XML 19 R70.htm IDEA: XBRL DOCUMENT v2.4.1.9
Segment Information, Geographical Data and Major Customers (Detail) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Segment Reporting Information [Line Items]        
Vessel revenues $ 378,126us-gaap_SalesRevenueServicesNet $ 360,713us-gaap_SalesRevenueServicesNet $ 1,150,588us-gaap_SalesRevenueServicesNet $ 1,056,011us-gaap_SalesRevenueServicesNet
Other operating revenues 9,428us-gaap_OtherSalesRevenueNet 4,535us-gaap_OtherSalesRevenueNet 20,167us-gaap_OtherSalesRevenueNet 11,259us-gaap_OtherSalesRevenueNet
Operating profit 81,901us-gaap_GrossProfit 80,707us-gaap_GrossProfit 249,022us-gaap_GrossProfit 227,954us-gaap_GrossProfit
Total revenues 387,554us-gaap_Revenues 365,248us-gaap_Revenues 1,170,755us-gaap_Revenues 1,067,270us-gaap_Revenues
Depreciation and amortization 43,331us-gaap_DepreciationAndAmortization 42,391us-gaap_DepreciationAndAmortization 130,150us-gaap_DepreciationAndAmortization 124,555us-gaap_DepreciationAndAmortization
General and administrative expenses (46,642)us-gaap_GeneralAndAdministrativeExpense (45,723)us-gaap_GeneralAndAdministrativeExpense (144,464)us-gaap_GeneralAndAdministrativeExpense (142,241)us-gaap_GeneralAndAdministrativeExpense
Additions to properties and equipment 103,055us-gaap_PropertyPlantAndEquipmentAdditions 182,561us-gaap_PropertyPlantAndEquipmentAdditions 235,254us-gaap_PropertyPlantAndEquipmentAdditions 652,631us-gaap_PropertyPlantAndEquipmentAdditions
Corporate expenses (10,245)tdw_CorporateExpenses (11,106)tdw_CorporateExpenses (33,172)tdw_CorporateExpenses (40,552)tdw_CorporateExpenses
(Loss) gain on asset dispositions, net (1,537)us-gaap_GainLossOnDispositionOfAssets 7,170us-gaap_GainLossOnDispositionOfAssets 4,996us-gaap_GainLossOnDispositionOfAssets 9,359us-gaap_GainLossOnDispositionOfAssets
Goodwill impairment (283,699)us-gaap_GoodwillImpairmentLoss (56,283)us-gaap_GoodwillImpairmentLoss (283,699)us-gaap_GoodwillImpairmentLoss [1] (56,283)us-gaap_GoodwillImpairmentLoss
Operating income (loss) (213,580)us-gaap_OperatingIncomeLoss 20,488us-gaap_OperatingIncomeLoss (62,853)us-gaap_OperatingIncomeLoss 140,478us-gaap_OperatingIncomeLoss
Foreign exchange gain 4,334us-gaap_ForeignCurrencyTransactionGainLossBeforeTax 1,341us-gaap_ForeignCurrencyTransactionGainLossBeforeTax 8,453us-gaap_ForeignCurrencyTransactionGainLossBeforeTax 4,269us-gaap_ForeignCurrencyTransactionGainLossBeforeTax
Equity in net earnings of unconsolidated companies   2,671us-gaap_IncomeLossFromEquityMethodInvestments 9,104us-gaap_IncomeLossFromEquityMethodInvestments 10,872us-gaap_IncomeLossFromEquityMethodInvestments
Interest income and other, net 434us-gaap_InvestmentIncomeNonoperating 137us-gaap_InvestmentIncomeNonoperating 1,555us-gaap_InvestmentIncomeNonoperating 1,415us-gaap_InvestmentIncomeNonoperating
Loss on early extinguishment of debt       (4,144)us-gaap_GainsLossesOnExtinguishmentOfDebt
Interest and other debt costs, net (12,239)us-gaap_InterestExpense (12,250)us-gaap_InterestExpense (37,927)us-gaap_InterestExpense (31,081)us-gaap_InterestExpense
Earnings (loss) before income taxes (221,051)tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes 12,387tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes (81,668)tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes 121,809tdw_IncomeLossFromContinuingOperationsBeforeIncomeTaxes
Americas        
Segment Reporting Information [Line Items]        
Goodwill impairment     (114,237)us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
 
Asia/Pacific        
Segment Reporting Information [Line Items]        
Goodwill impairment (283,700)us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
(56,300)us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
  (56,283)us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
Sub-Saharan Africa/Europe        
Segment Reporting Information [Line Items]        
Goodwill impairment     (169,462)us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
 
Operating Segments        
Segment Reporting Information [Line Items]        
Operating profit 82,933us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
80,940us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
254,570us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
228,361us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
Depreciation and amortization 41,639us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
41,608us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
125,038us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
122,270us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
Additions to properties and equipment 78,651us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
99,732us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
148,645us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
458,205us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
Operating Segments | Americas        
Segment Reporting Information [Line Items]        
Vessel revenues 134,554us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
109,848us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
388,550us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
302,021us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
Operating profit 33,784us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
25,579us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
100,770us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
69,555us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
Depreciation and amortization 11,825us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
11,311us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
35,623us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
32,253us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
Additions to properties and equipment 32,421us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
45,580us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
64,057us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
57,619us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AmericasSegmentMember
Operating Segments | Asia/Pacific        
Segment Reporting Information [Line Items]        
Vessel revenues 35,046us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
36,325us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
121,284us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
116,711us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
Operating profit 2,621us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
5,932us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
9,064us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
21,028us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
Depreciation and amortization 4,731us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
4,231us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
13,538us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
12,878us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
Additions to properties and equipment 44,983us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
652us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
68,193us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
1,620us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_AsiaPacificSegmentMember
Operating Segments | Middle East/North Africa        
Segment Reporting Information [Line Items]        
Vessel revenues 55,925us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
51,158us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
160,301us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
137,741us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
Operating profit 12,408us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
10,927us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
31,568us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
34,496us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
Depreciation and amortization 7,016us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
6,405us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
20,383us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
17,742us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
Additions to properties and equipment 424us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
805us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
1,659us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
1,714us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_MiddleEastAndNorthAfricaMember
Operating Segments | Sub-Saharan Africa/Europe        
Segment Reporting Information [Line Items]        
Vessel revenues 152,601us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
163,382us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
480,453us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
499,538us-gaap_SalesRevenueServicesNet
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
Operating profit 34,120us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
38,502us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
113,168us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
103,282us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
Depreciation and amortization 18,067us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
19,661us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
55,494us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
59,397us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
Additions to properties and equipment 823us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
[2] 52,695us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
[2] 14,736us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
[2] 397,252us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_OperatingSegmentsMember
/ us-gaap_StatementBusinessSegmentsAxis
= tdw_SubSaharanAfricaAndEuropeMember
[2]
Other        
Segment Reporting Information [Line Items]        
Operating profit (1,032)us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
(233)us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
(5,548)us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
(407)us-gaap_GrossProfit
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
Depreciation and amortization 858us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
  2,626us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
2us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
Additions to properties and equipment 10,206us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
22,267us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
18,931us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
31,780us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= tdw_OtherActivityMember
Corporate        
Segment Reporting Information [Line Items]        
Depreciation and amortization 834us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
783us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
2,486us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
2,283us-gaap_DepreciationAndAmortization
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
General and administrative expenses (9,411)us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
(10,323)us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
(30,686)us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
(38,269)us-gaap_GeneralAndAdministrativeExpense
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
Additions to properties and equipment $ 14,198us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[3] $ 60,562us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[3] $ 67,678us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[3] $ 162,646us-gaap_PropertyPlantAndEquipmentAdditions
/ us-gaap_ConsolidationItemsAxis
= us-gaap_CorporateNonSegmentMember
[3]
[1] The total carrying amount of goodwill at December 31, 2014 is net of accumulated impairment charges of $370.9 million.
[2] Included in Sub-Saharan Africa/Europe for the six months ended September 30, 2013 is $245.6 million related to vessels acquired through the acquisition of Troms Offshore.
[3] Included in Corporate are additions to properties and equipment relating to vessels currently under construction which have not yet been assigned to a non-corporate reporting segment as of the dates presented.