CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
REVENUES AND OTHER INCOME
Net sales	$ 2,957	$ 2,123
Interest, dividends and other income	21	20
Gain on disposal of assets, net		138
TOTAL REVENUES AND OTHER INCOME	2,978	2,281
COSTS AND OTHER DEDUCTIONS
Cost of sales	1,426	1,281
Selling, general and administrative and other operating expenses	272	272
Taxes other than on income	68	75
Depreciation, depletion and amortization	942	1,102
Asset impairments and related items	13	78
Exploration expense	11	9
Interest and debt expense, net	81	60
TOTAL COSTS AND OTHER DEDUCTIONS	2,813	2,877
Income (loss) before income taxes and other items	165	(596)
(Provision) benefit for domestic and foreign income taxes	(78)	203
Income from equity investments	30	33
Income (loss) from continuing operations	117	(360)
Discontinued operations, net		438
NET INCOME	$ 117	$ 78
BASIC EARNINGS PER COMMON SHARE
Income (loss) from continuing operations (in dollars per share)	$ 0.15	$ (0.47)
Discontinued operations, net (in dollars per share)		0.57
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	0.15	0.10
DILUTED EARNINGS PER COMMON SHARE
Income (loss) from continuing operations (in dollars per share)	0.15	(0.47)
Discontinued operations, net (in dollars per share)		0.57
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	0.15	0.10
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.76	$ 0.75