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Valuation and Qualifying Accounts (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Mar. 31, 2013 | Mar. 31, 2014
Venezuela Customer |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Amount uncollectible and removed from account receivable | $ 637 us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs / tdw_SubsidiaryAxis = tdw_VenezuelaOperationsMember |
Revaluation allowance for doubtful accounts | 3,852 us-gaap_DebtorReorganizationItemsRevaluationOfCustomerRelatedObligations / tdw_SubsidiaryAxis = tdw_VenezuelaOperationsMember |
Mexico Customer |  |
Valuation and Qualifying Accounts Disclosure [Line Items] |  |
Collections from accounts receivable |  | 3,151 us-gaap_ProceedsFromCustomers / us-gaap_ValuationAllowancesAndReservesTypeAxis = tdw_MexicoCustomerMember
Amount uncollectible and removed from account receivable |  | $ 8,843 us-gaap_AllowanceForDoubtfulAccountsReceivableWriteOffs / us-gaap_ValuationAllowancesAndReservesTypeAxis = tdw_MexicoCustomerMember

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- Definition Amount of direct write-downs of accounts receivable charged against the allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=35738203&loc=d3e5074-111524 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.4) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 954 -SubTopic 310 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=35755819&loc=SL9156395-115594 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Amount of reorganization items related to revaluation of customer-related obligations such as, for example, changes in frequent flyer obligations in the airline industry. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=34712771&loc=d3e56145-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=6916575&loc=d3e55730-112764 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Cash receipts from customers during the current period which are usually for sales of goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | tdw_SubsidiaryAxis=tdw_VenezuelaOperationsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_ValuationAllowancesAndReservesTypeAxis=tdw_MexicoCustomerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |