CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012		Jun. 30, 2013	Jun. 30, 2012
REVENUES
Sales and other operating revenues	$ 7,201,508	$ 7,146,728	[1]	$ 13,849,452	$ 14,100,501	[1]
Gain (loss) on sale of assets	(318)	35	[1]	(278)	125	[1]
Interest and other income	16,652	10,842	[1]	8,622	13,915	[1]
Total revenues	7,217,842	7,157,605	[1]	13,857,796	14,114,541	[1]
COSTS AND EXPENSES
Crude oil and product purchases	5,452,526	5,631,306	[1]	10,452,171	11,145,685	[1]
Operating expenses	526,142	532,374	[1]	1,125,244	1,020,859	[1]
Exploration expenses, including undeveloped lease amortization	88,772	96,724	[1]	197,265	149,651	[1]
Selling and general expenses	115,267	87,619	[1]	225,009	175,778	[1]
Depreciation, depletion and amortization	412,288	309,822	[1]	806,042	642,410	[1]
Impairment of assets	21,587	0	[1]	21,587	0	[1]
Accretion of asset retirement obligations	12,239	9,601	[1]	24,404	19,047	[1]
Interest expense	29,593	11,598	[1]	56,621	23,337	[1]
Interest capitalized	(14,478)	(9,476)	[1]	(27,866)	(15,899)	[1]
Total costs and expenses	6,643,936	6,669,568	[1]	12,880,477	13,160,868	[1]
Income from continuing operations before income taxes	573,906	488,037	[1]	977,319	953,673	[1]
Income tax expense	241,778	196,731	[1]	437,221	380,929	[1]
Income from continuing operations	332,128	291,306	[1]	540,098	572,744	[1]
Income from discontinued operations, net of taxes	70,516	4,131	[1]	223,145	12,764	[1]
NET INCOME	$ 402,644	$ 295,437	[1]	$ 763,243	$ 585,508	[1]
PER COMMON SHARE - BASIC
Income from continuing operations	$ 1.76	$ 1.50	[1]	$ 2.85	$ 2.95	[1]
Income from discontinued operations	$ 0.37	$ 0.02	[1]	$ 1.17	$ 0.07	[1]
Net income	$ 2.13	$ 1.52	[1]	$ 4.02	$ 3.02	[1]
PER COMMON SHARE - DILUTED
Income from continuing operations	$ 1.75	$ 1.50	[1]	$ 2.83	$ 2.94	[1]
Income from discontinued operations	$ 0.37	$ 0.02	[1]	$ 1.17	$ 0.07	[1]
Net income	$ 2.12	$ 1.52	[1]	$ 4.00	$ 3.01	[1]
Average common shares outstanding
Basic	189,002,146	194,208,795	[1]	189,753,673	194,050,950	[1]
Diluted	189,944,793	194,846,202	[1]	190,702,248	194,820,285	[1]

[1] Reclassified to conform to current presentation.