CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
REVENUES AND OTHER INCOME
Net sales	$ 4,083	$ 3,060	$ 7,846	$ 6,017
Interest, dividends and other income	38	31	67	52
Gain on sale of assets, net	10	512	43	512
TOTAL REVENUES AND OTHER INCOME	4,131	3,603	7,956	6,581
COSTS AND OTHER DEDUCTIONS
Cost of sales	1,465	1,486	2,828	2,912
Selling, general and administrative and other operating expenses	402	352	709	624
Taxes other than on income	115	77	223	145
Depreciation, depletion and amortization	947	989	1,868	1,931
Asset impairments and related items	12		42	13
Exploration expense	21	8	36	19
Interest and debt expense, net	97	86	194	167
TOTAL COSTS AND OTHER DEDUCTIONS	3,059	2,998	5,900	5,811
Income before income taxes and other items	1,072	605	2,056	770
Provision for domestic and foreign income taxes	(302)	(285)	(641)	(363)
Income from equity investments	78	187	141	217
NET INCOME	$ 848	$ 507	$ 1,556	$ 624
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 1.10	$ 0.66	$ 2.02	$ 0.81
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	1.10	0.66	2.02	0.81
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.77	$ 0.76	$ 1.54	$ 1.52