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Supplemental Oil And Gas Disclosures (Schedule Of Base Prices Used In Determining The Standardized Measure) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
Supplemental Oil and Gas Disclosures [Abstract] |  |  |
Base prices, Barrel | $ 104.85 | $ 105.35 | $ 77.55
Base prices, Mcf | $ 3.38 | $ 4.34 | $ 4.40

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- Definition Average price per barrel of oil used to estimate proved oil reserves. + References No definition available. + Details
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- Definition Average price per mcf of gas used to estimate proved gas reserves, + References No definition available. + Details
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Namespace Prefix: | hlx_
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- Details
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Namespace Prefix: | hlx_
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