XML 24 R55.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Commitments and Contingencies (Brazilian Customs) - Additional Information (Detail) BRL in Millions, $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Apr. 30, 2011 BRL Vessel | Jun. 30, 2015 USD ($) | Jun. 30, 2015 BRL
Commitments and Contingencies Disclosure [Line Items] |  |  |
Fines assessed | BRL 155 | $ 50 |
Number of Tidewater vessels that the subsidiaries failed to obtain import licenses from | 17 |  |
Disallowed amount of total fines by the administrative appeals board |  | 48 | BRL 149
Remaining amount of fines contested |  | 9 | 28
Decision disallowing the fines totaling | BRL |  |  | 127
Revised |  |  |
Commitments and Contingencies Disclosure [Line Items] |  |  |
Fines assessed |  | $ 41 | BRL 127

X
- Definition Amount Of Fines Disallowed By Administrative Appeals Board + References No definition available. + Details
Name: | tdw_AmountOfFinesDisallowedByAdministrativeAppealsBoard
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Assessed Fine + References No definition available. + Details
Name: | tdw_AssessedFine
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Commitments and Contingencies Disclosure [Line Items] + References No definition available. + Details
Name: | tdw_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | tdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Disallowed Amount of Total Fines by Administrative Appeals Board + References No definition available. + Details
Name: | tdw_DisallowedAmountOfTotalFinesByAdministrativeAppealsBoard
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number Of Vessels That The Subsidiaries Failed To Obtain Import Licenses From + References No definition available. + Details
Name: | tdw_NumberOfVesselsThatSubsidiariesFailedToObtainImportLicensesFrom
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Remaining Fine Amount + References No definition available. + Details
Name: | tdw_RemainingFineAmount
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | tdw_OperationRevenuesByEntityAxis=tdw_RevisedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |