Consolidated Balance Sheets (USD $) In Millions, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
CURRENT ASSETS
Cash and cash equivalents	$ 3,781	$ 2,578
Trade receivables, net of reserves of $16 in 2011 and $19 in 2010	5,395	5,032
Marketing and trading assets and other	916	900
Assets of discontinued operations		2,861
Inventories	1,069	1,041
Prepaid expenses and other	381	647
Total current assets	11,542	13,059
INVESTMENTS IN UNCONSOLIDATED ENTITIES	2,072	2,039
PROPERTY, PLANT AND EQUIPMENT
Oil and gas segment	56,682	46,232
Chemical segment	5,715	5,508
Midstream, marketing and other segment	5,664	4,094
Corporate	1,310	1,123
GROSS PROPERTY, PLANT AND EQUIPMENT	69,371	56,957
Accumulated depreciation, depletion and amortization	(23,687)	(20,421)
TOTAL PROPERTY, PLANT AND EQUIPMENT	45,684	36,536
LONG-TERM RECEIVABLES AND OTHER ASSETS, NET	746	798
TOTAL ASSETS	60,044	52,432
CURRENT LIABILITIES
Accounts payable	5,304	4,646
Accrued liabilities	2,440	2,397
Domestic and foreign income taxes	110	170
Liabilities of discontinued operations	93	612
Total current liabilities	7,947	7,825
LONG-TERM DEBT, NET	5,871	5,111
DEFERRED CREDITS AND OTHER LIABILITIES
Deferred and other domestic and foreign income taxes	4,846	3,445
Long-term liabilities of discontinued operations	98	115
Other	3,662	3,452
TOTAL DEFERRED CREDITS AND OTHER LIABILITIES	8,606	7,012
CONTINGENT LIABILITIES AND COMMITMENTS
STOCKHOLDERS' EQUITY
Common stock, $0.20 par value, authorized 1.1 billion shares, outstanding shares: 2011 - 886,808,654 and 2010 - 885,275,302	177	177
Treasury stock: 2011 - 75,799,573 shares and 2010 - 72,480,538 shares	(4,502)	(4,228)
Additional paid-in capital	7,286	7,191
Retained earnings	35,142	29,868
Accumulated other comprehensive loss	(483)	(524)
Total Equity	37,620	32,484
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	$ 60,044	$ 52,432