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Income Taxes (Details 2) | 1 Months Ended | 3 Months Ended |  | 3 Months Ended |
--- | --- | --- | --- | --- | ---
May 31, 2013 NOK subsidiary | Mar. 31, 2015 USD ($) subsidiary jurisdiction | Mar. 31, 2015 NOK subsidiary jurisdiction | Dec. 31, 2005 USD ($) | Dec. 31, 2005 BRL | Mar. 31, 2015 Minimum | Mar. 31, 2015 Maximum | Mar. 31, 2015 Norway Tax Assessments Prior to 2012 USD ($) subsidiary advisor | Mar. 31, 2015 Norway Tax Assessments Prior to 2012 NOK subsidiary advisor | Mar. 31, 2015 Norway Tax Assessments 2012 USD ($) subsidiary advisor | Mar. 31, 2015 Norway Tax Assessments 2012 NOK | Mar. 31, 2015 2010 and 2011 federal income tax returns USD ($) | May 19, 2014 Brazil Tax Assessments 2009 And 2010 USD ($) | May 19, 2014 Brazil Tax Assessments 2009 And 2010 BRL
Income Tax Examination |  |  |  |  |  |  |  |  |  |  |  |  |  |
Range of tax returns are subject to examination |  |  |  |  |  | 3 years | 6 years |  |  |  |  |  |  |
Number of jurisdictions with extensions beyond statute of limitations |  | 2 rig_NumberOfMajorJurisdictionsWithExtensionsBeyondStatuteOfLimitations | 2 rig_NumberOfMajorJurisdictionsWithExtensionsBeyondStatuteOfLimitations |  |  |  |  |  |  |  |  |  |  |
Maximum number of years agreed to extensions beyond the statute of limitations |  | 20 years | 20 years |  |  |  |  |  |  |  |  |  |  |
Net adjustments of additional taxes, excluding interest and penalties, related to assessments on 2010 and 2011 U.S. federal income tax returns |  |  |  |  |  |  |  |  |  |  |  | $ 290,000,000 us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss / rig_IncomeTaxExaminationByPeriodAxis = rig_USFederalIncomeTaxAssessment2010And2011Member |  |
Norway tax assessment due to migration of subsidiary, including interest |  |  |  |  |  |  |  | 85,000,000 rig_TaxAssessmentOnMigrationOfSubsidiaryNorway / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member | 684,000,000 rig_TaxAssessmentOnMigrationOfSubsidiaryNorway / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member |  |  |  |  |
Norway tax assessment due to 2001 dividend payment, including interest |  |  |  |  |  |  |  | 51,000,000 rig_TaxAssessmentDueTo2001DividendNorway / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member | 412,000,000 rig_TaxAssessmentDueTo2001DividendNorway / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member |  |  |  |  |
Norway tax assessment due to foreign exchange deductions and dividend withholding taxes, including interest |  |  |  |  |  |  |  | 5,000,000 rig_TaxAssessmentDueToForeignExchangeNorway / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member | 43,000,000 rig_TaxAssessmentDueToForeignExchangeNorway / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member |  |  |  |  |
Number of subsidiaries against which notification of criminal charges are issued |  |  |  |  |  |  |  | 2 rig_NumberOfSubsidiariesAgainstWhichCriminalIndictmentsHaveBeenFiled / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member | 2 rig_NumberOfSubsidiariesAgainstWhichCriminalIndictmentsHaveBeenFiled / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member | 2 rig_NumberOfSubsidiariesAgainstWhichCriminalIndictmentsHaveBeenFiled / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessments2012Member | 2 rig_NumberOfSubsidiariesAgainstWhichCriminalIndictmentsHaveBeenFiled / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessments2012Member |  |  |
