Consolidated Statements of Income (USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Revenues and other income:
Sales and other operating revenues, including related party	$ 8,736	$ 9,246	$ 9,237
Marketing revenues	2,110	2,079	2,729
Income from equity method investments	424	423	370
Net gain (loss) on disposal of assets	(90)	(29)	127
Other income	78	64	23
Total revenues and other income	11,258	11,783	12,486
Costs and expenses:
Production	2,246	2,156	2,079
Marketing, including purchases from related parties	2,105	2,076	2,734
Other operating	462	389	364
Exploration	793	891	685
Depreciation, depletion and amortization	2,861	2,500	2,008
Impairments	132	96	371
Taxes other than income	406	345	243
General and administrative	654	659	676
Total costs and expenses	9,659	9,112	9,160
Income from operations	1,599	2,671	3,326
Net interest and other	(238)	(278)	(222)
Income from continuing operations before income taxes	1,361	2,393	3,104
Provision for income taxes	392	1,462	2,248
Income from continuing operations	969	931	856
Discontinued operations	2,077	822	726
Net income	$ 3,046	$ 1,753	$ 1,582
Basic:
Income from continuing operations (in dollars per basic share)	$ 1.42	$ 1.32	$ 1.21
Discontinued operations (in dollars per basic share)	$ 3.06	$ 1.17	$ 1.03
Net income (in dollars per basic share)	$ 4.48	$ 2.49	$ 2.24
Diluted:
Income from continuing operations (in dollars per diluted share)	$ 1.42	$ 1.31	$ 1.21
Discontinued operations (in dollars per diluted share)	$ 3.04	$ 1.16	$ 1.02
Net income (in dollars per diluted share)	$ 4.46	$ 2.47	$ 2.23
Dividends (in dollars per share)	$ 0.80	$ 0.72	$ 0.68
Weighted average shares:
Basic	680	705	706
Diluted	683	709	710