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v3.22.4

Leases - Narrative (Details) $ in Millions | Dec. 31, 2022 USD ($)
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Leases [Abstract] |
Minimum sublease income to be received in the future | $ 1.3

X
- Definition Future amount of sublease income excluding finance and operating lease expense. + References No definition available. + Details
Name: | hlx_LesseeOperatingSubleaseFutureMinimumSubleaseRentals
Namespace Prefix: | hlx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration