Consolidated Balance Sheet (Unaudited) (USD $) In Millions	Jun. 30, 2011	Dec. 31, 2010
CURRENT ASSETS:
Cash and cash equivalents	$ 1,107	$ 134
Receivables, net of allowance	2,495	2,134
Inventories	633	564
Drilling advances	250	259
Prepaid assets and other	415	389
Total current assets	4,900	3,480
Oil and gas, on the basis of full-cost accounting:
Proved properties	61,028	57,904
Unproved properties and properties under development, not being amortized	5,252	5,048
Gathering, transmission and processing facilities	4,481	4,212
Other	637	582
Total property and equipment, gross	71,398	67,746
Less: Accumulated depreciation, depletion and amortization	(31,560)	(29,595)
Total property and equipment, net	39,838	38,151
OTHER ASSETS:
Goodwill	1,032	1,032
Deferred charges and other	759	762
Total Assets	46,529	43,425
CURRENT LIABILITIES:
Accounts payable	1,029	779
Accrued operating expense	168	163
Accrued exploration and development	1,375	1,367
Accrued compensation and benefits	135	231
Current debt	448	46
Current asset retirement obligation	360	407
Derivative instruments	229	194
Accrued income taxes	266	2
Other	474	335
Total current liabilities	4,484	3,524
LONG-TERM DEBT	7,404	8,095
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Income taxes	4,698	4,249
Asset retirement obligation	2,535	2,465
Other	741	715
Total deferred credits other noncurrent liabilities	7,974	7,429
COMMITMENTS AND CONTINGENCIES (Note 7)
SHAREHOLDERS' EQUITY:
Preferred stock, no par value, 10,000,000 shares authorized, 6% Cumulative Mandatory Convertible, Series D, $1,000 per share liquidation preference, 1,265,000 shares issued and outstanding	1,227	1,227
Common stock, $0.625 par, 860,000,000 shares authorized, 384,983,055 and 383,668,297 shares issued, respectively	241	240
Paid-in capital	8,969	8,864
Retained earnings	16,463	14,223
Treasury stock, at cost, 1,147,641 and 1,276,555 shares, respectively	(33)	(36)
Accumulated other comprehensive loss	(200)	(141)
Total shareholders' equity	26,667	24,377
Total liabilities and shareholders' equity	$ 46,529	$ 43,425