Supplemental Information On Oil And Gas Operations (Tables)

12 Months Ended

Dec. 31, 2013

Supplemental Information On Oil And Gas Operations [Abstract]

Costs Incurred

	Year Ended December 31, 2013
	U.S.		Canada		Total
	(In millions)
Property acquisition costs:
Proved properties	$	19	$	3	$	22
Unproved properties		213		3		216
Exploration costs		443		152		595
Development costs		3,838		1,251		5,089
Costs incurred	$	4,513	$	1,409	$	5,922
	Year Ended December 31, 2012
	U.S.		Canada		Total
	(In millions)
Property acquisition costs:
Proved properties	$	2	$	71	$	73
Unproved properties		1,135		32		1,167
Exploration costs		351		315		666
Development costs		4,408		1,691		6,099
Costs incurred	$	5,896	$	2,109	$	8,005
	Year Ended December 31, 2011
	U.S.		Canada		Total
	(In millions)
Property acquisition costs:
Proved properties	$	34	$	14	$	48
Unproved properties		851		72		923
Exploration costs		272		282		554
Development costs		4,130		1,288		5,418
Costs incurred	$	5,287	$	1,656	$	6,943

Capitalized Costs

	December 31, 2013
	U.S.		Canada		Total
	(In millions)
Proved properties	$	51,366	$	22,629	$	73,995
Unproved properties		1,277		1,514		2,791
Total oil & gas properties		52,643		24,143		76,786
Accumulated DD&A		(35,848)		(16,613)		(52,461)
Net capitalized costs	$	16,795	$	7,530	$	24,325
	December 31, 2012
	U.S.		Canada		Total
	(In millions)
Proved properties	$	46,570	$	22,840	$	69,410
Unproved properties		1,703		1,605		3,308
Total oil & gas properties		48,273		24,445		72,718
Accumulated DD&A		(33,098)		(16,039)		(49,137)
Net capitalized costs	$	15,175	$	8,406	$	23,581

Oil And Gas Properties Not Subject To Amortization

	Costs Incurred In
	2013		2012		2011		Prior to 2011		Total
	(In millions)
Acquisition costs	$	207	$	725	$	62	$	848	$	1,842
Exploration costs		226		129		118		30		503
Development costs		113		132		66		9		320
Capitalized interest		41		33		33		19		126
Total oil and gas properties not subject to amortization	$	587	$	1,019	$	279	$	906	$	2,791

Results Of Operations

	Year Ended December 31, 2013
	U.S.		Canada		Total
	(In millions)
Oil, gas and NGL sales	$	5,964	$	2,558	$	8,522
Lease operating expenses		(1,257)		(1,011)		(2,268)
General and administrative expenses		(125)		(77)		(202)
Production and property taxes		(380)		(59)		(439)
Depreciation, depletion and amortization		(1,640)		(825)		(2,465)
Asset impairments		(1,110)		(843)		(1,953)
Accretion of asset retirement obligations		(47)		(64)		(111)
Income tax benefit (expense)		(510)		88		(422)
Results of operations	$	895	$	(233)	$	662
Depreciation, depletion and amortization per Boe	$	8.69	$	12.87	$	9.75
	Year Ended December 31, 2012
	U.S.		Canada		Total
	(In millions)
Oil, gas and NGL sales	$	4,679	$	2,474	$	7,153
Lease operating expenses		(1,059)		(1,015)		(2,074)
General and administrative expenses		(159)		(137)		(296)
Production and property taxes		(340)		(55)		(395)
Depreciation, depletion and amortization		(1,563)		(963)		(2,526)
Asset impairments		(1,793)		(163)		(1,956)
Accretion of asset retirement obligations		(40)		(69)		(109)
Income tax benefit (expense)		99		(3)		96
Results of operations	$	(176)	$	69	$	(107)
Depreciation, depletion and amortization per Boe	$	8.55	$	14.41	$	10.12
	Year Ended December 31, 2011
	U.S.		Canada		Total
	(In millions)
Oil, gas and NGL sales	$	5,418	$	2,897	$	8,315
Lease operating expenses		(925)		(926)		(1,851)
General and administrative expenses		(132)		(119)		(251)
Production and property taxes		(357)		(45)		(402)
Depreciation, depletion and amortization		(1,201)		(786)		(1,987)
Accretion of asset retirement obligations		(34)		(57)		(91)
Income tax expense		(1,005)		(250)		(1,255)
Results of operations	$	1,764	$	714	$	2,478
Depreciation, depletion and amortization per Boe	$	6.94	$	11.74	$	8.28

