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Suspended Wells (Details) (USD $)
In Millions, unless otherwise specified |
3 Months Ended | |
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Mar. 31, 2013
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Dec. 31, 2012
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| Suspended Wells (Textual) [Abstract] | ||
| Capitalized cost of suspended wells | $ 1,239 | $ 1,038 |
| Increase (decrease) in capitalized cost of suspended wells | $ 201 |
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- Details
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- Definition
The change during the reporting period in capitalized exploratory well costs. This change comprises additions of capitalized costs where proven reserves have not been found, reclassification of capitalized costs where proved reserves were found, and capitalized costs that were expensed when proved reserves were definitively not found. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of capitalized exploratory well costs that is pending the determination of proved reserves. This does not include amounts that were capitalized and subsequently expensed in the same annual period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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