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v2.4.1.9

Schedule of Segment Reporting Information, Revenue by Vessel Class (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 and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | $ 378,126 us-gaap_SalesRevenueServicesNet | $ 360,713 us-gaap_SalesRevenueServicesNet | $ 1,150,588 us-gaap_SalesRevenueServicesNet | $ 1,056,011 us-gaap_SalesRevenueServicesNet
Americas Fleet Deepwater vessels |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 94,298 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember | 72,048 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember | 267,983 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember | 188,891 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember
Percentage of revenue | 25.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember | 20.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember | 23.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember | 18.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetDeepwaterVesselsMember
Americas Fleet Towing-Supply/supply |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 33,607 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember | 30,451 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember | 97,511 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember | 88,982 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember
Percentage of revenue | 9.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember | 9.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember | 9.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember | 9.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetTowingSupplyOrSupplyMember
Americas Fleet Other |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 6,649 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember | 7,349 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember | 23,056 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember | 24,148 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember
Percentage of revenue | 2.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember | 2.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember | 2.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember | 2.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetOtherMember
Americas Fleet |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 134,554 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember | 109,848 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember | 388,550 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember | 302,021 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember
Percentage of revenue | 36.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember | 31.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember | 34.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember | 29.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AmericasFleetMember
Asia and Pacific Fleet Deepwater vessels |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 20,575 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember | 20,142 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember | 72,492 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember | 64,357 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember
Percentage of revenue | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember | 6.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember | 6.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember | 6.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetDeepwaterVesselsMember
Asia/Pacific Fleet Towing-Supply/supply |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 13,487 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember | 15,235 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember | 45,862 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember | 49,516 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember
Percentage of revenue | 4.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember | 4.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember | 4.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetTowingSupplyAndSupplyMember
Asia and Pacific Fleet Other |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 984 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember | 948 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember | 2,930 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember | 2,838 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember
Asia and Pacific Fleet Other | Maximum |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Percentage of revenue | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetOtherMember
Asia/Pacific Fleet |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 35,046 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember | 36,325 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember | 121,284 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember | 116,711 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember
Percentage of revenue | 9.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember | 10.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember | 10.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember | 11.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_AsiaAndPacificFleetMember
Middle East/North Africa Fleet Deepwater vessels |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 25,615 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember | 18,805 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember | 64,336 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember | 50,389 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember
Percentage of revenue | 7.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember | 6.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetDeepwaterVesselsMember
Middle East/North Africa Fleet Towing-Supply/supply |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 29,441 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember | 31,481 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember | 93,435 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember | 84,741 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember
Percentage of revenue | 8.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember | 9.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember | 8.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember | 8.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetTowingSupplyAndSupplyMember
Middle East and North Africa Fleet Other |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 869 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember | 872 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember | 2,530 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember | 2,611 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember
Middle East and North Africa Fleet Other | Maximum |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Percentage of revenue | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember | 1.00%tdw_SalesRevenueServicesPercentage / us-gaap_RangeAxis = us-gaap_MaximumMember / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetOtherMember
Middle East/North Africa fleet |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 55,925 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember | 51,158 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember | 160,301 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember | 137,741 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember
Percentage of revenue | 15.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember | 14.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember | 14.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember | 13.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_MiddleEastAndNorthAfricaFleetMember
Sub-Saharan Africa/Europe Fleet Deepwater vessels |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 81,129 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember | 84,866 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember | 262,013 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember | 278,658 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember
Percentage of revenue | 21.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember | 23.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember | 23.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember | 26.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetDeepwaterVesselsMember
Sub-Saharan Africa/Europe Fleet Towing-Supply/supply |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 52,532 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember | 59,789 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember | 162,585 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember | 171,421 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember
Percentage of revenue | 14.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember | 17.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember | 14.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember | 16.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetTowingSupplyAndSupplyMember
Sub Saharan Africa And Europe Fleet Other |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 18,940 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember | 18,727 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember | 55,855 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember | 49,459 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember
Percentage of revenue | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember | 5.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetOtherMember
Sub-Saharan Africa/Europe Fleet |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 152,601 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember | 163,382 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember | 480,453 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember | 499,538 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember
Percentage of revenue | 40.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember | 45.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember | 42.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember | 47.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_SubSaharanAfricaAndEuropeFleetMember
Worldwide Fleet Deepwater vessels |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 221,617 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember | 195,861 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember | 666,824 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember | 582,295 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember
Percentage of revenue | 58.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember | 54.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember | 58.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember | 55.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetDeepwaterVesselsMember
Worldwide Fleet Towing-Supply/supply |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 129,067 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember | 136,956 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember | 399,393 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember | 394,660 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember
Percentage of revenue | 35.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember | 39.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember | 35.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember | 38.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetTowingSupplyAndSupplyMember
Worldwide Fleet Other |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | 27,442 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember | 27,896 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember | 84,371 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember | 79,056 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember
Percentage of revenue | 7.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember | 7.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember | 7.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember | 7.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetOtherMember
Worldwide Fleet |  |  |  |
Segment and Geographic Distribution of Operations [Line Items] |  |  |  |
Vessel revenues | $ 378,126 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember | $ 360,713 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember | $ 1,150,588 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember | $ 1,056,011 us-gaap_SalesRevenueServicesNet / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember
Percentage of revenue | 100.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember | 100.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember | 100.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember | 100.00%tdw_SalesRevenueServicesPercentage / tdw_RevenuesByVesselClassAxis = tdw_WorldwideFleetMember

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Namespace Prefix: | tdw_
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