XML 60 R45.htm IDEA: XBRL DOCUMENT
v3.22.4

Summary Of Significant Accounting Policies - Deferred Recertification And Dry Dock Costs (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |
Recertification and dry dock amortization expense | $ 14.0 | $ 14.6 | $ 14.3
Minimum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Recertification and dry dock amortization period | 24 months |  |
Recertification process period | 1 month |  |
Maximum |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Recertification and dry dock amortization period | 60 months |  |
Recertification process period | 3 months |  |

X
- Definition Expense related to amortization of deferred recertification and dry dock costs + References No definition available. + Details
Name: | hlx_RecertificationAndDryDockAmortizationExpense
Namespace Prefix: | hlx_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The length of time in which the deferred recertification costs (including vessel dry dock costs) are amortized. + References No definition available. + Details
Name: | hlx_RecertificationAndDryDockCostAmortizationPeriod
Namespace Prefix: | hlx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The length of time to complete the recertification process (including vessel dry dock). + References No definition available. + Details
Name: | hlx_RecertificationProcessPeriod
Namespace Prefix: | hlx_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FiniteLivedIntangibleAssetsLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |