CONSOLIDATED STATEMENTS OF INCOME (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
REVENUES
Sales and other operating revenues	$ 6,647,944	$ 6,953,861	[1]
Gain on sale of assets	40	90	[1]
Interest and other income (loss)	(8,030)	2,985	[1]
Total revenues	6,639,954	6,956,936	[1]
COSTS AND EXPENSES
Crude oil and product purchases	4,999,645	5,514,379	[1]
Operating expenses	599,102	488,485	[1]
Exploration expenses, including undeveloped lease amortization	108,493	52,927	[1]
Selling and general expenses	109,742	88,159	[1]
Depreciation, depletion and amortization	393,754	332,588	[1]
Accretion of asset retirement obligations	12,165	9,446	[1]
Interest expense	27,028	11,739	[1]
Interest capitalized	(13,388)	(6,423)	[1]
Total costs and expenses	6,236,541	6,491,300	[1]
Income from continuing operations before income taxes	403,413	465,636	[1]
Income tax expense	195,443	184,198	[1]
Income from continuing operations	207,970	281,438	[1]
Income from discontinued operations, net of taxes	152,629	8,633	[1]
NET INCOME	$ 360,599	$ 290,071	[1]
NET INCOME PER COMMON - BASIC
Income from continuing operations	$ 1.09	$ 1.45	[1]
Income from discontinued operations	$ 0.80	$ 0.05	[1]
Net income	$ 1.89	$ 1.50	[1]
NET INCOME PER COMMON - DILUTED
Income from continuing operations	$ 1.08	$ 1.44	[1]
Income from discontinued operations	$ 0.80	$ 0.05	[1]
Net income	$ 1.88	$ 1.49	[1]
Average Common shares outstanding
Basic	190,810,201	193,922,260	[1]
Diluted	191,765,395	194,884,733	[1]

[1] Reclassified to conform to current presentation.