Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Revenues and other income:
Sales and other operating revenues, including related party	$ 4,951	$ 8,736	$ 9,246
Marketing revenues	571	2,110	2,079
Income from equity method investments	145	424	423
Net gain (loss) on disposal of assets	120	(90)	(29)
Other income	74	78	64
Total revenues and other income	5,861	11,258	11,783
Costs and expenses:
Production	1,694	2,246	2,156
Marketing, including purchases from related parties	569	2,105	2,076
Other operating	438	462	389
Exploration	1,318	793	891
Depreciation, depletion and amortization	2,957	2,861	2,500
Asset Impairment Charges	752	132	96
Taxes other than income	234	406	345
General and administrative	590	654	659
Total costs and expenses	8,552	9,659	9,112
Income from operations	(2,691)	1,599	2,671
Net interest and other	(267)	(238)	(278)
Income from continuing operations before income taxes	(2,958)	1,361	2,393
Provision for income taxes	(754)	392	1,462
Income from continuing operations	(2,204)	969	931
Discontinued operations	0	2,077	822
Net income	$ (2,204)	$ 3,046	$ 1,753
Basic:
Income from continuing operations (in dollars per basic share)	$ (3.26)	$ 1.42	$ 1.32
Discontinued operations (in dollars per basic share)	0.00	3.06	1.17
Net income (in dollars per basic share)	(3.26)	4.48	2.49
Diluted:
Income from continuing operations (in dollars per diluted share)	(3.26)	1.42	1.31
Discontinued operations (in dollars per diluted share)	0.00	3.04	1.16
Net income (in dollars per diluted share)	(3.26)	4.46	2.47
Dividends (in dollars per share)	$ 0.68	$ 0.80	$ 0.72
Weighted average shares:
Basic	677	680	705
Diluted	677	683	709