Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Net Operating Revenues
Crude Oil and Condensate	$ 2,618,975	$ 2,012,999	$ 5,016,077	$ 3,794,832
Natural Gas Liquids	247,973	178,457	494,208	347,986
Natural Gas	509,091	462,602	1,065,784	873,481
Gains (Losses) on Mark-to-Market Commodity Derivative Contracts	(229,270)	191,490	(385,006)	86,534
Gathering, Processing and Marketing	1,027,795	959,413	2,043,206	1,882,370
Gains on Asset Dispositions, Net	3,856	13,153	15,354	177,386
Other, Net	9,136	22,071	21,604	34,110
Total	4,187,556	3,840,185	8,271,227	7,196,699
Operating Expenses
Lease and Well	346,458	268,888	667,292	517,888
Transportation Costs	240,579	224,491	483,816	408,748
Gathering and Processing Costs	32,470	25,897	66,394	50,401
Exploration Costs	42,208	47,323	90,266	91,539
Dry Hole Costs	5,558	35,750	13,906	39,712
Impairments	39,035	37,967	152,396	91,515
Marketing Costs	1,043,515	965,490	2,049,819	1,870,139
Depreciation, Depletion and Amortization	996,602	910,531	1,943,093	1,756,919
General and Administrative	90,932	80,607	173,794	158,592
Taxes Other Than Income	205,469	151,197	401,442	286,128
Total	3,042,826	2,748,141	6,042,218	5,271,581
Operating Income	1,144,730	1,092,044	2,229,009	1,925,118
Other Income (Expense), Net	7,950	4,833	4,612	(5,301)
Income Before Interest Expense and Income Taxes	1,152,680	1,096,877	2,233,621	1,919,817
Interest Expense
Interest Expense, Net	51,867	61,647	102,019	123,568
Income Before Income Taxes	1,100,813	1,035,230	2,131,602	1,796,249
Income Tax Provision	394,460	375,538	764,321	641,832
Net Income	706,353	659,692	1,367,281	1,154,417
Net Income Per Share
Basic	$ 1.30	$ 1.22	$ 2.52	$ 2.14
Diluted	$ 1.29	$ 1.21	$ 2.49	$ 2.12
Dividends Declared per Common Share	$ 0.1250	$ 0.0938	$ 0.2500	$ 0.1875
Average Number of Common Shares
Basic	543,099	540,033	542,675	539,330
Diluted	548,676	545,477	548,046	544,946
Comprehensive Income
Net Income	706,353	659,692	1,367,281	1,154,417
Other Comprehensive Income (Loss)
Foreign Currency Translation Adjustments	24,378	(19,314)	11,448	(33,578)
Foreign Currency Swap Transaction	0	(662)	50	1,039
Income Tax Related to Foreign Currency Swap Transaction	0	0	(670)	0
Interest Rate Swap Transaction	0	584	777	1,321
Income Tax Related to Interest Rate Swap Transaction	0	(210)	(281)	(475)
Other	(593)	27	(570)	55
Other Comprehensive Income (Loss)	23,785	(19,575)	10,754	(31,638)
Comprehensive Income	$ 730,138	$ 640,117	$ 1,378,035	$ 1,122,779