CONSOLIDATED CONDENSED STATEMENTS OF INCOME (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
REVENUES AND OTHER INCOME
Net sales	$ 6,268	$ 5,726
Interest, dividends and other income	14	31
Gains on disposition of assets, net	1	22
TOTAL REVENUES AND OTHER INCOME	6,283	5,779
COSTS AND OTHER DEDUCTIONS
Cost of sales	2,950	2,526
Selling, general and administrative and other operating expenses	434	441
Taxes other than on income	174	151
Exploration expense	98	84
Interest and debt expense, net	30	215
TOTAL COSTS AND OTHER DEDUCTIONS	3,686	3,417
Income before income taxes and other items	2,597	2,362
Provision for domestic and foreign income taxes	1,139	1,054
Income from equity investments	(102)	(97)
Income from continuing operations	1,560	1,405
Discontinued operations, net	(1)	144
NET INCOME	$ 1,559	$ 1,549
BASIC EARNINGS PER COMMON SHARE
Income from continuing operations (in dollars per share)	$ 1.92	$ 1.72
Discontinued operations, net (in dollars per share)		$ 0.18
BASIC EARNINGS PER COMMON SHARE (in dollars per share)	$ 1.92	$ 1.90
DILUTED EARNINGS PER COMMON SHARE
Income from continuing operations (in dollars per share)	$ 1.92	$ 1.72
Discontinued operations, net (in dollars per share)		$ 0.18
DILUTED EARNINGS PER COMMON SHARE (in dollars per share)	$ 1.92	$ 1.90
DIVIDENDS PER COMMON SHARE (in dollars per share)	$ 0.54	$ 0.46