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v2.4.1.9

Summary of Long-Term Debt Outstanding (Parenthetical) (Detail) | 12 Months Ended | 0 Months Ended
--- | --- | ---
Mar. 31, 2015 | May 27, 2015
4.61% July 2003 Senior Notes Due Fiscal 2016 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.61%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointSixOnePercentJulyTwoThousandThreeSeniorNotesDueFiscalTwoThousandSixteenMember |
Debt Instrument Maturity Period | Fiscal 2016 |
3.28% September 2010 Senior Notes Due Fiscal 2016 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 3.28%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_ThreePointTwoEightPercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandSixteenMember |
Debt Instrument Maturity Period | Fiscal 2016 |
3.90% September 2010 Senior Notes Due Fiscal 2018 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 3.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_ThreePointNineZeroPercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandEighteenMember |
Debt Instrument Maturity Period | Fiscal 2018 |
3.95% September 2010 Senior Notes Due Fiscal 2018 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 3.95%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_ThreePointNineFivePercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandEighteenMember |
Debt Instrument Maturity Period | Fiscal 2018 |
4.12% September 2010 Senior Notes Due Fiscal 2019 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.12%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointOneTwoPercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandNineteenMember |
Debt Instrument Maturity Period | Fiscal 2019 |
4.17% September 2010 Senior Notes Due Fiscal 2019 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.17%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointOneSevenPercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandNineteenMember |
Debt Instrument Maturity Period | Fiscal 2019 |
4.33% September 2010 Senior Notes Due Fiscal 2020 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.33%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointThreeThreePercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandTwentyMember |
Debt Instrument Maturity Period | Fiscal 2020 |
4.51% September 2010 Senior Notes Due Fiscal 2021 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.51%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointFiveOnePercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandTwentyOneMember |
Debt Instrument Maturity Period | Fiscal 2021 |
4.56% September 2010 Senior Notes Due Fiscal 2021 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.56%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointFiveSixPercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandTwentyOneMember |
Debt Instrument Maturity Period | Fiscal 2021 |
4.61% September 2010 Senior Notes Due Fiscal 2023 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.61%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointSixOnePercentSeptemberTwoThousandTenSeniorNotesDueFiscalTwoThousandTwentyThreeMember |
Debt Instrument Maturity Period | Fiscal 2023 |
4.06% August 2011 Senior Notes Due Fiscal 2019 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.06%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointZeroSixPercentAugustTwoThousandElevenSeniorNotesDueFiscalTwoThousandNineteenMember |
Debt Instrument Maturity Period | Fiscal 2019 |
4.54% August 2011 Senior Notes Due Fiscal 2022 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.54%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointFiveFourPercentAugustTwoThousandElevenSeniorNotesDueFiscalTwoThousandTwentyTwoMember |
Debt Instrument Maturity Period | Fiscal 2022 |
4.64% August 2011 Senior Notes Due Fiscal 2022 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.64%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointSixFourPercentAugustTwoThousandElevenSeniorNotesDueFiscalTwoThousandTwentyTwoMember |
Debt Instrument Maturity Period | Fiscal 2022 |
4.26% September 2013 senior notes due fiscal 2021 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 4.26%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FourPointTwoSixPercentSeptemberTwentyThirteenSeniorNotesDueFiscalTwentyTwentyOneMember |
Debt Instrument Maturity Period | Fiscal 2021 |
5.01% September 2013 senior notes due fiscal 2024 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 5.01%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FivePointZeroOnePercentSeptemberTwentyThirteenSeniorNotesDueFiscalTwentyTwentyFourMember |
Debt Instrument Maturity Period | Fiscal 2024 |
5.16% September 2013 senior notes due fiscal 2026 |  |
Debt [Line Items] |  |
Debt instrument interest rate | 5.16%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = tdw_FivePointOneSixPercentSeptemberTwentyThirteenSeniorNotesDueFiscalTwentyTwentySixMember |
Debt Instrument Maturity Period | Fiscal 2026 |
Norwegian Kroner Denominated Notes Due Fiscal Two Thousand Twenty Five |  |
Debt [Line Items] |  |
Debt Instrument Maturity Period | Fiscal 2025 |
Norwegian Kroner Denominated Notes Due Fiscal Two Thousand Twenty Six |  |
Debt [Line Items] |  |
Debt Instrument Maturity Period | Fiscal 2026 |
Norwegian Kroner Denominated Borrowing Agreement Due Fiscal Two Thousand Sixteen |  |
Debt [Line Items] |  |
Debt Instrument Maturity Period | Fiscal 2016 |
Norwegian Kroner Denominated Borrowing Agreement Due Fiscal Two Thousand Nineteen |  |
Debt [Line Items] |  |
Debt Instrument Maturity Period | Fiscal 2019 |
United States Dollar Denominated Borrowing Agreement Due Fiscal Two Thousand Twenty Seven |  |
Debt [Line Items] |  |
Debt Instrument Maturity Period | Fiscal 2027 |
Revolving Line Of Credit Due Fiscal Twenty Nineteen |  |
Debt [Line Items] |  |
Debt Instrument Maturity Period | Fiscal 2019 |
Subsequent Event | Term Loan and Revolving Credit Facility |  |
Debt [Line Items] |  |
Debt Instrument Maturity Period |  | Fiscal 2020

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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