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Long-Term Debt (Schedule Of Redemption Price By Maturity) (Details) | 12 Months Ended
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Dec. 31, 2013
Long-Term Debt [Abstract] |
Redemption Price, 2013 | 102.375%
Redemption Price, 2014 and Thereafter | 100.00%

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- Definition Senior Secured Notes Redemption Price In Current Fiscal Year + References No definition available. + Details
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Namespace Prefix: | hlx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Senior Secured Notes Redemption Price In Next Fiscal Year and Thereafter + References No definition available. + Details
Name: | hlx_SeniorSecuredNotesRedemptionPriceInNextFiscalYear
Namespace Prefix: | hlx_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_DebtDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration