XML 1100 R131.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Commitments and Contingencies (Merchant Navy Officers Pension Fund) - Additional Information (Detail) (Merchant Navy Officers Pension Fund) | 0 Months Ended
--- | ---
Jul. 15, 2013 Vessel
Merchant Navy Officers Pension Fund |
Commitments and Contingencies Disclosure [Line Items] |
Number of Vessels to be purchased | 7 tdw_SignificantPurchaseCommitmentVesselsToAcquire / us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis = tdw_MerchantNavyOfficersPensionFundMember

X
- Details
Name: | tdw_CommitmentsAndContingenciesDisclosureLineItems
Namespace Prefix: | tdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Significant purchase commitment, vessels to acquire + References No definition available. + Details
Name: | tdw_SignificantPurchaseCommitmentVesselsToAcquire
Namespace Prefix: | tdw_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration