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v3.23.2

Commitments And Contingencies And Other Matters - Narrative (Details) | 1 Months Ended
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Jan. 31, 2023
Glomar Wave |
Commitments And Contingencies [Line Items] |
Term of charter agreement | 3 years

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- Definition Commitments And Contingencies [Line Items] + References No definition available. + Details
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Namespace Prefix: | hlx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Term of charter agreement in years. + References No definition available. + Details
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Namespace Prefix: | hlx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=hlx_GlomarWaveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |