XML 110 R96.htm IDEA: XBRL DOCUMENT
v3.24.0.1

Asset Retirement Obligations - Acquisitions (Details) - USD ($) $ in Thousands | 1 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Aug. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Asset Retirement Obligations |  |  |  |  |
Asset retirement obligation |  | $ 61,356 | $ 51,956 | $ 29,658 | $ 30,913
Production Facilities | Thunder Hawk Field |  |  |  |  |
Asset Retirement Obligations |  |  |  |  |
Ownership percentage | 62.50% |  |  |  |
Asset retirement obligation | $ 23,600 |  |  |  |

X
- Definition The percentage of ownership acquired of common stock or equity participation in the investee accounted for under the equity method of accounting. + References No definition available. + Details
Name: | hlx_EquityMethodInvestmentOwnershipPercentageAcquired
Namespace Prefix: | hlx_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 25 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481999/410-20-25-4 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 410 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147481850/410-20-50-1 + Details
Name: | us-gaap_AssetRetirementObligation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=hlx_ProductionFacilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=hlx_ThunderHawkFieldMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |