XML 31 R71.htm IDEA: XBRL DOCUMENT v2.4.1.9

Segment Information, Geographical Data and Major Customers (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Segment Reporting Information [Line Items]
Additions to properties and equipment	$ 231,685us-gaap_PaymentsToAcquirePropertyPlantAndEquipment	$ 397,458us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Sub-Saharan Africa/Europe | Troms Offshore Supply AS
Segment Reporting Information [Line Items]
Additions to properties and equipment		$ 245,600us-gaap_PaymentsToAcquirePropertyPlantAndEquipment / us-gaap_BusinessAcquisitionAxis = tdw_TromsOffshoreSupplyAsMember / us-gaap_StatementBusinessSegmentsAxis = tdw_SubSaharanAfricaAndEuropeMember

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- Definition

The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=tdw_SubSaharanAfricaAndEuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: