Segment disclosures

Company overview

TIDEWATER INC

Each reported dimension combination stays separate. Revenue and operating income are shown as reported, with their dates and sources.

Revenue · Reported segment facts

63 dimension combinations 384 retained observations 38 reported periods

Counts describe retained dimensioned rows only. Periods and members can change across reports, and this view does not infer missing values or expected segment totals.

Operating Segments · Vessel · Americas1

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=tdw:VesselMember;us-gaap:StatementBusinessSegmentsAxis=tdw:Americas1Member
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3053969000 USD20260803Open filing evidence
2026-01-01 – 2026-06-30112495000 USD20260803Open filing evidence
2026-01-01 – 2026-03-3158526000 USD20260504Open filing evidence
2025-01-01 – 2025-12-31270229000 USD20260302Open filing evidence
2025-07-01 – 2025-09-3076913000 USD20251110Open filing evidence
2025-01-01 – 2025-09-30200523000 USD20251110Open filing evidence
2025-04-01 – 2025-06-3068758000 USD20260803Open filing evidence
2025-01-01 – 2025-06-30123610000 USD20260803Open filing evidence
2025-01-01 – 2025-03-3154852000 USD20260504Open filing evidence
2024-01-01 – 2024-12-31261929000 USD20260302Open filing evidence
2024-07-01 – 2024-09-3064606000 USD20251110Open filing evidence
2024-01-01 – 2024-09-30201689000 USD20251110Open filing evidence
2024-04-01 – 2024-06-3073142000 USD20250804Open filing evidence
2024-01-01 – 2024-06-30137083000 USD20250804Open filing evidence
2024-01-01 – 2024-03-3163941000 USD20250505Open filing evidence
2023-01-01 – 2023-12-31237205000 USD20260302Open filing evidence
2023-07-01 – 2023-09-3070717000 USD20241107Open filing evidence
2023-01-01 – 2023-09-30168780000 USD20241107Open filing evidence
2023-04-01 – 2023-06-3050376000 USD20240806Open filing evidence
2023-01-01 – 2023-06-3098063000 USD20240806Open filing evidence
2023-01-01 – 2023-03-3147687000 USD20240502Open filing evidence
2022-01-01 – 2022-12-31146871000 USD20250227Open filing evidence
2022-07-01 – 2022-09-3039122000 USD20231106Open filing evidence
2022-01-01 – 2022-09-30105086000 USD20231106Open filing evidence
2022-04-01 – 2022-06-3037520000 USD20230807Open filing evidence
2022-01-01 – 2022-06-3065964000 USD20230807Open filing evidence
2022-01-01 – 2022-03-3128444000 USD20230508Open filing evidence
2021-01-01 – 2021-12-31102151000 USD20240229Open filing evidence
2021-07-01 – 2021-09-3024564000 USD20221103Open filing evidence
2021-01-01 – 2021-09-3074269000 USD20221103Open filing evidence
2021-04-01 – 2021-06-3023481000 USD20220804Open filing evidence
2021-01-01 – 2021-06-3049705000 USD20220804Open filing evidence
2021-01-01 – 2021-03-3126224000 USD20220509Open filing evidence
2020-01-01 – 2020-12-31126676000 USD20230228Open filing evidence
2019-01-01 – 2019-12-31136958000 USD20220309Open filing evidence

Operating Segments · Vessel · Asia Pacific1

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=tdw:VesselMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AsiaPacific1Member
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3047948000 USD20260803Open filing evidence
2026-01-01 – 2026-06-3094512000 USD20260803Open filing evidence
2026-01-01 – 2026-03-3146564000 USD20260504Open filing evidence
2025-01-01 – 2025-12-31189747000 USD20260302Open filing evidence
2025-07-01 – 2025-09-3053786000 USD20251110Open filing evidence
2025-01-01 – 2025-09-30147710000 USD20251110Open filing evidence
2025-04-01 – 2025-06-3045696000 USD20260803Open filing evidence
2025-01-01 – 2025-06-3093924000 USD20260803Open filing evidence
2025-01-01 – 2025-03-3148228000 USD20260504Open filing evidence
2024-01-01 – 2024-12-31210328000 USD20260302Open filing evidence
2024-07-01 – 2024-09-3056283000 USD20251110Open filing evidence
2024-01-01 – 2024-09-30159285000 USD20251110Open filing evidence
2024-04-01 – 2024-06-3055221000 USD20250804Open filing evidence
2024-01-01 – 2024-06-30103002000 USD20250804Open filing evidence
2024-01-01 – 2024-03-3147781000 USD20250505Open filing evidence
2023-01-01 – 2023-12-31122235000 USD20260302Open filing evidence
2023-07-01 – 2023-09-3038994000 USD20241107Open filing evidence
2023-01-01 – 2023-09-3083603000 USD20241107Open filing evidence
2023-04-01 – 2023-06-3022585000 USD20240806Open filing evidence
2023-01-01 – 2023-06-3044609000 USD20240806Open filing evidence
2023-01-01 – 2023-03-3122024000 USD20240502Open filing evidence
2022-01-01 – 2022-12-3164231000 USD20250227Open filing evidence
2022-07-01 – 2022-09-3023902000 USD20231106Open filing evidence
2022-01-01 – 2022-09-3045161000 USD20231106Open filing evidence
2022-04-01 – 2022-06-3016362000 USD20230807Open filing evidence
2022-01-01 – 2022-06-3021259000 USD20230807Open filing evidence
2022-01-01 – 2022-03-314897000 USD20230508Open filing evidence
2021-01-01 – 2021-12-3118142000 USD20240229Open filing evidence
2021-07-01 – 2021-09-304786000 USD20221103Open filing evidence
2021-01-01 – 2021-09-3013228000 USD20221103Open filing evidence
2021-04-01 – 2021-06-304870000 USD20220804Open filing evidence
2021-01-01 – 2021-06-308442000 USD20220804Open filing evidence
2020-01-01 – 2020-12-3114348000 USD20230228Open filing evidence

Operating Segments · Vessel · Europe And Mediterranean

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=tdw:VesselMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-30112076000 USD20260803Open filing evidence
2026-01-01 – 2026-06-30199021000 USD20260803Open filing evidence
2026-01-01 – 2026-03-3186945000 USD20260504Open filing evidence
2025-01-01 – 2025-12-31343627000 USD20260302Open filing evidence
2025-07-01 – 2025-09-3083740000 USD20251110Open filing evidence
2025-01-01 – 2025-09-30261225000 USD20251110Open filing evidence
2025-04-01 – 2025-06-3099280000 USD20260803Open filing evidence
2025-01-01 – 2025-06-30177485000 USD20260803Open filing evidence
2025-01-01 – 2025-03-3178205000 USD20260504Open filing evidence
2024-01-01 – 2024-12-31333081000 USD20260302Open filing evidence
2024-07-01 – 2024-09-3085325000 USD20251110Open filing evidence
2024-01-01 – 2024-09-30248972000 USD20251110Open filing evidence
2024-04-01 – 2024-06-3083266000 USD20250804Open filing evidence
2024-01-01 – 2024-06-30163647000 USD20250804Open filing evidence
2024-01-01 – 2024-03-3180381000 USD20250505Open filing evidence
2023-01-01 – 2023-12-31230217000 USD20260302Open filing evidence
2023-07-01 – 2023-09-3078929000 USD20241107Open filing evidence
2023-01-01 – 2023-09-30149474000 USD20241107Open filing evidence
2023-04-01 – 2023-06-3039295000 USD20240806Open filing evidence
2023-01-01 – 2023-06-3070545000 USD20240806Open filing evidence
2023-01-01 – 2023-03-3131250000 USD20240502Open filing evidence
2022-01-01 – 2022-12-31129578000 USD20250227Open filing evidence
2022-07-01 – 2022-09-3039702000 USD20231106Open filing evidence
2022-01-01 – 2022-09-3096096000 USD20231106Open filing evidence
2022-04-01 – 2022-06-3032475000 USD20230807Open filing evidence
2022-01-01 – 2022-06-3056394000 USD20230807Open filing evidence
2022-01-01 – 2022-03-3123919000 USD20230508Open filing evidence
2021-01-01 – 2021-12-3180914000 USD20240229Open filing evidence
2021-07-01 – 2021-09-3021197000 USD20221103Open filing evidence
2021-01-01 – 2021-09-3058413000 USD20221103Open filing evidence
2021-04-01 – 2021-06-3022467000 USD20220804Open filing evidence
2021-01-01 – 2021-06-3037216000 USD20220804Open filing evidence
2021-01-01 – 2021-03-3114749000 USD20220509Open filing evidence
2020-01-01 – 2020-12-3183602000 USD20230228Open filing evidence
2019-01-01 – 2019-12-31123711000 USD20220309Open filing evidence

Operating Segments · Vessel · Middle East1

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=tdw:VesselMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEast1Member
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3048483000 USD20260803Open filing evidence
2026-01-01 – 2026-06-3094052000 USD20260803Open filing evidence
2026-01-01 – 2026-03-3145569000 USD20260504Open filing evidence
2025-01-01 – 2025-12-31172573000 USD20260302Open filing evidence
2025-07-01 – 2025-09-3042035000 USD20251110Open filing evidence
2025-01-01 – 2025-09-30125552000 USD20251110Open filing evidence
2025-04-01 – 2025-06-3040215000 USD20260803Open filing evidence
2025-01-01 – 2025-06-3083517000 USD20260803Open filing evidence
2025-01-01 – 2025-03-3143302000 USD20260504Open filing evidence
2024-01-01 – 2024-12-31152187000 USD20260302Open filing evidence
2024-07-01 – 2024-09-3036947000 USD20251110Open filing evidence
2024-01-01 – 2024-09-30111415000 USD20251110Open filing evidence
2024-04-01 – 2024-06-3036536000 USD20250804Open filing evidence
2024-01-01 – 2024-06-3074468000 USD20250804Open filing evidence
2024-01-01 – 2024-03-3137932000 USD20250505Open filing evidence
2023-01-01 – 2023-12-31135375000 USD20260302Open filing evidence
2023-07-01 – 2023-09-3034685000 USD20241107Open filing evidence
2023-01-01 – 2023-09-3097303000 USD20241107Open filing evidence
2023-04-01 – 2023-06-3031856000 USD20240806Open filing evidence
2023-01-01 – 2023-06-3062618000 USD20240806Open filing evidence
2023-01-01 – 2023-03-3130762000 USD20240502Open filing evidence
2022-01-01 – 2022-12-31110375000 USD20250227Open filing evidence
2022-07-01 – 2022-09-3031186000 USD20231106Open filing evidence
2022-01-01 – 2022-09-3079800000 USD20231106Open filing evidence
2022-04-01 – 2022-06-3028396000 USD20230807Open filing evidence
2022-01-01 – 2022-06-3048614000 USD20230807Open filing evidence
2022-01-01 – 2022-03-3120218000 USD20230508Open filing evidence
2021-01-01 – 2021-12-3184395000 USD20240229Open filing evidence
2021-07-01 – 2021-09-3020847000 USD20221103Open filing evidence
2021-01-01 – 2021-09-3062447000 USD20221103Open filing evidence
2021-04-01 – 2021-06-3020758000 USD20220804Open filing evidence
2021-01-01 – 2021-06-3041600000 USD20220804Open filing evidence
2020-01-01 – 2020-12-3182785000 USD20230228Open filing evidence

Operating Segments · Vessel · Middle East And Asia Pacific

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=tdw:VesselMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificMember
PeriodValueUnitFiledEvidence
2022-01-01 – 2022-03-3125115000 USD20220509Open filing evidence
2021-01-01 – 2021-12-31102537000 USD20220309Open filing evidence
2021-01-01 – 2021-03-3124414000 USD20220509Open filing evidence
2020-01-01 – 2020-12-3197133000 USD20220309Open filing evidence
2019-01-01 – 2019-12-3190321000 USD20220309Open filing evidence

Operating Segments · Vessel · West Africa

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=tdw:VesselMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaMember
PeriodValueUnitFiledEvidence
2026-04-01 – 2026-06-3077255000 USD20260803Open filing evidence
2026-01-01 – 2026-06-30163069000 USD20260803Open filing evidence
2026-01-01 – 2026-03-3185814000 USD20260504Open filing evidence
2025-01-01 – 2025-12-31362755000 USD20260302Open filing evidence
2025-07-01 – 2025-09-3082017000 USD20251110Open filing evidence
2025-01-01 – 2025-09-30271038000 USD20251110Open filing evidence
2025-04-01 – 2025-06-3082909000 USD20260803Open filing evidence
2025-01-01 – 2025-06-30189021000 USD20260803Open filing evidence
2025-01-01 – 2025-03-31106112000 USD20260504Open filing evidence
2024-01-01 – 2024-12-31380112000 USD20260302Open filing evidence
2024-07-01 – 2024-09-3095324000 USD20251110Open filing evidence
2024-01-01 – 2024-09-30272813000 USD20251110Open filing evidence
2024-04-01 – 2024-06-3088838000 USD20250804Open filing evidence
2024-01-01 – 2024-06-30177489000 USD20250804Open filing evidence
2024-01-01 – 2024-03-3188651000 USD20250505Open filing evidence
2023-01-01 – 2023-12-31273961000 USD20260302Open filing evidence
2023-07-01 – 2023-09-3073650000 USD20241107Open filing evidence
2023-01-01 – 2023-09-30199318000 USD20241107Open filing evidence
2023-04-01 – 2023-06-3066211000 USD20240806Open filing evidence
2023-01-01 – 2023-06-30125668000 USD20240806Open filing evidence
2023-01-01 – 2023-03-3159457000 USD20240502Open filing evidence
2022-01-01 – 2022-12-31190349000 USD20250227Open filing evidence
2022-07-01 – 2022-09-3056335000 USD20231106Open filing evidence
2022-01-01 – 2022-09-30130155000 USD20231106Open filing evidence
2022-04-01 – 2022-06-3047422000 USD20230807Open filing evidence
2022-01-01 – 2022-06-3073820000 USD20230807Open filing evidence
2022-01-01 – 2022-03-3126398000 USD20230508Open filing evidence
2021-01-01 – 2021-12-3175967000 USD20240229Open filing evidence
2021-07-01 – 2021-09-3020240000 USD20221103Open filing evidence
2021-01-01 – 2021-09-3052784000 USD20221103Open filing evidence
2021-04-01 – 2021-06-3016938000 USD20220804Open filing evidence
2021-01-01 – 2021-06-3032544000 USD20220804Open filing evidence
2021-01-01 – 2021-03-3115606000 USD20220509Open filing evidence
2020-01-01 – 2020-12-3178763000 USD20230228Open filing evidence
2019-01-01 – 2019-12-31126025000 USD20220309Open filing evidence

Operating Segments · Service · Americas1

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:Americas1Member
PeriodValueUnitFiledEvidence
2020-01-01 – 2020-12-31126676000 USD20210304Open filing evidence
2019-01-01 – 2019-12-31136958000 USD20210304Open filing evidence
2018-01-01 – 2018-12-31118534000 USD20210304Open filing evidence

Operating Segments · Service · Americas One

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasOneMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3126224000 USD20210506Open filing evidence
2020-01-01 – 2020-03-3131859000 USD20210506Open filing evidence

Operating Segments · Service · Americas Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3032601000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3058682000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-08-01 – 2017-12-3145784000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Service · Americas Segment · Predecessor

Consolidation Items · Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3140848000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-04-01 – 2017-06-3031887000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-30112420000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2016-04-01 – 2017-03-31239843000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Service · Europe And Mediterranean

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3114749000 USD20210506Open filing evidence
2020-01-01 – 2020-12-3183602000 USD20210304Open filing evidence
2020-01-01 – 2020-03-3129491000 USD20210506Open filing evidence
2019-01-01 – 2019-12-31123711000 USD20210304Open filing evidence
2018-01-01 – 2018-12-3156263000 USD20210304Open filing evidence

Operating Segments · Service · Europe And Mediterranean Sea Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3013357000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3022980000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-08-01 – 2017-12-3119895000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Service · Europe And Mediterranean Sea Segment · Predecessor

Consolidation Items · Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3115466000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-04-01 – 2017-06-3011031000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-3021197000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2016-04-01 – 2017-03-3142667000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Service · Middle East And Asia Pacific

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3124414000 USD20210506Open filing evidence
2020-01-01 – 2020-12-3197133000 USD20210304Open filing evidence
2020-01-01 – 2020-03-3124828000 USD20210506Open filing evidence
2019-01-01 – 2019-12-3190321000 USD20210304Open filing evidence
2018-01-01 – 2018-12-3180195000 USD20210304Open filing evidence

Operating Segments · Service · Middle East And Asia Pacific Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3022406000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3040794000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-08-01 – 2017-12-3139845000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Service · Middle East And Asia Pacific Segment · Predecessor

Consolidation Items · Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3136313000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-04-01 – 2017-06-3027766000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-3054444000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2016-04-01 – 2017-03-31114618000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Service · West Africa

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaMember
PeriodValueUnitFiledEvidence
2021-01-01 – 2021-03-3115606000 USD20210506Open filing evidence
2020-01-01 – 2020-12-3178763000 USD20210304Open filing evidence
2020-01-01 – 2020-03-3125796000 USD20210506Open filing evidence
2019-01-01 – 2019-12-31126025000 USD20210304Open filing evidence
2018-01-01 – 2018-12-31142214000 USD20210304Open filing evidence

Operating Segments · Service · West Africa Segment

Consolidation Items · Product Or Service · Statement Business Segments

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3035810000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3069212000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-08-01 – 2017-12-3166360000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Service · West Africa Segment · Predecessor

Consolidation Items · Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3153970000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-04-01 – 2017-06-3041573000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-3081101000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2016-04-01 – 2017-03-31186688000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Operating Segments · Americas Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-31136958000 USD20200302Open filing evidence
2018-01-01 – 2018-12-31118534000 USD20200302Open filing evidence
2017-08-01 – 2017-12-3145784000 USD20200302Open filing evidence
2017-04-01 – 2017-07-3140848000 USD20200302Open filing evidence

Operating Segments · Americas Segment · Predecessor · Service

Consolidation Items · Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3140848000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence
2016-04-01 – 2017-03-31239843000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence

Operating Segments · Europe And Mediterranean Sea Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-31123711000 USD20200302Open filing evidence
2018-01-01 – 2018-12-3156263000 USD20200302Open filing evidence
2017-08-01 – 2017-12-3119895000 USD20200302Open filing evidence
2017-04-01 – 2017-07-3115466000 USD20200302Open filing evidence

Operating Segments · Europe And Mediterranean Sea Segment · Predecessor · Service

Consolidation Items · Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3115466000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence
2016-04-01 – 2017-03-3142667000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence

Operating Segments · Middle East And Asia Pacific Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-3190321000 USD20200302Open filing evidence
2018-01-01 – 2018-12-3180195000 USD20200302Open filing evidence
2017-08-01 – 2017-12-3139845000 USD20200302Open filing evidence
2017-04-01 – 2017-07-3136313000 USD20200302Open filing evidence

Operating Segments · Middle East And Asia Pacific Segment · Predecessor · Service

Consolidation Items · Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3136313000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence
2016-04-01 – 2017-03-31114618000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence

Operating Segments · West Africa Segment · Service

Consolidation Items · Statement Business Segments · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2019-01-01 – 2019-12-31126025000 USD20200302Open filing evidence
2018-01-01 – 2018-12-31142214000 USD20200302Open filing evidence
2017-08-01 – 2017-12-3166360000 USD20200302Open filing evidence
2017-04-01 – 2017-07-3153970000 USD20200302Open filing evidence

Operating Segments · West Africa Segment · Predecessor · Service

Consolidation Items · Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-07-3153970000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence
2016-04-01 – 2017-03-31186688000 USD2019-03-01 · 03:30:52.000ZOpen filing evidence

Early Cancellation Of Long Term Vessel Charter Contract · Americas Segment · Predecessor

Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ProductOrServiceAxis=tdw:EarlyCancellationOfLongTermVesselCharterContractMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-01-01 – 2017-07-3139100000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Product And Service Other · Subsea Business

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;us-gaap:StatementBusinessSegmentsAxis=tdw:SubseaBusinessMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-06-30500000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-30800000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · Americas Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3032601000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3058682000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · Americas Segment · Predecessor

Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-06-3031887000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-30112420000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · Europe And Mediterranean Sea Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3013357000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3022980000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · Europe And Mediterranean Sea Segment · Predecessor

Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-06-3011031000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-3021197000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · Middle East And Asia Pacific Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3022406000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3040794000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · Middle East And Asia Pacific Segment · Predecessor

Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-06-3027766000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-3054444000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · West Africa Segment

Product Or Service · Statement Business Segments

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember
PeriodValueUnitFiledEvidence
2018-04-01 – 2018-06-3035810000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2018-01-01 – 2018-06-3069212000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Service · West Africa Segment · Predecessor

Product Or Service · Statement Business Segments · Statement Scenario

Source dimensions srt:ProductOrServiceAxis=us-gaap:ServiceMember;us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-04-01 – 2017-06-3041573000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence
2017-01-01 – 2017-06-3081101000 USD2018-10-27 · 01:42:55.000ZOpen filing evidence

Americas Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3034044000 USD20200730Open filing evidence
2020-01-01 – 2020-06-3065903000 USD20200730Open filing evidence
2020-01-01 – 2020-03-3131859000 USD20200511Open filing evidence
2019-07-01 – 2019-09-3033147000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-01-01 – 2019-09-30103624000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-04-01 – 2019-06-3035199000 USD20200730Open filing evidence
2019-01-01 – 2019-06-3070477000 USD20200730Open filing evidence
2019-01-01 – 2019-03-3135279000 USD20200511Open filing evidence
2018-07-01 – 2018-09-3028039000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-01-01 – 2018-09-3086721000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-04-01 – 2018-06-3032601000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-06-3058682000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-03-3126081000 USD2019-05-07 · 00:59:55.000ZOpen filing evidence

Americas Segment · Operating Segments · Predecessor · Service

Statement Business Segments · Consolidation Items · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-01-01 – 2017-07-31121380000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3031887000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-30112420000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

Americas Segment · Service

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3028039000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-01-01 – 2018-09-3086721000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-04-01 – 2018-06-3032601000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2018-01-01 – 2018-06-3058682000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-08-01 – 2017-09-3017449000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Americas Segment · Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3028039000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-08-01 – 2017-09-3017449000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Americas Segment · Predecessor · Service

Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-318961000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-01-01 – 2017-07-31121380000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3031887000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-30112420000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

Americas Segment · Predecessor · Service · Operating Segments

Statement Business Segments · Statement Scenario · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:AmericasSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-318961000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Europe And Mediterranean Sea Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3020620000 USD20200730Open filing evidence
2020-01-01 – 2020-06-3050111000 USD20200730Open filing evidence
2020-01-01 – 2020-03-3129491000 USD20200511Open filing evidence
2019-07-01 – 2019-09-3030946000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-01-01 – 2019-09-3094531000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-04-01 – 2019-06-3035027000 USD20200730Open filing evidence
2019-01-01 – 2019-06-3063585000 USD20200730Open filing evidence
2019-01-01 – 2019-03-3128558000 USD20200511Open filing evidence
2018-07-01 – 2018-09-3012566000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-01-01 – 2018-09-3035546000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-04-01 – 2018-06-3013357000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-06-3022980000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-03-319623000 USD2019-05-07 · 00:59:55.000ZOpen filing evidence

Europe And Mediterranean Sea Segment · Operating Segments · Predecessor · Service

Statement Business Segments · Consolidation Items · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-01-01 – 2017-07-3125631000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3011031000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-3021197000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

Europe And Mediterranean Sea Segment · Service

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3012566000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-01-01 – 2018-09-3035546000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-04-01 – 2018-06-3013357000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2018-01-01 – 2018-06-3022980000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-08-01 – 2017-09-308860000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Europe And Mediterranean Sea Segment · Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3012566000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-08-01 – 2017-09-308860000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Europe And Mediterranean Sea Segment · Predecessor · Service

Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-314435000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-01-01 – 2017-07-3125631000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3011031000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-3021197000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

Europe And Mediterranean Sea Segment · Predecessor · Service · Operating Segments

Statement Business Segments · Statement Scenario · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:EuropeAndMediterraneanSeaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-314435000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Middle East And Asia Pacific Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3023983000 USD20200730Open filing evidence
2020-01-01 – 2020-06-3048811000 USD20200730Open filing evidence
2020-01-01 – 2020-03-3124828000 USD20200511Open filing evidence
2019-07-01 – 2019-09-3022765000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-01-01 – 2019-09-3063670000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-04-01 – 2019-06-3020449000 USD20200730Open filing evidence
2019-01-01 – 2019-06-3040905000 USD20200730Open filing evidence
2019-01-01 – 2019-03-3120456000 USD20200511Open filing evidence
2018-07-01 – 2018-09-3019927000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-01-01 – 2018-09-3060721000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-04-01 – 2018-06-3022406000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-06-3040794000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-03-3118388000 USD2019-05-07 · 00:59:55.000ZOpen filing evidence

Middle East And Asia Pacific Segment · Operating Segments · Predecessor · Service

Statement Business Segments · Consolidation Items · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-01-01 – 2017-07-3162991000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3027766000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-3054444000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

Middle East And Asia Pacific Segment · Service

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3019927000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-01-01 – 2018-09-3060721000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-04-01 – 2018-06-3022406000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2018-01-01 – 2018-06-3040794000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-08-01 – 2017-09-3016669000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Middle East And Asia Pacific Segment · Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3019927000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-08-01 – 2017-09-3016669000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Middle East And Asia Pacific Segment · Predecessor · Service

Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-318547000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-01-01 – 2017-07-3162991000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3027766000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-3054444000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

Middle East And Asia Pacific Segment · Predecessor · Service · Operating Segments

Statement Business Segments · Statement Scenario · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:MiddleEastAndAsiaPacificSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-318547000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

Subsea Business · Product And Service Other

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:SubseaBusinessMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember
PeriodValueUnitFiledEvidence
2017-08-01 – 2017-09-301600000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-30500000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-30800000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

Subsea Business · Product And Service Other · Predecessor

Statement Business Segments · Product Or Service · Statement Scenario

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:SubseaBusinessMember;srt:ProductOrServiceAxis=us-gaap:ProductAndServiceOtherMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-31400000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-01-01 – 2017-07-311100000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

West Africa Segment · Operating Segments · Service

Statement Business Segments · Consolidation Items · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2020-04-01 – 2020-06-3022328000 USD20200730Open filing evidence
2020-01-01 – 2020-06-3048124000 USD20200730Open filing evidence
2020-01-01 – 2020-03-3125796000 USD20200511Open filing evidence
2019-07-01 – 2019-09-3030315000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-01-01 – 2019-09-3098651000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2019-04-01 – 2019-06-3032966000 USD20200730Open filing evidence
2019-01-01 – 2019-06-3068336000 USD20200730Open filing evidence
2019-01-01 – 2019-03-3135369000 USD20200511Open filing evidence
2018-07-01 – 2018-09-3036479000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-01-01 – 2018-09-30105691000 USD2019-11-12 · 13:01:56.000ZOpen filing evidence
2018-04-01 – 2018-06-3035810000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-06-3069212000 USD2019-08-09 · 20:24:40.000ZOpen filing evidence
2018-01-01 – 2018-03-3133402000 USD2019-05-07 · 00:59:55.000ZOpen filing evidence

West Africa Segment · Operating Segments · Predecessor · Service

Statement Business Segments · Consolidation Items · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-01-01 – 2017-07-3193499000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3041573000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-3081101000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

West Africa Segment · Service

Statement Business Segments · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3036479000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-01-01 – 2018-09-30105691000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2018-04-01 – 2018-06-3035810000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2018-01-01 – 2018-06-3069212000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-08-01 – 2017-09-3027593000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

West Africa Segment · Service · Operating Segments

Statement Business Segments · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2018-07-01 – 2018-09-3036479000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-08-01 – 2017-09-3027593000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence

West Africa Segment · Predecessor · Service

Statement Business Segments · Statement Scenario · Product Or Service

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-3112397000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-01-01 – 2017-07-3193499000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence
2017-04-01 – 2017-06-3041573000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence
2017-01-01 – 2017-06-3081101000 USD2018-08-14 · 01:34:29.000ZOpen filing evidence

West Africa Segment · Predecessor · Service · Operating Segments

Statement Business Segments · Statement Scenario · Product Or Service · Consolidation Items

Source dimensions us-gaap:StatementBusinessSegmentsAxis=tdw:WestAfricaSegmentMember;us-gaap:StatementScenarioAxis=us-gaap:PredecessorMember;srt:ProductOrServiceAxis=us-gaap:ServiceMember;srt:ConsolidationItemsAxis=us-gaap:OperatingSegmentsMember
PeriodValueUnitFiledEvidence
2017-07-01 – 2017-07-3112397000 USD2018-11-13 · 17:28:12.000ZOpen filing evidence