XML 84 R73.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Comparison of Total Assets (Detail) - USD ($) $ in Thousands | Dec. 31, 2016 | Mar. 31, 2016
--- | --- | ---
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | $ 4,315,199 | $ 4,983,793
Assets excluding equity investments |  | 3,452,323 | 4,063,801
Investments in, at equity, and advances to unconsolidated companies |  | 42,516 | 37,502
Assets except corporate portion |  | 3,494,839 | 4,101,303
All Other Segments |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 23,120 | 42,191
Operating Segments |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 3,429,203 | 4,021,610
Operating Segments | Americas |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 832,628 | 1,101,699
Operating Segments | Asia/Pacific |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 346,385 | 514,948
Operating Segments | Middle East |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 284,767 | 405,420
Operating Segments | Africa/Europe |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets |  | 1,965,423 | 1,999,543
Corporate |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |
Assets | [1],[2] | $ 820,360 | $ 882,490
[1] | At December 31, 2016 and March 31, 2016, $610.7 million and $651.2 million, respectively, of cash are included in Corporate.
[2] | Included in Corporate are vessels currently under construction which have not yet been assigned to a non-corporate reporting segment. A vessel’s construction costs are reported in Corporate until the earlier of the date the vessel is assigned to a non-corporate reporting segment or the date it is delivered. At December 31, 2016 and March 31, 2016, $94.6 million and $136.8 million, respectively, of vessel construction costs are included in Corporate.

X
- Definition Assets except for corporate portion. + References No definition available. + Details
Name: | tdw_AssetsExceptForCorporatePortion
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Assets excluding equity investments. + References No definition available. + Details
Name: | tdw_AssetsExcludingEquityInvestments
Namespace Prefix: | tdw_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Segment and Geographic Distribution of Operations [Line Items] + References No definition available. + Details
Name: | tdw_SegmentAndGeographicDistributionOfOperationsLineItems
Namespace Prefix: | tdw_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(12)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: 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(11)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 323 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570 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 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_EquityMethodInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=tdw_AmericasSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=tdw_AsiaPacificSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=tdw_MiddleEastSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=tdw_AfricaAndEuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |