Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Cash Flows from Operating Activities
Net Income (Loss)	$ (4,240,219)	$ 2,470,899
Items Not Requiring (Providing) Cash
Depreciation, Depletion and Amortization	2,544,187	2,983,111
Impairments	6,445,375	207,938
Stock-Based Compensation Expenses	101,926	103,636
Deferred Income Taxes	(2,377,030)	974,522
(Gains) Losses on Asset Dispositions, Net	5,142	(75,700)
Other, Net	3,735	17,188
Dry Hole Costs	14,317	30,265
Mark-to-Market Commodity Derivative Contracts
Total Gains	(56,954)	(84,119)
Net Cash Received from (Payments for) Settlements of Commodity Derivative Contracts	661,021	(188,937)
Excess Tax Benefits from Stock-Based Compensation	(24,219)	(87,827)
Other, Net	8,904	8,701
Changes in Components of Working Capital and Other Assets and Liabilities
Accounts Receivable	448,311	(341,043)
Inventories	27,007	(119,166)
Accounts Payable	(1,310,211)	566,753
Accrued Taxes Payable	77,575	176,412
Other Assets	146,965	(61,966)
Other Liabilities	(15,683)	66,618
Changes in Components of Working Capital Associated with Investing and Financing Activities	519,203	(108,568)
Net Cash Provided by Operating Activities	2,979,352	6,538,717
Investing Cash Flows
Additions to Oil and Gas Properties	(3,918,065)	(5,653,035)
Additions to Other Property, Plant and Equipment	(252,295)	(587,178)
Proceeds from Sales of Assets	144,285	91,335
Changes in Restricted Cash	0	(91,238)
Changes in Components of Working Capital Associated with Investing Activities	(519,323)	108,999
Net Cash Used in Investing Activities	(4,545,398)	(6,131,117)
Financing Cash Flows
Net Commercial Paper Borrowings	29,700	0
Long-Term Debt Borrowings	990,225	496,220
Long-Term Debt Repayments	(500,000)	(500,000)
Settlement of Foreign Currency Swap	0	(31,573)
Dividends Paid	(274,577)	(187,670)
Excess Tax Benefits from Stock-Based Compensation	24,219	87,827
Treasury Stock Purchased	(43,419)	(114,824)
Proceeds from Stock Options Exercised and Employee Stock Purchase Plan	14,967	11,740
Debt Issuance Costs	(5,933)	(895)
Repayment of Capital Lease Obligation	(4,599)	(4,457)
Other, Net	120	(431)
Net Cash Provided by (Used in) Financing Activities	230,703	(244,063)
Effect of Exchange Rate Changes on Cash	(9,181)	(601)
Increase (Decrease) in Cash and Cash Equivalents	(1,344,524)	162,936
Cash and Cash Equivalents at Beginning of Period	2,087,213	1,318,209
Cash and Cash Equivalents at End of Period	$ 742,689	$ 1,481,145