Number of employees of former external advisors indicted |  |  |  |  |  |  |  | 2 rig_NumberOfFormerExternalTaxAdvisorsIssuedIndictmentsAgainstEntity / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member | 2 rig_NumberOfFormerExternalTaxAdvisorsIssuedIndictmentsAgainstEntity / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessmentsPrior2012Member | 2 rig_NumberOfFormerExternalTaxAdvisorsIssuedIndictmentsAgainstEntity / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessments2012Member | 2 rig_NumberOfFormerExternalTaxAdvisorsIssuedIndictmentsAgainstEntity / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessments2012Member |  |  |
Financial claim issued by the Norwegian authorities supplementing the criminal indictments |  |  |  |  |  |  |  |  |  | 223,000,000 rig_IncomeTaxInvestigationFinancialClaimIssuedUnderCriminalIndictment / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessments2012Member | 1,800,000,000 rig_IncomeTaxInvestigationFinancialClaimIssuedUnderCriminalIndictment / rig_IncomeTaxExaminationByPeriodAxis = rig_NorwayTaxAssessments2012Member |  |  |
Financial claim dropped by the Norwegian authorities | 1,800,000,000 rig_IncomeTaxInvestigationFinancialClaimDropped |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries against which notification of criminal charges are dropped | 1 rig_NumberOfSubsidiariesAgainstWhichCriminalIndictmentsHaveBeenDropped |  |  |  |  |  |  |  |  |  |  |  |  |
Criminal penalties to be assessed by court in addition to civil tax penalties |  | 29,000,000 rig_IncomeTaxExaminationAmountOfCriminalPenaltiesToBeAssessedByCourtInAdditionToCivilTaxPenalties | 230,000,000 rig_IncomeTaxExaminationAmountOfCriminalPenaltiesToBeAssessedByCourtInAdditionToCivilTaxPenalties |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries against which criminal penalties in addition to civil tax penalties will be assessed |  | 3 rig_NumberOfSubsidiariesAgainstWhichCriminalPenaltiesInAdditionToCivilTaxPenaltiesAreToBeAssessed | 3 rig_NumberOfSubsidiariesAgainstWhichCriminalPenaltiesInAdditionToCivilTaxPenaltiesAreToBeAssessed |  |  |  |  |  |  |  |  |  |  |
Brazil tax assessment for income tax returns |  |  |  | $ 226,000,000 rig_IncomeTaxExaminationLiabilityExcludingInterestAndPenaltiesRecordedBrazil | 723,000,000 rig_IncomeTaxExaminationLiabilityExcludingInterestAndPenaltiesRecordedBrazil |  |  |  |  |  |  |  | $ 39,000,000 rig_IncomeTaxExaminationLiabilityExcludingInterestAndPenaltiesRecordedBrazil / rig_IncomeTaxExaminationByPeriodAxis = rig_BrazilTaxExaminationAssessmentsPeriod2009And2010Member | 126,000,000 rig_IncomeTaxExaminationLiabilityExcludingInterestAndPenaltiesRecordedBrazil / rig_IncomeTaxExaminationByPeriodAxis = rig_BrazilTaxExaminationAssessmentsPeriod2009And2010Member
Percentage of penalty and interest to be assessed by Brazil tax authorities |  |  |  | 75.00%rig_IncomeTaxExaminationPercentagePenaltiesAssessedBeforeExaminationBrazil | 75.00%rig_IncomeTaxExaminationPercentagePenaltiesAssessedBeforeExaminationBrazil |  |  |  |  |  |  |  | 75.00%rig_IncomeTaxExaminationPercentagePenaltiesAssessedBeforeExaminationBrazil / rig_IncomeTaxExaminationByPeriodAxis = rig_BrazilTaxExaminationAssessmentsPeriod2009And2010Member | 75.00%rig_IncomeTaxExaminationPercentagePenaltiesAssessedBeforeExaminationBrazil / rig_IncomeTaxExaminationByPeriodAxis = rig_BrazilTaxExaminationAssessmentsPeriod2009And2010Member

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- Definition Maximum number of years the enterprise has agreed to extensions beyond the statute of limitations in four major jurisdictions. + References No definition available. + Details
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