CONSOLIDATED CONDENSED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
REVENUES AND OTHER INCOME
Net sales	$ 5,872	$ 6,268
Interest, dividends and other income	35	15
TOTAL REVENUES AND OTHER INCOME	5,907	6,283
COSTS AND OTHER DEDUCTIONS
Cost of sales	3,137	2,950
Selling, general and administrative and other operating expenses	393	434
Taxes other than on income	186	174
Exploration expense	50	98
Interest and debt expense, net	34	30
TOTAL COSTS AND OTHER DEDUCTIONS	3,800	3,686
Income before income taxes and other items	2,107	2,597
Provision for domestic and foreign income taxes	(844)	(1,139)
Income from equity investments	96	102
Income from continuing operations	1,359	1,560
Discontinued operations, net	(4)	(1)
NET INCOME	$ 1,355	$ 1,559
BASIC EARNINGS PER COMMON SHARE
Income from continuing operations (in dollars per share)	$ 1.69	$ 1.92
Discontinued operations, net (in dollars per share)	$ (0.01)
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 1.68	$ 1.92
DILUTED EARNINGS PER COMMON SHARE
Income from continuing operations (in dollars per share)	$ 1.69	$ 1.92
Discontinued operations, net (in dollars per share)	$ (0.01)
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 1.68	$ 1.92
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.64	$ 0.54