Drilling Carry Determination, Amount Per Well Short

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- Definition

Drilling Carry Received or Billed.

+ References

No definition available.

+ Details

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- Definition

Minimum number of net wells required to be drilled in the area of mutual interest under terms of agreement.

+ References

No definition available.

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- Definition

Number of net wells drilled in the area of mutual interest as of a specified date.

+ References

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- Definition

Oil and Gas Property, Cumulative Impairment based on Ceiling Test Calculation.

+ References

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- Definition

Total Drilling Carry

+ References

No definition available.

+ Details

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- Definition

Amount of other assets held-for-sale that are not part of a disposal group, expected to be sold within a year or the normal operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 15

-Paragraph 4

-Subparagraph (b)(2)

-URI http://asc.fasb.org/extlink&oid=6390208&loc=d3e400-110220

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

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- Definition

The excess of unamortized costs capitalized within a cost center, less related deferred income taxes, over the cost center ceiling limitation, which is charged to expense for oil and gas producing companies that use full cost method of accounting for investments in oil and gas producing properties.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 932

-SubTopic 360

-Section S99

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=27015634&loc=d3e516453-122869

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 10

-Paragraph c

-Subparagraph 4(ii)

-Article 4

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Property, Plant and Equipment - Narrative (Details)	3 Months Ended	6 Months Ended
Property, Plant and Equipment - Narrative (Details)	Jun. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2014 USD ($) well	May. 31, 2015 well	Dec. 31, 2014 USD ($)
Property, Plant and Equipment
Cumulative full cost ceiling limitation impairment	$ 6,300,000,000	$ 6,300,000,000			$ 3,700,000,000
Full cost ceiling limitation impairment	1,500,000,000	2,600,000,000	$ 164,800,000
Repsol E&P USA, Inc.
Property, Plant and Equipment
Minimum net wells \| well			484
Net wells \| well				453
Repsol E&P USA, Inc. \| Potential drilling carry costs
Property, Plant and Equipment
Drilling carry determination, amount per well short			$ 1,000,000
Repsol E&P USA, Inc.
Property, Plant and Equipment
Drilling carry received or billed			175,400,000
Maximum \| Repsol E&P USA, Inc. \| Potential drilling carry costs
Property, Plant and Equipment
Total drilling carry, maximum	31,000,000	31,000,000	$ 75,000,000.0
Other Current Assets \| Permian Region \| Drilling Assets
Property, Plant and Equipment
Assets classified as held-for-sale	$ 20,000,000	$ 20,000,000