CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
REVENUES AND OTHER INCOME
Net sales	$ 2,999	$ 2,648	$ 9,016	$ 7,302
Interest, dividends and other income	20	25	72	72
Gain on sale of assets, net	86	60	598	198
TOTAL REVENUES AND OTHER INCOME	3,105	2,733	9,686	7,572
COSTS AND OTHER DEDUCTIONS
Cost of sales	1,357	1,338	4,269	3,863
Selling, general and administrative and other operating expenses	352	316	976	926
Taxes other than on income	76	61	221	210
Depreciation, depletion and amortization	995	1,046	2,926	3,218
Asset impairments and related items	11	221	24	299
Exploration expense	8	9	27	45
Interest and debt expense, net	91	68	258	216
TOTAL COSTS AND OTHER DEDUCTIONS	2,890	3,059	8,701	8,777
Income (loss) before income taxes and other items	215	(326)	985	(1,205)
Benefit (provision) for domestic and foreign income taxes	(85)	30	(448)	329
Income from equity investments	60	58	277	142
Income (loss) from continuing operations	190	(238)	814	(734)
Discontinued operations, net		(3)		432
NET INCOME (LOSS)	$ 190	$ (241)	$ 814	$ (302)
BASIC EARNINGS PER COMMON SHARE
Income (loss) from continuing operations (in dollars per share)	$ 0.25	$ (0.31)	$ 1.06	$ (0.96)
Discontinued operations, net (in dollars per share)		(0.01)		0.56
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	0.25	(0.32)	1.06	(0.40)
DILUTED EARNINGS PER COMMON SHARE
Income (loss) from continuing operations (in dollars per share)	0.25	(0.31)	1.06	(0.96)
Discontinued operations, net (in dollars per share)		(0.01)		0.56
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	0.25	(0.32)	1.06	(0.40)
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.77	$ 0.76	$ 2.29	$ 2.26