SUPPLEMENTARY OIL AND GAS INFORMATION (UNAUDITED) (Schedule of Capitalized Costs) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Supplementary Oil and Gas Information [Abstract]
Properties subject to amortization	$ 13,829
Accumulated amortization	(1,357)
Total	$ 12,472

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Amount of accumulated depreciation, depletion, amortization and valuation allowance relating to oil and gas producing activities.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 235

-Section 50

-Paragraph 13

-URI http://asc.fasb.org/extlink&oid=8451039&loc=d3e61901-109447

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- Definition

The sum of capitalized costs relating to oil and gas producing activities before accounting for accumulated depreciation.

+ References

+ Details

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- Definition

Net amount of capitalized costs relating to oil and gas producing activities.

+ References

+ Details

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