Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
REVENUES AND OTHER INCOME
Net sales	$ 17,824	$ 12,508	$ 10,090
Interest, dividends and other income	136	99	106
Gains on sale of equity investments and other assets	974	667	202
TOTAL REVENUES AND OTHER INCOME	18,934	13,274	10,398
COSTS AND OTHER DEDUCTIONS
Cost of sales (excludes depreciation, depletion, and amortization of $3,976 in 2018, $4,000 in 2017, and $4,266 in 2016)	6,568	5,594	5,189
Selling, general and administrative and other operating expenses	1,613	1,424	1,330
Taxes other than on income	439	311	277
Depreciation, depletion and amortization	3,977	4,002	4,268
Asset impairments and related items	561	545	825
Exploration expense	110	82	62
Interest and debt expense, net	389	345	292
TOTAL COSTS AND OTHER DEDUCTIONS	13,657	12,303	12,243
INCOME (LOSS) BEFORE INCOME TAXES AND OTHER ITEMS	5,277	971	(1,845)
(Provision for) benefit from domestic and foreign income taxes	(1,477)	(17)	662
Income from equity investments	331	357	181
INCOME (LOSS) FROM CONTINUING OPERATIONS	4,131	1,311	(1,002)
Income from discontinued operations	0	0	428
NET INCOME (LOSS)	$ 4,131	$ 1,311	$ (574)
BASIC EARNINGS (LOSS) PER COMMON SHARE (attributable to common stock)
Income (loss) from continuing operations (in dollars per share)	$ 5.40	$ 1.71	$ (1.31)
Discontinued operations, net (in dollars per share)	0.00	0.00	0.56
BASIC EARNINGS (LOSS) PER COMMON SHARE (in dollars per share)	5.40	1.71	(0.75)
DILUTED EARNINGS (LOSS) PER COMMON SHARE (attributable to common stock)
Income (loss) from continuing operations (in dollars per share)	5.39	1.70	(1.31)
Discontinued operations, net (in dollars per share)	0.00	0.00	0.56
DILUTED EARNINGS (LOSS) PER COMMON SHARE (in dollars per share)	$ 5.39	$ 1.70	$ (0.75)