Proved Reserves

	Oil (MMBbls)
	U.S.		Canada		Total
Proved developed and undeveloped reserves:
December 31, 2010		148		93		241
Revisions due to prices		2		1		3
Revisions other than price		(1)		(5)		(6)
Extensions and discoveries		36		6		42
Production		(17)		(15)		(32)
December 31, 2011		168		80		248
Revisions due to prices		(1)		(5)		(6)
Revisions other than price		(6)		(2)		(8)
Extensions and discoveries		65		7		72
Production		(21)		(15)		(36)
December 31, 2012		205		65		270
Revisions due to prices		1		(1)		-
Revisions other than price		(18)		-		(18)
Extensions and discoveries		69		7		76
Purchase of reserves		1		-		1
Production		(28)		(15)		(43)
Sale of reserves		(1)		-		(1)
December 31, 2013		229		56		285
Proved developed reserves as of:
December 31, 2010		131		82		213
December 31, 2011		146		73		219
December 31, 2012		166		62		228
December 31, 2013		194		56		250
Proved developed-producing reserves as of:
December 31, 2010		123		72		195
December 31, 2011		139		65		204
December 31, 2012		155		56		211
December 31, 2013		178		51		229
Proved undeveloped reserves as of:
December 31, 2010		17		11		28
December 31, 2011		22		7		29
December 31, 2012		39		3		42
December 31, 2013		35		-		35

	Bitumen (MMBbls)
	U.S.		Canada		Total
Proved developed and undeveloped reserves:
December 31, 2010		-		440		440
Revisions due to prices		-		(16)		(16)
Revisions other than price		-		16		16
Extensions and discoveries		-		30		30
Production		-		(13)		(13)
December 31, 2011		-		457		457
Revisions due to prices		-		14		14
Revisions other than price		-		7		7
Extensions and discoveries		-		67		67
Production		-		(17)		(17)
December 31, 2012		-		528		528
Revisions due to prices		-		(11)		(11)
Revisions other than price		-		16		16
Extensions and discoveries		-		38		38
Production		-		(19)		(19)
December 31, 2013		-		552		552
Proved developed reserves as of:
December 31, 2010		-		44		44
December 31, 2011		-		90		90
December 31, 2012		-		99		99
December 31, 2013		-		111		111
Proved developed-producing reserves as of:
December 31, 2010		-		44		44
December 31, 2011		-		90		90
December 31, 2012		-		99		99
December 31, 2013		-		111		111
Proved undeveloped reserves as of:
December 31, 2010		-		396		396
December 31, 2011		-		367		367
December 31, 2012		-		429		429
December 31, 2013		-		441		441

	Gas (Bcf)
	U.S.		Canada		Total
Proved developed and undeveloped reserves:
December 31, 2010		9,065		1,218		10,283
Revisions due to prices		(1)		(60)		(61)
Revisions other than price		(243)		(38)		(281)
Extensions and discoveries		1,410		58		1,468
Purchase of reserves		16		20		36
Production		(740)		(213)		(953)
Sale of reserves		-		(6)		(6)
December 31, 2011		9,507		979		10,486
Revisions due to prices		(831)		(99)		(930)
Revisions other than price		(287)		(33)		(320)
Extensions and discoveries		1,124		34		1,158
Purchase of reserves		2		-		2
Production		(752)		(186)		(938)
Sale of reserves		(1)		(11)		(12)
December 31, 2012		8,762		684		9,446
Revisions due to prices		405		161		566
Revisions other than price		(299)		67		(232)
Extensions and discoveries		471		19		490
Purchase of reserves		1		-		1
Production		(709)		(165)		(874)
Sale of reserves		(81)		(8)		(89)
December 31, 2013		8,550		758		9,308
Proved developed reserves as of:
December 31, 2010		7,280		1,144		8,424
December 31, 2011		7,957		951		8,908
December 31, 2012		7,391		679		8,070
December 31, 2013		7,707		752		8,459
Proved developed-producing reserves as of:
December 31, 2010		6,702		1,031		7,733
December 31, 2011		7,409		862		8,271
December 31, 2012		7,091		624		7,715
December 31, 2013		7,425		680		8,105
Proved undeveloped reserves as of:
December 31, 2010		1,785		74		1,859
December 31, 2011		1,550		28		1,578
December 31, 2012		1,371		5		1,376
December 31, 2013		843		6		849

	Natural Gas Liquids (MMBbls)
	U.S.		Canada		Total
Proved developed and undeveloped reserves:
December 31, 2010		449		30		479
Revisions due to prices		4		(1)		3
Revisions other than price		1		-		1
Extensions and discoveries		102		2		104
Purchase of reserves		2		-		2
Production		(33)		(4)		(37)
December 31, 2011		525		27		552
Revisions due to prices		(19)		(5)		(24)
Revisions other than price		(13)		-		(13)
Extensions and discoveries		114		2		116
Production		(36)		(4)		(40)
December 31, 2012		571		20		591
Revisions due to prices		8		3		11
Revisions other than price		(50)		3		(47)
Extensions and discoveries		64		1		65
Production		(41)		(4)		(45)
December 31, 2013		552		23		575
Proved developed reserves as of:
December 31, 2010		353		28		381
December 31, 2011		402		26		428
December 31, 2012		431		20		451
December 31, 2013		468		23		491
Proved developed-producing reserves as of:
December 31, 2010		318		26		344
December 31, 2011		372		24		396
December 31, 2012		406		19		425
December 31, 2013		442		21		463
Proved undeveloped reserves as of:
December 31, 2010		96		2		98
December 31, 2011		123		1		124
December 31, 2012		140		-		140
December 31, 2013		84		-		84

