CONSOLIDATED CONDENSED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
REVENUES AND OTHER INCOME
Net sales	$ 3,763	$ 2,957
Interest, dividends and other income	29	21
Gain on sale of assets, net	33
TOTAL REVENUES AND OTHER INCOME	3,825	2,978
COSTS AND OTHER DEDUCTIONS
Cost of sales	1,363	1,426
Selling, general and administrative and other operating expenses	307	272
Taxes other than on income	108	68
Depreciation, depletion and amortization	921	942
Asset impairments and related items	30	13
Exploration expense	15	11
Interest and debt expense, net	97	81
TOTAL COSTS AND OTHER DEDUCTIONS	2,841	2,813
Income before income taxes and other items	984	165
Provision for domestic and foreign income taxes	(339)	(78)
Income from equity investments	63	30
NET INCOME	$ 708	$ 117
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 0.92	$ 0.15
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	0.92	0.15
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.77	$ 0.76