plant and Equipment:
Property, Plant and Equipment	14,463,328	13,578,509
Less-Accumulated Depreciation, Depletion and Amortization	4,499,344	4,136,247
Total Property, Plant and Equipment-Net	9,963,984	9,442,262
Other Assets:
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures	185,509	291,675
Notes, Loans and Financing Receivable, Net, Noncurrent	0	125
Other	244,347	214,013
Total Other Assets	429,856	505,813
Total Assets	11,718,935	11,393,667
Current Liabilities:
Accounts Payable	610,725	514,580
Current Portion of Long-Term Debt	12,225	11,455
Other Accrued Liabilities	610,704	565,697
Liabilities of Disposal Group, Including Discontinued Operation, Current	12,992	28,239
Total Current Liabilities	1,246,646	1,119,971
Long-Term Debt:
Long-Term Debt	3,236,172	3,115,963
Capital Lease Obligations	43,150	47,596
Total Long-Term Debt	3,279,322	3,163,559
Deferred Credits and Other Liabilities
Deferred Tax Liabilities, Net, Noncurrent	395,025	242,643
Postretirement Benefits Other Than Pensions	652,050	961,127
Pneumoconiosis Benefits	111,514	111,971
Mine Closing	321,776	320,723
Gas Well Closing	180,520	175,603
Workers' Compensation	73,398	71,468
Salary Retirement	48,231	48,252
Reclamation	34,499	40,706
Other	121,355	131,355
Total Deferred Credits and Other Liabilities	1,938,368	2,103,848
TOTAL LIABILITIES	6,464,336	6,387,378
Stockholders' Equity:
Common Stock, $.01 Par Value; 500,000,000 Shares Authorized, 230,165,816 Issued and Outstanding at June 30, 2014; 229,145,736 Issued and Outstanding at December 31, 2013	2,305	2,294
Capital in Excess of Par Value	2,412,976	2,364,592
Preferred Stock, 15,000,000 shares authorized, None issued and outstanding	0	0
Retained Earnings	2,995,238	2,964,520
Accumulated Other Comprehensive Loss	(155,920)	(325,117)
Stockholders' Equity Attributable to Parent	5,254,599	5,006,289
TOTAL LIABILITIES AND EQUITY	$ 11,718,935	$ 11,393,667