XML 1047 R149.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Summary of Goodwill as a Percentage of Total Assets and Stockholders' Equity (Detail) | Mar. 31, 2014
--- | ---
Goodwill [Line Items] |
Goodwill as a percentage of total assets | 6.00%tdw_GoodwillPercentageOfTotalAssets
Goodwill as a percentage of stockholders' equity | 11.00%tdw_GoodwillPercentageOfStockholdersEquity

X
- Definition Goodwill, Percentage of Stockholders' Equity + References No definition available. + Details
Name: | tdw_GoodwillPercentageOfStockholdersEquity
Namespace Prefix: | tdw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Goodwill, Percentage of Total Assets + References No definition available. + Details
Name: | tdw_GoodwillPercentageOfTotalAssets
Namespace Prefix: | tdw_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

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