XML 16 R48.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Debt (Details) |  |  |  |  |  |  |  | 3 Months Ended | 0 Months Ended |  |  |  |  | 3 Months Ended |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 0 Months Ended |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 Months Ended | 0 Months Ended | 3 Months Ended |  | 3 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Mar. 31, 2015 4.95% Senior Notes due November 2015 USD ($) | Dec. 31, 2014 4.95% Senior Notes due November 2015 USD ($) | Mar. 31, 2015 5.05% Senior Notes due December 2016 USD ($) | Dec. 31, 2014 5.05% Senior Notes due December 2016 USD ($) | Dec. 31, 2011 5.05% Senior Notes due December 2016 USD ($) | Mar. 31, 2015 5.05% Senior Notes due December 2016 Forecast | Apr. 15, 2015 2.5% Senior Notes due October 2017 | Apr. 15, 2015 2.5% Senior Notes due October 2017 | Mar. 31, 2015 2.5% Senior Notes due October 2017 USD ($) | Dec. 31, 2014 2.5% Senior Notes due October 2017 USD ($) | Sep. 30, 2012 2.5% Senior Notes due October 2017 USD ($) | Mar. 31, 2015 Eksportfinans Loans due January 2018 USD ($) subsidiary | Mar. 31, 2015 Eksportfinans Loans due January 2018 NOK subsidiary | Dec. 31, 2014 Eksportfinans Loans due January 2018 USD ($) | Dec. 31, 2014 Eksportfinans Loans due January 2018 NOK | Mar. 31, 2015 6.00% Senior Notes due March 2018 USD ($) | Dec. 31, 2014 6.00% Senior Notes due March 2018 USD ($) | Mar. 31, 2015 7.375% Senior Notes due April 2018 USD ($) | Dec. 31, 2014 7.375% Senior Notes due April 2018 USD ($) | Mar. 31, 2015 6.50% Senior Notes due November 2020 USD ($) | Dec. 31, 2014 6.50% Senior Notes due November 2020 USD ($) | Mar. 31, 2015 6.375% Senior Notes due December 2021 USD ($) | Dec. 31, 2014 6.375% Senior Notes due December 2021 USD ($) | Dec. 31, 2011 6.375% Senior Notes due December 2021 USD ($) | Mar. 31, 2015 6.375% Senior Notes due December 2021 Forecast | Apr. 15, 2015 3.8% Senior Notes due October 2022 | Apr. 15, 2015 3.8% Senior Notes due October 2022 | Mar. 31, 2015 3.8% Senior Notes due October 2022 USD ($) | Dec. 31, 2014 3.8% Senior Notes due October 2022 USD ($) | Sep. 30, 2012 3.8% Senior Notes due October 2022 USD ($) | Mar. 31, 2015 7.45% Notes due April 2027 USD ($) | Dec. 31, 2014 7.45% Notes due April 2027 USD ($) | Mar. 31, 2015 8% Debentures due April 2027 USD ($) | Dec. 31, 2014 8% Debentures due April 2027 USD ($) | Mar. 31, 2015 7% Notes due June 2028 USD ($) | Dec. 31, 2014 7% Notes due June 2028 USD ($) | Mar. 31, 2015 Capital lease contract due August 2029 USD ($) | Dec. 31, 2014 Capital lease contract due August 2029 USD ($) | Mar. 31, 2015 7.5% Notes due April 2031 USD ($) | Dec. 31, 2014 7.5% Notes due April 2031 USD ($) | Mar. 31, 2015 6.80% Senior Notes due March 2038 USD ($) | Dec. 31, 2014 6.80% Senior Notes due March 2038 USD ($) | Mar. 31, 2015 7.35% Senior Notes due December 2041 USD ($) | Dec. 31, 2014 7.35% Senior Notes due December 2041 USD ($) | Dec. 31, 2011 7.35% Senior Notes due December 2041 USD ($) | Mar. 31, 2015 7.35% Senior Notes due December 2041 Forecast | Mar. 31, 2015 Five-Year Revolving Credit Facility USD ($) | Mar. 18, 2015 Five-Year Revolving Credit Facility | Mar. 31, 2015 Five-Year Revolving Credit Facility USD ($) | Mar. 31, 2015 Five-Year Revolving Credit Facility Base Rate | Mar. 31, 2015 Five-Year Revolving Credit Facility Minimum | Mar. 31, 2015 Five-Year Revolving Credit Facility Minimum Adjusted LIBOR | Mar. 31, 2015 Five-Year Revolving Credit Facility Maximum | Mar. 31, 2015 Five-Year Revolving Credit Facility Maximum Adjusted LIBOR | Mar. 31, 2015 Transocean Ltd. and Subsidiaries
Long-term debt by current and noncurrent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Total debt | $ 10,020,000,000 us-gaap_LongTermDebt | $ 10,092,000,000 us-gaap_LongTermDebt | $ 896,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue4.95PercentNovember2015Member | $ 898,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue4.95PercentNovember2015Member | $ 1,000,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue5.05PercentDecember2016Member | $ 999,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue5.05PercentDecember2016Member |  |  |  |  | $ 749,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue2.5PercentOctober2017Member | $ 748,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue2.5PercentOctober2017Member |  | $ 288,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member |  | $ 369,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member |  | $ 1,004,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6PercentMarch2018Member | $ 1,001,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6PercentMarch2018Member | $ 247,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.375PercentApril2018Member | $ 247,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.375PercentApril2018Member | $ 921,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.50PercentNovember2020Member | $ 911,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.50PercentNovember2020Member | $ 1,199,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.375PercentDecember2021Member | $ 1,199,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.375PercentDecember2021Member |  |  |  |  | $ 746,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue3.8PercentOctober2022Member | $ 745,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue3.8PercentOctober2022Member |  | $ 97,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_NotesDue7.45PercentApril2027Member | $ 97,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_NotesDue7.45PercentApril2027Member | $ 57,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_DebenturesDue8PercentApril2027Member | $ 57,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_DebenturesDue8PercentApril2027Member | $ 309,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7PercentJune2028Member | $ 309,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7PercentJune2028Member | $ 609,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_CapitalLeaseContractDueAugust2029Member | $ 615,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_CapitalLeaseContractDueAugust2029Member | $ 599,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_NotesDue7.5PercentApril2031Member | $ 598,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_NotesDue7.5PercentApril2031Member | $ 999,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.80PercentMarch2038Member | $ 999,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.80PercentMarch2038Member | $ 300,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.35PercentDecember2041Member | $ 300,000,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.35PercentDecember2041Member |  |  |  |  |  |  |  |  |  |  |
Debt due within one year | 1,024,000,000 us-gaap_LongTermDebtCurrent | 1,033,000,000 us-gaap_LongTermDebtCurrent | 896,000,000 us-gaap_LongTermDebtCurrent / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue4.95PercentNovember2015Member | 898,000,000 us-gaap_LongTermDebtCurrent / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue4.95PercentNovember2015Member |  |  |  |  |  |  |  |  |  | 106,000,000 us-gaap_LongTermDebtCurrent / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member |  | 114,000,000 us-gaap_LongTermDebtCurrent / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 22,000,000 us-gaap_LongTermDebtCurrent / us-gaap_DebtInstrumentAxis = rig_CapitalLeaseContractDueAugust2029Member | 21,000,000 us-gaap_LongTermDebtCurrent / us-gaap_DebtInstrumentAxis = rig_CapitalLeaseContractDueAugust2029Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Long-term debt | 8,996,000,000 us-gaap_LongTermDebtNoncurrent | 9,059,000,000 us-gaap_LongTermDebtNoncurrent |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Debt instrument interest rate stated percentage |  |  | 4.95%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue4.95PercentNovember2015Member |  | 5.05%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue5.05PercentDecember2016Member |  |  | 5.55%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue5.05PercentDecember2016Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |  | 3.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue2.5PercentOctober2017Member | 2.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue2.5PercentOctober2017Member |  |  |  |  |  |  | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6PercentMarch2018Member |  | 7.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.375PercentApril2018Member |  | 6.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.50PercentNovember2020Member |  | 6.375%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.375PercentDecember2021Member |  |  | 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.375PercentDecember2021Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |  | 4.30%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue3.8PercentOctober2022Member | 3.80%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue3.8PercentOctober2022Member |  |  | 7.45%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_NotesDue7.45PercentApril2027Member |  | 8.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_DebenturesDue8PercentApril2027Member |  | 7.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7PercentJune2028Member |  |  |  | 7.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_NotesDue7.5PercentApril2031Member |  | 6.80%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.80PercentMarch2038Member |  | 7.35%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.35PercentDecember2041Member |  |  | 7.85%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.35PercentDecember2041Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |  |  |  |  |  |  |  |  |
Percentage ownership interest in Transocean Inc. by Transocean Ltd. |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100.00%us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions / dei_LegalEntityAxis = rig_TransoceanLtdAndSubsidiariesMember
Credit facility term |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 5 years |  |  |  |  |  |
Borrowing capacity, maximum |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  | 3,000,000,000 us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |
Debt instrument face value |  |  |  |  |  |  | 1,000,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue5.05PercentDecember2016Member |  |  |  |  |  | 750,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue2.5PercentOctober2017Member |  |  |  |  |  |  |  |  |  |  |  |  | 1,200,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.375PercentDecember2021Member |  |  |  |  |  | 750,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue3.8PercentOctober2022Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 us-gaap_DebtInstrumentFaceAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.35PercentDecember2041Member |  |  |  |  |  |  |  |  |  |
Spread on variable rate basis (as a percent) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember | 1.50%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  | 1.125%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember / us-gaap_VariableRateAxis = rig_AdjustedLIBORMember |  | 2.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember / us-gaap_VariableRateAxis = rig_AdjustedLIBORMember |
Percentage reduction to the calculated variable rate |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 1.00%rig_DebtInstrumentReductionToCalculatedVariableRatePercentage / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_VariableRateAxis = us-gaap_BaseRateMember |  |  |  |  |
Commitment fee percentage at period end |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.275%us-gaap_LineOfCreditFacilityCommitmentFeePercentage / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember | 0.225%us-gaap_LineOfCreditFacilityCommitmentFeePercentage / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  |  | 0.15%us-gaap_LineOfCreditFacilityCommitmentFeePercentage / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  | 0.35%us-gaap_LineOfCreditFacilityCommitmentFeePercentage / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Interest rate increase |  |  |  |  |  |  |  | 0.50%us-gaap_DebtInstrumentInterestRateIncreaseDecrease / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue5.05PercentDecember2016Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 0.50%us-gaap_DebtInstrumentInterestRateIncreaseDecrease / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue2.5PercentOctober2017Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50%us-gaap_DebtInstrumentInterestRateIncreaseDecrease / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.375PercentDecember2021Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember | 0.50%us-gaap_DebtInstrumentInterestRateIncreaseDecrease / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue3.8PercentOctober2022Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.50%us-gaap_DebtInstrumentInterestRateIncreaseDecrease / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.35PercentDecember2041Member / us-gaap_StatementScenarioAxis = us-gaap_ScenarioForecastMember |  |  |  |  |  |  |  |  |
Debt to tangible capitalization ratio |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0.6 rig_DebtInstrumentCovenantDebtToTangibleCapitalizationRatio / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MinimumMember |  | 1.0 rig_DebtInstrumentCovenantDebtToTangibleCapitalizationRatio / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember / us-gaap_RangeAxis = us-gaap_MaximumMember |  |
Credit facility amount outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_LineOfCreditFacilityAmountOutstanding / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  | 0 us-gaap_LineOfCreditFacilityAmountOutstanding / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |
Credit facility available borrowing capacity |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000,000,000 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  | 3,000,000,000 us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |
Letters of credit issued and outstanding |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  | 0 us-gaap_LettersOfCreditOutstandingAmount / us-gaap_DebtInstrumentAxis = us-gaap_RevolvingCreditFacilityMember |  |  |  |  |  |
Aggregate principal amount outstanding | 9,996,000,000 us-gaap_DebtInstrumentCarryingAmount |  |  |  | 1,000,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue5.05PercentDecember2016Member |  |  |  |  |  | 750,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue2.5PercentOctober2017Member |  |  | 290,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member | 2,300,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member | 370,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member | 2,800,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member |  |  |  |  |  |  | 1,200,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue6.375PercentDecember2021Member |  |  |  |  |  | 750,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue3.8PercentOctober2022Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 300,000,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_DebtInstrumentAxis = rig_SeniorNotesDue7.35PercentDecember2041Member |  |  |  |  |  |  |  |  |  |  |  |
Number of wholly-owned subsidiaries which are obligors to debt instrument |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 rig_DebtInstrumentNumberOfWhollyOwnedSubsidiariesAsObligorsToDebt / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member | 1 rig_DebtInstrumentNumberOfWhollyOwnedSubsidiariesAsObligorsToDebt / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Restricted investments used as security for debt instruments |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 290,000,000 us-gaap_RestrictedInvestments / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member | 2,300,000,000 us-gaap_RestrictedInvestments / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member | $ 370,000,000 us-gaap_RestrictedInvestments / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member | 2,800,000,000 us-gaap_RestrictedInvestments / us-gaap_DebtInstrumentAxis = rig_EksportfinansNotesDue2018Member |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |

X
- Definition Represents the maximum debt to tangible capitalization ratio. + References No definition available. + Details
Name: | rig_DebtInstrumentCovenantDebtToTangibleCapitalizationRatio
Namespace Prefix: | rig_
Data Type: | xbrli:pureItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of wholly-owned subsidiaries which are obligors to debt instrument. + References No definition available. + Details
Name: | rig_DebtInstrumentNumberOfWhollyOwnedSubsidiariesAsObligorsToDebt
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The percentage reduction to the calculated variable rate. + References No definition available. + Details
Name: | rig_DebtInstrumentReductionToCalculatedVariableRatePercentage
Namespace Prefix: | rig_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentBasisSpreadOnVariableRate1
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 3: 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
Name: | us-gaap_DebtInstrumentCarryingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
Name: | us-gaap_DebtInstrumentFaceAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Incremental percentage increase (decrease) in the stated rate on a debt instrument. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentInterestRateIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
Name: | us-gaap_DebtInstrumentTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
Name: | us-gaap_LettersOfCreditOutstandingAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Amount borrowed under the credit facility as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityAmountOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
Name: | us-gaap_LineOfCreditFacilityCommitmentFeePercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityCurrentBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19, 22 -Article 5 + Details
Name: | us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
Name: | us-gaap_LongTermDebt
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | us-gaap_LongTermDebtByCurrentAndNoncurrentAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of long-term debt, after unamortized discount or premium, scheduled to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19,20) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 19 -Article 5 + Details
Name: | us-gaap_LongTermDebtCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying amount of long-term debt, net of unamortized discount or premium, excluding amounts to be repaid within one year or the normal operating cycle, if longer (current maturities). Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + 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) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermDebtNoncurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Investments which are not defined as or included in marketable (debt, equity, or other) securities whose use is restricted in whole or in part, generally by contractual agreements or regulatory requirements. For use in an unclassified balance sheet. + References No definition available. + Details
Name: | us-gaap_RestrictedInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Percentage of subsidiary's or equity method investee's stock owned by parent immediately after all stock transactions. + References No definition available. + Details
Name: | us-gaap_SubsidiaryOrEquityMethodInvesteeCumulativePercentageOwnershipAfterAllTransactions
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration