Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Operating Activities:
Net Income (Loss)	$ 659,056	$ 388,073	$ 632,497
Adjustments to Reconcile Net Income to Net Cash Provided By Operating Activities:
Discontinued Operation, Income (Loss) from Discontinued Operation During Phase-out Period, Net of Tax	(579,792)	(70,114)	49,178
Depreciation, Depletion and Amortization	461,122	427,115	430,577
Share-based Compensation	56,987	41,127	42,131
(Gain) Loss on Sale of Assets	67,480	282,006	45,673
Gains (Losses) on Extinguishment of Debt	0	0	16,090
Deferred Income Tax Expense (Benefit)	(36,777)	10,899	(2,373)
Equity in Earnings of Affiliates	(33,133)	(27,048)	(24,663)
Changes in Operating Assets:
Accounts and Notes Receivable	(135,970)	20,218	83,770
Inventories	(12,894)	(21,166)	(5,509)
Prepaid Expenses	3,219	(12,435)	(3,047)
Changes in Other Assets	(31,146)	7,041	(23,534)
Changes in Operating Liabilities:
Accounts Payable	(99,944)	(23,918)	142,843
Other Operating Liabilities	(31,701)	(50,790)	78,530
Changes in Other Liabilities	5,844	12,876	38,413
Other	(42,597)	(24,786)	(23,001)
Net Cash Provided by (Used in) Operating Activities, Continuing Operations	553,570	457,342	1,328,871
Cash Provided by (Used in) Operating Activities, Discontinued Operations	105,206	270,771	198,735
Net Cash Provided by Operating Activities	658,776	728,113	1,527,606
Investing Activities:
Capital Expenditures	(1,496,056)	(1,245,497)	(1,178,375)
Increase (Decrease) in Restricted Cash	68,673	(48,294)	0
Proceeds from Sales of Assets	483,969	645,621	747,285
Net Investment in Equity Affiliates	(35,712)	(23,451)	55,876
Net Cash Provided by (Used in) Investing Activities, Continuing Operations	(979,126)	(671,621)	(375,214)
Cash Provided by (Used in) Investing Activities, Discontinued Operations	777,145	(328,789)	(203,310)
Net Cash Used in Investing Activities	(201,981)	(1,000,410)	(578,524)
Financing Activities:
(Payments on) Proceeds from Short-Term Borrowings	0	0	(284,000)
Payments on Miscellaneous Borrowings	(31,544)	16,195	(11,080)
Payments on Securitzation Facility	(37,846)	37,846	(200,000)
Payments On Long Term Notes Including Redemption Premium	0	0	(265,785)
Proceeds from Issuance of Long-Term Notes	0	0	250,000
Excess Tax Benefit (Tax Deficiency) from Share-based Compensation, Financing Activities	2,929	8,678	8,281
Dividends Paid	(85,832)	(142,278)	(96,356)
Proceeds from Issuance of Common Stock	3,727	8,278	0
Issuance of Treasury Stock	(2,151)	(9,485)	9,033
Debt Issuance and Financing Fees	0	(210)	(15,686)
Net Cash Provided by (Used in) Financing Activities, Continuing Operations	(150,717)	(80,976)	(605,593)
Cash Provided by (Used in) Financing Activities, Discontinued Operations	(520)	(601)	(547)
Net Cash (Used in) Provided by Financing Activities	(151,237)	(81,577)	(606,140)
Net Increase in Cash and Cash Equivalents	305,558	(353,874)	342,942
Cash and Cash Equivalents at Beginning of Period	21,862	375,736
Cash and Cash Equivalents at End of Period	$ 327,420	$ 21,862	$ 375,736