Consolidated Statements of Income and Comprehensive Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Net Operating Revenues
Crude Oil and Condensate	$ 2,671,502	$ 2,337,742	$ 7,687,579	$ 6,132,574
Natural Gas Liquids	258,927	208,190	753,135	556,176
Natural Gas	443,108	396,123	1,508,892	1,269,604
Gains (Losses) on Mark-to-Market Commodity Derivative Contracts	469,125	(293,387)	84,119	(206,853)
Gathering, Processing and Marketing	1,196,933	872,699	3,240,139	2,755,069
Gains on Asset Dispositions, Net	60,346	8,183	75,700	185,569
Other, Net	18,675	11,846	40,279	45,956
Total	5,118,616	3,541,396	13,389,843	10,738,095
Operating Expenses
Lease and Well	368,340	299,169	1,035,632	817,057
Transportation Costs	246,067	219,790	729,883	628,538
Gathering and Processing Costs	41,621	31,121	108,015	81,522
Exploration Costs	48,955	39,429	139,221	130,968
Dry Hole Costs	16,359	19,548	30,265	59,260
Impairments	55,542	85,917	207,938	177,432
Marketing Costs	1,213,652	876,761	3,263,471	2,746,900
Depreciation, Depletion and Amortization	1,040,018	928,800	2,983,111	2,685,719
General and Administrative	96,931	98,654	270,725	257,246
Taxes Other Than Income	204,969	172,438	606,411	458,566
Total	3,332,454	2,771,627	9,374,672	8,043,208
Operating Income	1,786,162	769,769	4,015,171	2,694,887
Other Income (Expense), Net	(21,338)	11,168	(16,726)	5,867
Income Before Interest Expense and Income Taxes	1,764,824	780,937	3,998,445	2,700,754
Interest Expense
Interest Expense, Net	49,704	59,382	151,723	182,950
Income Before Income Taxes	1,715,120	721,555	3,846,722	2,517,804
Income Tax Provision	611,502	259,057	1,375,823	900,889
Net Income	1,103,618	462,498	2,470,899	1,616,915
Net Income Per Share
Basic	$ 2.03	$ 0.85	$ 4.55	$ 3.00
Diluted	$ 2.01	$ 0.85	$ 4.51	$ 2.96
Dividends Declared per Common Share	$ 0.1675	$ 0.0938	$ 0.4175	$ 0.2813
Average Number of Common Shares
Basic	543,984	540,941	543,086	539,869
Diluted	549,518	547,152	548,401	545,712
Comprehensive Income
Net Income	1,103,618	462,498	2,470,899	1,616,915
Other Comprehensive Income (Loss)
Foreign Currency Translation Adjustments	(38,886)	15,106	(27,438)	(18,472)
Foreign Currency Swap Transaction	0	1,459	50	2,498
Income Tax Related to Foreign Currency Swap Transaction	0	0	(670)	0
Interest Rate Swap Transaction	0	678	777	1,999
Income Tax Related to Interest Rate Swap Transaction	0	(244)	(281)	(719)
Other	23	27	(547)	82
Other Comprehensive Income (Loss)	(38,863)	17,026	(28,109)	(14,612)
Comprehensive Income	$ 1,064,755	$ 479,524	$ 2,442,790	$ 1,602,303