CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
REVENUES AND OTHER INCOME
Net sales	$ 2,531	$ 3,469	$ 4,654	$ 6,558
Interest, dividends and other income	27	26	47	57
Gain (loss) on sale of assets, net		19	138	(5)
TOTAL REVENUES AND OTHER INCOME	2,558	3,514	4,839	6,610
COSTS AND OTHER DEDUCTIONS
Cost of sales	1,244	1,480	2,525	3,037
Selling, general and administrative and other operating expenses	338	347	610	658
Taxes other than on income	74	107	149	214
Depreciation, depletion and amortization	1,070	1,116	2,172	2,145
Asset impairments and related items			78	324
Exploration expense	27	10	36	18
Interest and debt expense, net	88	8	148	38
TOTAL COSTS AND OTHER DEDUCTIONS	2,841	3,068	5,718	6,434
Income (loss) before income taxes and other items	(283)	446	(879)	176
Benefit (provision) for domestic and foreign income taxes	96	(324)	299	(305)
Income from equity investments	51	58	84	94
Income (loss) from continuing operations	(136)	180	(496)	(35)
Discontinued operations, net	(3)	(4)	435	(7)
NET INCOME (LOSS)	$ (139)	$ 176	$ (61)	$ (42)
BASIC EARNINGS PER COMMON SHARE
Income (loss) from continuing operations (in dollars per share)	$ (0.18)	$ 0.23	$ (0.65)	$ (0.04)
Discontinued operations, net (in dollars per share)			0.57	(0.01)
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	(0.18)	0.23	(0.08)	(0.05)
DILUTED EARNINGS PER COMMON SHARE
Income (loss) from continuing operations (in dollars per share)	(0.18)	0.23	(0.65)	(0.04)
Discontinued operations, net (in dollars per share)			0.57	(0.01)
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	(0.18)	0.23	(0.08)	(0.05)
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.75	$ 0.75	$ 1.50	$ 1.47