XML 59 R47.htm IDEA: XBRL DOCUMENT
v3.23.2

Note 12 - Properties and Equipment, Accrued Expenses, Other Current Liabilities, and Other Liabilities (Details Textual) $ in Millions |  | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 07, 2023 | Jun. 30, 2023 USD ($) | Dec. 31, 2022 | Jun. 30, 2022
Number of Vessels |  | 184 | 183 |
Number of Vessels, Held for Sale |  | 2 | 8 | 9
Solstad Offshore ASA [Member] |  |  |  |
Number Of Offshore Supply Vessels | 37 |  |  |
Alucat Crew Boats [Member] |  |  |  |
Number of Vessels |  | 5 |  |
Down Payment To Start Construction On Crew Boats |  | $ 2.8 |  |
Expected cost of Boats |  | $ 11.3 |  |

X
- Definition Represents down payments to start construction on crew boats + References No definition available. + Details
Name: | tdw_DownPaymentToStartConstructionOnCrewBoats
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The expected cost of Alucat crew boats + References No definition available. + Details
Name: | tdw_ExpectedCostOfAlucatCrewBoats
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the number of offshore supply vessels. + References No definition available. + Details
Name: | tdw_NumberOfOffshoreSupplyVessels
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of vessels. + References No definition available. + Details
Name: | tdw_NumberOfVessels
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of vessels classified as held for sale. + References No definition available. + Details
Name: | tdw_NumberOfVesselsHeldForSale
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_AssetAcquisitionAxis=tdw_SolstadOffshoreAsaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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