Supplementary Oil and Gas Disclosure (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2014

Supplementary Oil And Gas Disclosures Tables [Abstract]

Total Cost Incurred in Oil and Gas Property Acquisition, Exploration, and Development Activities

The following tables present costs incurred for oil and gas property acquisitions, exploration and development for the respective years:

	Continuing Operations				Discontinued Operations
	Domestic		China		Malaysia		Total
	(In millions)
2014:
Property acquisitions:
Unproved	$	146	$	—	$	—	$	146
Proved	6		—		—		6
Exploration	1,089		—		—		1,089
Development(1)	772		156		14		942
Total costs incurred(2)	$	2,013	$	156	$	14	$	2,183
2013:
Property acquisitions:
Unproved	$	154	$	—	$	—	$	154
Proved	8		1		—		9
Exploration	966		33		101		1,100
Development(1)	691		140		211		1,042
Total costs incurred(2)	$	1,819	$	174	$	312	$	2,305
2012:
Property acquisitions:
Unproved	$	64	$	—	$	—	$	64
Proved	3		—		—		3
Exploration	929		1		63		993
Development(1)	659		86		108		853
Total costs incurred(2)	$	1,655	$	87	$	171	$	1,913

 _________________

(1) Includes $56 million, $121 million and $9 million for 2014, 2013 and 2012, respectively, of asset retirement costs.

(2) Other items impacting the capitalized costs of our oil and gas properties which are not included in total costs incurred are as follows:

	2014		2013		2012
	(In millions)
Property sales — Domestic	$	635	$	23	$	606
Property sales — International	1,571		—		—
Ceiling test writedown — Domestic	—		—		1,488
	$	2,206	$	23	$	2,094

Estimated Net Quantities of Proved Oil and Gas Reserves

The following table sets forth our total net proved reserves and our total net proved developed and undeveloped reserves as of December 31,2011, 2012, 2013 and 2014 and the changes in our total net proved reserves during the three-year period ended December 31, 2014:

	Crude Oil and Condensate (MMBbls)								Natural Gas (Bcf)
	Continuing Operations				Discontinued Operations				Continuing Operations			Discontinued Operations
	Domestic		China(1)		Malaysia(1)		Total		Domestic		China(1)	Malaysia(1)		Total
Proved developed and undeveloped reserves as of:
December 31, 2011	204		20		23		247		2,329		—	4		2,333
Revisions of previous estimates	(13	)	—		2		(11	)	(525	)	—	(2	)	(527	)
Extensions, discoveries and other additions	38		—		—		38		181		—	—		181
Purchases of properties	—		—		—		—		1		—	—		1
Sales of properties	(15	)	—		—		(15	)	(80	)	—	—		(80	)
Production	(11	)	(1	)	(10	)	(22	)	(151	)	—	(2	)	(153	)
December 31, 2012	203		19		15		237		1,755		—	—		1,755
Revisions of previous estimates	19		7		2		28		(166	)	—	—		(166	)
Extensions, discoveries and other additions	25		—		2		27		187		—	—		187
Purchases of properties	1		—		—		1		1		—	—		1
Sales of properties	—		—		—		—		(5	)	—	—		(5	)
Production	(14	)	(1	)	(8	)	(23	)	(124	)	—	—		(124	)
December 31, 2013	234		25		11		270		1,648		—	—		1,648
Revisions of previous estimates	18		(2	)	—		16		129		—	—		129
Extensions, discoveries and other additions	41		1		—		42		112		—	—		112
Purchases of properties	6		—		—		6		9		—	—		9
Sales of properties	(3	)	—		(10	)	(13	)	(164	)	—	—		(164	)
Production	(18	)	(1	)	(1	)	(20	)	(127	)	—	—		(127	)
December 31, 2014	278		23		—		301		1,607		—	—		1,607
Proved developed reserves as of:
December 31, 2011	88		5		17		110		1,405		—	4		1,409
December 31, 2012	92		4		14		110		1,042		—	—		1,042
December 31, 2013	112		4		11		127		1,055		—	—		1,055
December 31, 2014	135		9		—		144		938		—	—		938
Proved undeveloped reserves as of:
December 31, 2011	116		15		6		137		924		—	—		924
December 31, 2012	111		15		1		127		713		—	—		713
December 31, 2013	122		21		—		143		593		—	—		593
December 31, 2014	143		14		—		157		669		—	—		669

 _________________

(1) All of our reserves in China are associated with production sharing contracts and are calculated using the economic interest method. We used the economic interest method in Malaysia until we sold our Malaysia business in 2014.

Estimated Net Quantities of Proved Oil and Gas Reserves — (Continued)

	NGLs (MMBbls)						Total Oil Equivalents (MMBOE)
	Continuing Operations			Discontinued Operations			Continuing Operations				Discontinued Operations
	Domestic		China(1)	Malaysia(1)	Total		Domestic		China(1)		Malaysia(1)		Total
Proved developed and undeveloped reserves as of:
December 31, 2011	16		—	—	16		608		20		24		652
Revisions of previous estimates	9		—	—	9		(92	)	—		1		(91	)
Extensions, discoveries and other additions	17		—	—	17		86		—		—		86
Purchases of properties	—		—	—	—		—		—		—		—
Sales of properties	(2	)	—	—	(2	)	(30	)	—		—		(30	)
Production	(3	)	—	—	(3	)	(40	)	(1	)	(10	)	(51	)
December 31, 2012	37		—	—	37		532		19		15		566
Revisions of previous estimates	14		—	—	14		5		7		2		14
Extensions, discoveries and other additions	22		—	—	22		78		—		2		80
Purchases of properties	—		—	—	—		2		—		—		2
Sales of properties	—		—	—	—		(1	)	—		—		(1	)
Production	(5	)	—	—	(5	)	(40	)	(1	)	(8	)	(49	)
December 31, 2013	68		—	—	68		576		25		11		612
Revisions of previous estimates	13		—	—	13		53		(2	)	—		51
Extensions, discoveries and other additions	12		—	—	12		71		1		—		72
Purchases of properties	1		—	—	1		9		—		—		9
Sales of properties	(9	)	—	—	(9	)	(39	)	—		(10	)	(49	)
Production	(9	)	—	—	(9	)	(48	)	(1	)	(1	)	(50	)
December 31, 2014	76		—	—	76		622		23		—		645
Proved developed reserves as of:
December 31, 2011	10		—	—	10		332		5		18		355
December 31, 2012	15		—	—	15		280		4		14		298
December 31, 2013	35		—	—	35		322		4		11		337
December 31, 2014	38		—	—	38		329		9		—		338
Proved undeveloped reserves as of:
December 31, 2011	6		—	—	6		276		15		6		297
December 31, 2012	22		—	—	22		252		15		1		268
December 31, 2013	33		—	—	33		254		21		—		275
December 31, 2014	38		—	—	38		293		14		—		307

 _________________

(1) All of our reserves in China are associated with production sharing contracts and are calculated using the economic interest method. We used the economic interest method in Malaysia until we sold our Malaysia business in 2014.

Schedule of Changes in Standardized Measure of Discounted Future Net Cash Flows

Set forth in the table below is a summary of the changes in the standardized measure of discounted future net cash flows for our proved oil and gas reserves during each of the years in the three-year period ended December 31, 2014:

	Continuing Operations						Discontinued Operations
	Domestic			China			Malaysia			Total
	(In millions)
2014:
Beginning of the period	$	4,628		$	902		$	303		$	5,833
Revisions of previous estimates:
Changes in prices and costs	(492		)	(119		)	(132		)	(743		)
Changes in quantities	784			(104		)	—			680
Changes in future development costs	253			(72		)	129			310
Previously estimated development costs incurred during the period	698			147			12			857
Additions to proved reserves resulting from extensions, discoveries and improved recovery, less related costs	860			—			—			860
Purchases and sales of reserves in place, net	(171		)	—			(279		)	(450		)
Accretion of discount	655			114			19			788
Sales of oil and gas, net of production costs	(1,662		)	(21		)	(54		)	(1,737		)
Net change in income taxes	(383		)	51			—			(332		)
Production timing and other	160			(16		)	2			146
Net increase (decrease)	702			(20		)	(303		)	379
End of period	$	5,330		$	882		$	—		$	6,212
2013:
Beginning of the period	$	3,408		$	612		$	416		$	4,436
Revisions of previous estimates:
Changes in prices and costs	944			2			33			979
Changes in quantities	81			302			76			459
Changes in future development costs	(83		)	(50		)	(126		)	(259		)
Previously estimated development costs incurred during the period	549			130			79			758
Additions to proved reserves resulting from extensions, discoveries and improved recovery, less related costs	1,012			—			49			1,061
Purchases and sales of reserves in place, net	13			—			—			13
Accretion of discount	470			82			33			585
Sales of oil and gas, net of production costs	(973		)	(46		)	(330		)	(1,349		)
Net change in income taxes	(815		)	(63		)	59			(819		)
Production timing and other	22			(67		)	14			(31		)
Net increase (decrease)	1,220			290			(113		)	1,397
End of period	$	4,628		$	902		$	303		$	5,833
2012:
Beginning of the period	$	4,724		$	565		$	692		$	5,981
Revisions of previous estimates:
Changes in prices and costs	(1,490		)	(24		)	(14		)	(1,528		)
Changes in quantities	(427		)	—			23			(404		)
Changes in future development costs	294			(2		)	(19		)	273
Previously estimated development costs incurred during the period	434			67			93			594
Additions to proved reserves resulting from extensions, discoveries and improved recovery, less related costs	791			24			—			815
Purchases and sales of reserves in place, net	(758		)	—			—			(758		)
Accretion of discount	542			77			64			683
Sales of oil and gas, net of production costs	(1,129		)	(63		)	(439		)	(1,631		)
Net change in income taxes	650			4			119			773
Production timing and other	(223		)	(36		)	(103		)	(362		)
Net increase (decrease)	(1,316		)	47			(276		)	(1,545		)
End of period	$	3,408		$	612		$	416		$	4,436

Capitalized Costs of Oil and Gas Properties not Included in Cost Incurred

Other items impacting the capitalized costs of our oil and gas properties which are not included in total costs incurred are as follows:

	2014		2013		2012
	(In millions)
Property sales — Domestic	$	635	$	23	$	606
Property sales — International	1,571		—		—
Ceiling test writedown — Domestic	—		—		1,488
	$	2,206	$	23	$	2,094

Summary Schedule of Estimated Quantities of Proved Oil and Gas Reserves

The following is a discussion of our proved reserves and reserve additions and revisions.

	Year Ended December 31,
	2014		2013		2012
	(MMBOE)
Proved Reserves:
Beginning of year	612		566		652
Reserve additions	81		82		86
Reserve revisions	51		14		(91	)
Sales	(49	)	(1	)	(30	)
Production	(50	)	(49	)	(51	)
End of year	645		612		566

Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil and Gas Reserves

The standardized measure of discounted future net cash flows from our estimated proved oil and gas reserves is as follows:

	Continuing Operations						Discontinued Operations
	Domestic			China			Malaysia			Total
	(In millions)
2014:
Future cash inflows	$	31,758		$	2,183		$	—		$	33,941
Less related future:
Production costs	(11,508		)	(784		)	—			(12,292		)
Development and abandonment costs	(4,611		)	(73		)	—			(4,684		)
Future net cash flows before income taxes	15,639			1,326			—			16,965
Future income tax expense	(4,449		)	(221		)	—			(4,670		)
Future net cash flows before 10% discount	11,190			1,105			—			12,295
10% annual discount for estimating timing of cash flows	(5,860		)	(223		)	—			(6,083		)
Standardized measure of discounted future net cash flows	$	5,330		$	882		$	—		$	6,212
2013:
Future cash inflows	$	26,600		$	2,640		$	1,245		$	30,485
Less related future:
Production costs	(8,302		)	(959		)	(771		)	(10,032		)
Development and abandonment costs	(4,166		)	(143		)	(148		)	(4,457		)
Future net cash flows before income taxes	14,132			1,538			326			15,996
Future income tax expense	(4,278		)	(316		)	—			(4,594		)
Future net cash flows before 10% discount	9,854			1,222			326			11,402
10% annual discount for estimating timing of cash flows	(5,226		)	(320		)	(23		)	(5,569		)
Standardized measure of discounted future net cash flows	$	4,628		$	902		$	303		$	5,833
2012:
Future cash inflows	$	21,724		$	2,186		$	1,754		$	25,664
Less related future:
Production costs	(7,042		)	(888		)	(1,135		)	(9,065		)
Development and abandonment costs	(3,949		)	(202		)	(82		)	(4,233		)
Future net cash flows before income taxes	10,733			1,096			537			12,366
Future income tax expense	(2,786		)	(239		)	(66		)	(3,091		)
Future net cash flows before 10% discount	7,947			857			471			9,275
10% annual discount for estimating timing of cash flows	(4,539		)	(245		)	(55		)	(4,839		)
Standardized measure of discounted future net cash flows	$	3,408		$	612		$	416		$	4,436

Capitalized Costs Relating to Oil and Gas Producing Activities

Capitalized costs for our oil and gas producing activities consisted of the following at the end of each of the years in the two-year period ended December 31, 2014:

	Continuing Operations						Discontinued Operations
	Domestic			China			Malaysia			Total
	(In millions)
December 31, 2014:
Proved properties	$	14,998		$	709		$	—		$	15,707
Unproved properties	677			—			—			677
	15,675			709			—			16,384
Accumulated depreciation, depletion and amortization	(8,022		)	(130		)	—			(8,152		)
Net capitalized costs	$	7,653		$	579		$	—		$	8,232
December 31, 2013:
Proved properties	$	13,185		$	550		$	1,441		$	15,176
Unproved properties	1,116			—			115			1,231
	14,301			550			1,556			16,407
Accumulated depreciation, depletion and amortization	(7,185		)	(112		)	(1,009		)	(8,306		)
Net capitalized costs	$	7,116		$	438		$	547		$	8,101

Results of Operations for Oil and Gas Producing Activities

The following tables present the results of our oil and gas producing activities for the years ending December 31:

	Continuing Operations					Discontinued Operations
	Domestic			China		Malaysia		Total
	(In millions)
2014:
Revenues	$	2,240		$	39	$	90	$	2,369
Production costs	299			12		11		322
Production taxes and other operating expenses	279			6		25		310
Depreciation, depletion and amortization	857			13		33		903
Income taxes	282			2		8		292
Results of operations for oil and gas producing activities	$	523		$	6	$	13	$	542
2013:
Revenues	$	1,777		$	69	$	822	$	2,668
Production costs	265			8		117		390
Production taxes and other operating expenses	204			12		272		488
Depreciation, depletion and amortization	668			18		244		930
Income taxes	224			8		72		304
Results of operations for oil and gas producing activities	$	416		$	23	$	117	$	556
2012:
Revenues	$	1,469		$	86	$	1,005	$	2,560
Production costs	292			7		101		400
Production taxes and other operating expenses	174			18		259		451
Depreciation, depletion and amortization	683			21		251		955
Impairment of oil and gas properties	1,488			—		—		1,488
Income taxes	(410		)	10		150		(250		)
Results of operations for oil and gas producing activities	$	(758	)	$	30	$	244	$	(484	)