Area of land sold.

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- Definition

Corporation's proportionate interest in oil and gas assets.

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- Definition

Net gain on sale attributable to noncontrolling interest.

+ References

No definition available.

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Net gain on sale attributable to parent.

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No definition available.

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- Definition

Other nonoperating expense after tax.

+ References

No definition available.

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- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)

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- Definition

The aggregate amount of other expense amounts, the components of which are not separately disclosed on the income statement, resulting from ancillary business-related activities (that is, excluding major activities considered part of the normal operations of the business) also known as other nonoperating expense recognized during the period. Such amounts may include: (a) unusual costs, (b) loss on foreign exchange transactions, (c) losses on securities (net of profits), and (d) miscellaneous other expense items.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 9

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.9)

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- Definition

The cash inflow associated with the amount received from the sale of a portion of the company's business, for example a segment, division, branch or other business, during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (b)

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- Definition

The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133

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-SubTopic 10

-Section 45

-Paragraph 12

-Subparagraph (c)

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- Definition

The difference between the value of the consideration received by the Entity on the sale or disposal and the consideration received by the Entity, including any tax related impact.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 50

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2941-110230

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-Name Accounting Standards Codification

-Topic 205

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6360339&loc=d3e1361-107760

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The difference between the value of the consideration received by the Entity on the sale or disposal and net book value of assets sold or disposed, before any tax related impact.

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Dispositions - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended			6 Months Ended	1 Months Ended								3 Months Ended
Dispositions - Additional Information (Detail) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Sep. 30, 2014	Jan. 31, 2014	Apr. 30, 2014	Jun. 30, 2014 acre	Jun. 30, 2014	Jan. 31, 2013	Mar. 31, 2013	Apr. 30, 2013	Dec. 31, 2013	Jan. 31, 2012	Sep. 30, 2012	Oct. 31, 2012	Mar. 31, 2014
Dispositions [Abstract]
Cash proceeds from asset sales	$ 2,978,000,000	$ 4,458,000,000	$ 843,000,000
Goodwill included in the divested businesses' net book value	126,000,000	339,000,000
United Kingdom North Sea Cambo Asset [Member]
Dispositions [Abstract]
Cash proceeds from asset sales				53,000,000
Gain (loss) on asset sale, pre-tax				33,000,000
Gain (loss) on asset sale, after-tax				33,000,000
Bayonne Energy Center LLC [Member]
Dispositions [Abstract]
Cash proceeds from asset sales				79,000,000
Pangkah Asset [Member]
Dispositions [Abstract]
Cash proceeds from asset sales					650,000,000
Gain (loss) on asset sale, pre-tax					31,000,000
Gain (loss) on asset sale, after-tax					(10,000,000)
Goodwill included in the divested businesses' net book value					56,000,000
Thailand [Member]
Dispositions [Abstract]
Cash proceeds from asset sales						805,000,000
Gain (loss) on asset sale, pre-tax						706,000,000
Gain (loss) on asset sale, after-tax						706,000,000
Goodwill included in the divested businesses' net book value						76,000,000
Utica Shale [Member]
Dispositions [Abstract]
Cash proceeds from asset sales							1,075,000,000
Gain (loss) on asset sale, pre-tax							62,000,000	62,000,000
Gain (loss) on asset sale, after-tax							35,000,000	35,000,000
Area of land sold							77,000
Goodwill included in the divested businesses' net book value							11,000,000
Electric Generating Facility [Member]
Dispositions [Abstract]
Cash proceeds from asset sales								320,000,000
Gain (loss) on asset sale, pre-tax							13,000,000	13,000,000
Gain (loss) on asset sale, after-tax							8,000,000	8,000,000
Beryl Fields And Scottish Area Gas Evacuation System Sage
Dispositions [Abstract]
Cash proceeds from asset sales									442,000,000
Gain (loss) on asset sale, pre-tax									328,000,000
Gain (loss) on asset sale, after-tax									323,000,000
Goodwill included in the divested businesses' net book value									48,000,000
Azeri-Chirag-Guneshli (ACG) Fields [Member]
Dispositions [Abstract]
Corporation's proportionate interest in oil and gas assets (in percentage)										3.00%
Baku-Tbilisi-Ceyhan (BTC) Pipeline [Member]
Dispositions [Abstract]
Corporation's proportionate interest in oil and gas assets (in percentage)										2.00%
Samara-Nafta [Member]
Dispositions [Abstract]
Cash proceeds from asset sales											1,900,000,000
Gain (loss) on asset sale, pre-tax											1,119,000,000
Gain (loss) on asset sale, after-tax											1,119,000,000
Goodwill included in the divested businesses' net book value											148,000,000
Corporation's proportionate interest in oil and gas assets (in percentage)											90.00%
Cash proceeds from sale of subsidiary											2,100,000,000
Net gain on sale attributable to noncontrolling interest holder's share											168,000,000
Net gain on sale attributable to parent											951,000,000
Baku Tbilisi Ceyhan Pipeline And Azeri Chirag Guneshli Fields
Dispositions [Abstract]
Cash proceeds from asset sales										884,000,000
Gain (loss) on asset sale, pre-tax										360,000,000
Gain (loss) on asset sale, after-tax										360,000,000
Goodwill included in the divested businesses' net book value										52,000,000
Natuna A [Member]
Dispositions [Abstract]
Cash proceeds from asset sales												656,000,000
Gain (loss) on asset sale, pre-tax		388,000,000										388,000,000
Gain (loss) on asset sale, after-tax		343,000,000										343,000,000
Goodwill included in the divested businesses' net book value												39,000,000
Snohvit [Member]
Dispositions [Abstract]
Cash proceeds from asset sales													132,000,000
Gain (loss) on asset sale, pre-tax													36,000,000
Gain (loss) on asset sale, after-tax													36,000,000
Goodwill included in the divested businesses' net book value													14,000,000
Corporation's proportionate interest in oil and gas assets (in percentage)													3.00%
Schiehallion Field [Member]
Dispositions [Abstract]
Cash proceeds from asset sales														524,000,000
Gain (loss) on asset sale, pre-tax														376,000,000
Gain (loss) on asset sale, after-tax														349,000,000
Goodwill included in the divested businesses' net book value														27,000,000
Corporation's proportionate interest in oil and gas assets (in percentage)														16.00%
Bittern Field [Member]
Dispositions [Abstract]
Cash proceeds from asset sales															187,000,000
Gain (loss) on asset sale, pre-tax															172,000,000
Gain (loss) on asset sale, after-tax															172,000,000
Goodwill included in the divested businesses' net book value															12,000,000
Corporation's proportionate interest in oil and gas assets (in percentage)															28.00%
Level 3 [Member] \| Bayonne Energy Center LLC [Member]
Dispositions [Abstract]
Charge to reduce to fair value																84,000,000
Charge to reduce to fair value, after income taxes																$ 52,000,000