Statement of Consolidated Cash Flows - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016		Dec. 31, 2015		Dec. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET LOSS INCLUDING NONCONTROLLING INTEREST		$ (1,273)		$ (10,667)	[1],[2],[3],[4]	$ (8,019)	[1],[2],[3],[4]
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss (income) from discontinued operations		33		(492)	[2],[3]	1,707	[2],[3]
Loss (gain) on divestitures		(21)		(281)	[2],[3]	1,608	[2],[3]
Exploratory dry hole expense and unproved leasehold impairments		353		2,595	[3]	2,294	[3]
Depreciation, depletion, and amortization		2,618		3,300	[3]	4,526	[3]
Asset retirement obligation accretion		156		145	[2],[3]	154	[2],[3]
Impairments		1,103		9,472	[2],[3]	7,102	[2],[3]
Benefit from deferred income taxes		(833)		(1,445)	[2],[3]	(1,799)	[2],[3]
Other		164		7	[3]	(231)	[3]
Changes in operating assets and liabilities:
Receivables		126		663	[3]	757	[3]
Inventories		(27)		21	[3]	(31)	[3]
Drilling advances		91		138	[3]	107	[3]
Deferred charges and other		115		(345)	[3]	(301)	[3]
Accounts payable		(63)		(489)	[3]	(216)	[3]
Accrued expenses		(9)		(156)	[3]	(572)	[3]
Deferred credits and noncurrent liabilities		(80)		88	[3]	(73)	[3]
NET CASH PROVIDED BY CONTINUING OPERATING ACTIVITIES		2,453		2,554	[3]	7,013	[3]
NET CASH PROVIDED BY (USED IN) DISCONTINUED OPERATIONS		(23)		113	[3]	944	[3]
NET CASH PROVIDED BY OPERATING ACTIVITIES		2,430		2,667	[3]	7,957	[3]
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property		(1,610)		(4,208)	[3]	(8,608)	[3]
Additions to gas gathering, transmission, and processing facilities		(158)		(233)	[3]	(881)	[3]
Leasehold and property acquisitions		(181)		(367)	[3]	(1,475)	[3]
Proceeds from sale of Kitimat LNG		0		854	[3]	0	[3]
Proceeds from sale of Yara Pilbara		0		391	[3]	0	[3]
Proceeds from sale of oil and gas properties, other		134		268	[3]	470	[3]
Other, net		155		6	[3]	(299)	[3]
NET CASH USED IN CONTINUING INVESTING ACTIVITIES		(1,660)		(3,289)	[3]	(8,171)	[3]
NET CASH PROVIDED BY (USED IN) DISCONTINUED OPERATIONS		0		4,372	[3]	(219)	[3]
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES		(1,660)		1,083	[3]	(8,390)	[3]
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper, credit facilities and bank notes, net		0		(1,570)	[3]	1,568	[3]
Payments on fixed rate debt		(181)		(939)	[3]	0	[3]
Distributions to noncontrolling interest		(293)		(129)	[3]	(140)	[3]
Dividends paid		(379)		(377)	[3]	(365)	[3]
Treasury stock activity, net		0		0	[3]	(1,864)	[3]
Other		(7)		53	[3]	49	[3]
NET CASH USED IN CONTINUING FINANCING ACTIVITIES		(860)		(2,962)	[3]	(752)	[3]
NET CASH USED IN DISCONTINUED OPERATIONS		0		0	[3]	(42)	[3]
NET CASH USED IN FINANCING ACTIVITIES		(860)		(2,962)	[3]	(794)	[3]
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS		(90)		788	[3]	(1,227)	[3]
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	[3]	1,467	[5]	679		1,906
CASH AND CASH EQUIVALENTS AT END OF PERIOD		1,377		1,467	[3],[5]	679	[3]
SUPPLEMENTARY CASH FLOW DATA:
Interest paid, net of capitalized interest		413		461	[3]	260	[3]
Income taxes paid, net of refunds		305		573	[3]	1,357	[3]
Deepwater Gulf of Mexico [Member]
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sale of productive assets		0		0	[3]	1,360	[3]
Anadarko Basin and Southern Louisiana [Member]
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from sale of productive assets		$ 0		$ 0	[3]	$ 1,262	[3]

[1] Financial information for 2015 and 2014 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.

[2] Financial information for 2015 and 2014 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.

[3] Financial information for 2015 and 2014 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.

[4] Financial information for 2015, 2014, and 2013 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.

[5] Financial information for 2015 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.