Statement of Consolidated Cash Flows (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME	$ 2,058	$ 1,333
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion, and amortization	5,011	5,701
Asset retirement obligation accretion	196	172
Provision for deferred income taxes	225	174
Other	187	62
Changes in operating assets and liabilities:
Receivables	(27)	128
Inventories	(40)	29
Drilling advances	117	(334)
Deferred charges and other	(192)	(200)
Accounts payable	190	168
Accrued expenses	(394)	(814)
Deferred credits and noncurrent liabilities	27	3
NET CASH PROVIDED BY OPERATING ACTIVITIES	7,358	6,422
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(7,498)	(6,387)
Additions to gas gathering, transmission, and processing facilities	(859)	(586)
Proceeds from divestiture of Gulf of Mexico Shelf properties	3,594
Proceeds from Kitimat LNG transaction, net	396
Proceeds from sale of other oil and gas properties	199	26
Acquisition of Cordillera Energy Partners III, LLC		(2,666)
Acquisition of Yara Pilbara Holdings Pty Limited		(439)
Acquisitions, other	(156)	(122)
Other, net	(10)	(386)
NET CASH USED IN INVESTING ACTIVITIES	(4,334)	(10,560)
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper and bank credit facilities, net	(516)	1,827
Fixed rate debt borrowings		2,991
Payments on fixed rate debt	(900)	(400)
Dividends paid	(280)	(246)
Treasury stock activity, net	(249)	2
Other	12	(13)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	(1,933)	4,161
NET INCREASE IN CASH AND CASH EQUIVALENTS	1,091	23
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	160	295
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,251	318
SUPPLEMENTARY CASH FLOW DATA:
Interest paid, net of capitalized interest	185	130
Income taxes paid, net of refunds	$ 1,344	$ 1,876