Commitments And Contingencies Carrying Value Of Accumulated Costs

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- Definition

Commitments And Contingencies Percentage Of Third Party Credit

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- Definition

Deferred Related Gain Amortization Period

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- Definition

Funded Investment Commitments

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No definition available.

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- Definition

Number of Vessels

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No definition available.

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- Definition

Number of Vessels Sold

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- Definition

Significant commitment, new construction brake horsepower.

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- Definition

Significant Commitment New Construction Dead Weight Tons Capacity Range High

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- Definition

Significant Commitment New Construction Dead Weight Tons Capacity Range Low

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- Definition

Significant Commitment Number Of Vessel

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- Definition

Significant commitment projected delivery date range.

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- Definition

Significant Commitments, New Construction

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- Definition

Significant Delivery Commitment Number Of Vessels

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- Definition

The amount of increase related to special termination benefits offered to and accepted by employees in connection with their termination of employment that are only offered for a short period of time. A situation involving termination benefits may also involve a curtailment.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (a)(10)

-URI http://asc.fasb.org/extlink&oid=35743120&loc=d3e1928-114920

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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Termination Benefits

-URI http://asc.fasb.org/extlink&oid=6526498

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- Definition

The designation of funds furnished by a borrower to a lender to assure future payments of the borrower's real estate taxes and insurance obligations with respect to a mortgaged property. Escrow deposits may be made for a variety of other purposes such as earnest money and contingent payments. This element excludes replacement reserves which are an escrow separately provided for within the US GAAP taxonomy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 942

-SubTopic 210

-Section S99

-Paragraph 1

-Subparagraph (SX 210.9-03.10)

-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Commitments and Contingencies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	12 Months Ended
	Dec. 31, 2013 Vessel	Mar. 31, 2015 T	Mar. 31, 2013 Vessel
Significant Purchase and Supply Commitment [Line Items]
Cash compensation on termination of employment, maximum		43
Number of Vessels, commitments		21tdw_SignificantCommitmentNumberOfVessel
Towing Supply Vessels
Significant Purchase and Supply Commitment [Line Items]
Significant commitment, new construction brake horsepower		7,145
Deepwater PSVs
Significant Purchase and Supply Commitment [Line Items]
Significant commitment, new construction deadweight tons capacity range, low		3,800
Significant commitment, new construction deadweight tons capacity range, high		6,000
Significant commitment, new construction final delivery date		September 2016
Number of vessels took for delivery	2
Amount held as escrow	11.7
Number of vessels			2
Number of vessels, sold			1
Deferred gain amortization period			10 years
Fast, Crew/Supply Boat
Significant Purchase and Supply Commitment [Line Items]
Number of vessels under construction		1
Insurance coverage for the progress payments made on the vessel by the third party credit support		90.00%
Insurance coverage by the third party credit support for the carrying value of the accumulated costs		2.4
Committed and invested amount		8