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Commitment and Contingencies (Nigeria Marketing Agent Litigation) - Additional Information (Detail) (Federal Government of Nigeria, USD $) In Millions, unless otherwise specified | Mar. 01, 2013
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Federal Government of Nigeria |
Commitments and Contingencies Disclosure [Line Items] |
Due to affiliates | $ 16 tdw_DueToAffiliates / us-gaap_StatementGeographicalAxis = country_NG

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

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- Definition Due To Affiliates + References No definition available. + Details
Name: | tdw_DueToAffiliates
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant