CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013
Cash flows from operating activities:
Net income (loss)	$ 221,624	$ (4,467)
Adjustments to net income (loss):
Depreciation and amortization	851,605	820,898
Depletion and other oil and gas expense	2,110	22,235
Deferred income tax expense (benefit)	(4,888)	(31,535)
Impairments and other charges		71,322
Losses on debt extinguishment	(3,212)	(211,981)
Losses (gains) on long-lived assets, net	(12,066)	12,254
Losses (gains) on investments, net	(4,930)	(90,635)
Share-based compensation	28,141	45,898
Foreign currency transaction losses (gains), net	3,416	7,021
Equity in (earnings) losses of unconsolidated affiliates, net of dividends	3,527	(1,263)
Other	(2,924)	(1,188)
Changes in operating assets and liabilities, net of effects from acquisitions:
Accounts receivable	(229,161)	(21,568)
Inventory	(34,987)	20,220
Other current assets	74,249	5,572
Other long-term assets	8,791	34,435
Trade accounts payable and accrued liabilities	168,801	11,271
Income taxes payable	(50,904)	(53,846)
Other long-term liabilities	218,728	(83,890)
Net cash provided by operating activities	1,244,344	974,715
Cash flows from investing activities:
Purchases of investments	(319)
Sales and maturities of investments	23,580	163,944
Proceeds from sales of unconsolidated affiliate		10,000
Cash paid for acquisition of businesses, net	(10,200)	(37,516)
Investment in unconsolidated affiliates	(2,061)	(5,967)
Capital expenditures	(1,344,222)	(780,711)
Proceeds from sales of assets and insurance claims	129,825	139,254
Other	(3,931)	(7)
Net cash used for investing activities	(1,207,328)	(511,003)
Cash flows from financing activities:
Increase (decrease) in cash overdrafts	(3,867)	(7,497)
Proceeds from (payments for) issuance of common shares	30,240	4,375
Dividends paid to shareholders	(41,781)	(35,357)
Proceeds from long- term debt	15,000	710,086
Reduction in short-term debt	(10,000)
Debt issuance costs		(3,505)
Reduction in long-term debt	(40,098)	(994,181)
Proceeds from (payment for) commercial paper, net	441,530	332,250
Purchase of preferred stock	(70,875)
Purchase of treasury stock	(250,037)
Reduction in revolving credit facilities	(70,000)	(590,000)
Other	(7,581)	(3,096)
Net cash used for financing activities	(7,469)	(586,925)
Effect of exchange rate changes on cash and cash equivalents	(15,009)	(5,786)
Net increase (decrease) in cash and cash equivalents	14,538	(128,999)
Cash and cash equivalents, beginning of period	389,915	524,922
Cash and cash equivalents, end of period	$ 404,453	$ 395,923