	Total (MMBoe) (1)
	U.S.		Canada		Total
Proved developed and undeveloped reserves:
December 31, 2010		2,107		766		2,873
Revisions due to prices		6		(27)		(21)
Revisions other than price		(41)		6		(35)
Extensions and discoveries		374		47		421
Purchase of reserves		5		3		8
Production		(173)		(67)		(240)
Sale of reserves		-		(1)		(1)
December 31, 2011		2,278		727		3,005
Revisions due to prices		(159)		(12)		(171)
Revisions other than price		(67)		(1)		(68)
Extensions and discoveries		367		82		449
Production		(183)		(67)		(250)
Sale of reserves		-		(2)		(2)
December 31, 2012		2,236		727		2,963
Revisions due to prices		76		18		94
Revisions other than price		(117)		29		(88)
Extensions and discoveries		212		49		261
Purchase of reserves		1		-		1
Production		(189)		(64)		(253)
Sale of reserves		(14)		(1)		(15)
December 31, 2013		2,205		758		2,963
Proved developed reserves as of:
December 31, 2010		1,696		346		2,042
December 31, 2011		1,875		348		2,223
December 31, 2012		1,829		294		2,123
December 31, 2013		1,947		315		2,262
Proved developed-producing reserves as of:
December 31, 2010		1,557		314		1,871
December 31, 2011		1,746		323		2,069
December 31, 2012		1,743		278		2,021
December 31, 2013		1,857		297		2,154
Proved undeveloped reserves as of:
December 31, 2010		411		420		831
December 31, 2011		403		379		782
December 31, 2012		407		433		840
December 31, 2013		258		443		701

_______________________

(1)Gas reserves are converted to Boe at the rate of six Mcf per Bbl of oil, based upon the approximate relative energy content of gas and oil. This rate is not necessarily indicative of the relationship of natural gas and oil prices. Bitumen and natural gas liquids reserves are converted to Boe on a one-to-one basis with oil.

Proved Undeveloped Reserves

	U.S.		Canada		Total
Proved undeveloped reserves as of December 31, 2012		407		433		840
Extensions and discoveries		57		38		95
Revisions due to prices		1		(10)		(9)
Revisions other than price		(91)		13		(78)
Conversion to proved developed reserves		(116)		(31)		(147)
Proved undeveloped reserves as of December 31, 2013		258		443		701

Standardized Measure of Discounted Future Cash Flows Relating to Proved Reserves

	Year Ended December 31, 2013
	U.S.		Canada		Total
	(In millions)
Future cash inflows	$	61,983	$	33,305	$	95,288
Future costs:
Development		(5,448)		(5,308)		(10,756)
Production		(26,663)		(15,709)		(42,372)
Future income tax expense		(9,046)		(2,327)		(11,373)
Future net cash flow		20,826		9,961		30,787
10% discount to reflect timing of cash flows		(10,346)		(4,700)		(15,046)
Standardized measure of discounted future net cash flows	$	10,480	$	5,261	$	15,741
	Year Ended December 31, 2012
	U.S.		Canada		Total
	(In millions)
Future cash inflows	$	55,297	$	33,570	$	88,867
Future costs:
Development		(6,556)		(6,211)		(12,767)
Production		(24,265)		(16,611)		(40,876)
Future income tax expense		(6,542)		(1,992)		(8,534)
Future net cash flow		17,934		8,756		26,690
10% discount to reflect timing of cash flows		(9,036)		(4,433)		(13,469)
Standardized measure of discounted future net cash flows	$	8,898	$	4,323	$	13,221
	Year Ended December 31, 2011
	U.S.		Canada		Total
	(In millions)
Future cash inflows	$	69,305	$	36,786	$	106,091
Future costs:
Development		(6,817)		(4,678)		(11,495)
Production		(26,217)		(15,063)		(41,280)
Future income tax expense		(11,432)		(3,763)		(15,195)
Future net cash flow		24,839		13,282		38,121
10% discount to reflect timing of cash flows		(13,492)		(6,785)		(20,277)
Standardized measure of discounted future net cash flows	$	11,347	$	6,497	$	17,844

Schedule Of Principal Changes In The Standardized Measure Of Discounted Future Net Cash Flows Attributable To Proved Reserves

	Year Ended December 31,
	2013		2012		2011
	(In millions)
Beginning balance	$	13,221	$	17,844	$	16,352
Net changes in prices and production costs		3,018		(9,889)		1,875
Oil, bitumen, gas and NGL sales, net of production costs		(5,613)		(4,388)		(5,811)
Changes in estimated future development costs		399		(1,094)		(440)
Extensions and discoveries, net of future development costs		4,047		4,669		3,714
Purchase of reserves		14		18		57
Sales of reserves in place		(44)		(25)		(2)
Revisions of quantity estimates		(1,040)		162		(228)
Previously estimated development costs incurred during the period		1,986		1,321		1,302
Accretion of discount		1,940		1,420		2,248
Other, primarily changes in timing and foreign exchange rates		(583)		113		(294)
Net change in income taxes		(1,604)		3,070		(929)
Ending balance	$	15,741	$	13,221	$	17,844