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SUPPLEMENTARY OIL AND GAS INFORMATION (UNAUDITED) (Schedule of Costs Incurred) (Details) (USD $) In Millions, unless otherwise specified | 7 Months Ended
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Dec. 31, 2013
Property acquisition costs: |  |
Proved properties | $ 12,205 | [1]
Unproved properties | 11,259 | [2]
Exploration costs | 502 |
Development costs | 854 |
Total | 24,820 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Oil and Gas Properties, Subject to Depletion | 12,203 |
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Oil and Gas Properties, Not Subject to Depletion | $ 11,087 |
[1] | Included $12.2 billion from the acquisitions of PXP and MMR.
[2] | Included $11.1 billion from the acquisitions of PXP and MMR.

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- Definition The amount of oil and gas properties not subject to depletion recognized as of the acquisition date. + References No definition available. + Details
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- Definition Costs incurred, including capitalized costs and costs charged to expense, associated with the acquisition of oil and gas properties that have proved reserves. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62038-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 18 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e62014-109447 + Details
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