Consolidated Statements of Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Revenues and other income:
Sales and other operating revenues, including related party	$ 4,211	$ 2,930	$ 4,136
Marketing revenues	162	240	499
Income from equity method investments	256	175	145
Net gain (loss) on disposal of assets	58	389	120
Other income	78	53	53
Total revenues and other income	4,765	3,787	4,953
Costs and expenses:
Production	706	712	979
Marketing, including purchases from related parties	168	245	500
Other operating	431	484	410
Exploration	409	323	971
Depreciation, depletion and amortization	2,372	2,156	2,721
Impairments	229	67	721
Taxes other than income	183	151	216
General and administrative	400	481	588
Total costs and expenses	4,898	4,619	7,106
Income from operations	(133)	(832)	(2,153)
Net interest and other	(270)	(332)	(286)
Gain (Loss) on Extinguishment of Debt	(51)	0	0
Income from continuing operations before income taxes	(454)	(1,164)	(2,439)
Provision for income taxes	376	923	(738)
Income from continuing operations	(830)	(2,087)	(1,701)
Discontinued operations	(4,893)	(53)	(503)
Net income (loss)	$ (5,723)	$ (2,140)	$ (2,204)
Basic:
Income from continuing operations (in dollars per basic share)	$ (0.97)	$ (2.55)	$ (2.51)
Discontinued operations (in dollars per basic share)	(5.76)	(0.06)	(0.75)
Net income (in dollars per basic share)	(6.73)	(2.61)	(3.26)
Diluted:
Income from continuing operations (in dollars per diluted share)	(0.97)	(2.55)	(2.51)
Discontinued operations (in dollars per diluted share)	(5.76)	(0.06)	(0.75)
Net income (in dollars per diluted share)	(6.73)	(2.61)	(3.26)
Dividends (in dollars per share)	$ 0.2	$ 0.20	$ 0.68
Weighted average shares:
Basic	850	819	677
Diluted	850	819	677