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	$ 2,470,899	$ 1,616,915
Items Not Requiring (Providing) Cash
Depreciation, Depletion and Amortization	2,983,111	2,685,719
Impairments	207,938	177,432
Stock-Based Compensation Expenses	103,636	103,171
Deferred Income Taxes	974,522	657,686
Gains on Asset Dispositions, Net	(75,700)	(185,569)
Other, Net	17,188	460
Dry Hole Costs	30,265	59,260
Mark-to-Market Commodity Derivative Contracts
Total (Gains) Losses	(84,119)	206,853
Net Cash Received from (Payments for) Settlements of Commodity Derivative Contracts	(188,937)	115,323
Excess Tax Benefits from Stock-Based Compensation	(87,827)	(50,230)
Other, Net	8,701	16,222
Changes in Components of Working Capital and Other Assets and Liabilities
Accounts Receivable	(341,043)	(213,746)
Inventories	(119,166)	61,147
Accounts Payable	566,753	145,199
Accrued Taxes Payable	176,412	73,197
Other Assets	(61,966)	(78,799)
Other Liabilities	66,618	10,889
Changes in Components of Working Capital Associated with Investing and Financing Activities	(108,568)	(72,945)
Net Cash Provided by Operating Activities	6,538,717	5,328,184
Investing Cash Flows
Additions to Oil and Gas Properties	(5,653,035)	(5,084,335)
Additions to Other Property, Plant and Equipment	(587,178)	(271,136)
Proceeds from Sales of Assets	91,335	587,273
Changes in Restricted Cash	(91,238)	(68,061)
Changes in Components of Working Capital Associated with Investing Activities	108,999	72,916
Net Cash Used in Investing Activities	(6,131,117)	(4,763,343)
Financing Cash Flows
Long-Term Debt Borrowings	496,220	0
Long-Term Debt Repayments	(500,000)	0
Settlement of Foreign Currency Swap	(31,573)	0
Dividends Paid	(187,670)	(147,731)
Excess Tax Benefits from Stock-Based Compensation	87,827	50,230
Treasury Stock Purchased	(114,824)	(55,562)
Proceeds from Stock Options Exercised and Employee Stock Purchase Plan	11,740	30,080
Debt Issuance Costs	(895)	0
Repayment of Capital Lease Obligation	(4,457)	(4,318)
Other, Net	(431)	29
Net Cash Used in Financing Activities	(244,063)	(127,272)
Effect of Exchange Rate Changes on Cash	(601)	4,813
Increase in Cash and Cash Equivalents	162,936	442,382
Cash and Cash Equivalents at Beginning of Period	1,318,209	876,435
Cash and Cash Equivalents at End of Period	$ 1,481,145	$ 1,318,817