v2.4.0.8

Income Taxes (Details 2) In Millions, unless otherwise specified | 1 Months Ended | 6 Months Ended |  | 6 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
May 31, 2013 NOK subsidiary | Jun. 30, 2014 USD ($) subsidiary jurisdiction | Jun. 30, 2014 NOK subsidiary jurisdiction | Jun. 30, 2014 Minimum | Jun. 30, 2014 Maximum | Jun. 30, 2014 Norway Tax Assessments Prior to 2012 USD ($) advisor subsidiary | Jun. 30, 2014 Norway Tax Assessments Prior to 2012 NOK advisor subsidiary | Jun. 26, 2014 Norway Tax Assessments Prior to 2012 USD ($) | Jun. 26, 2014 Norway Tax Assessments Prior to 2012 NOK | Jun. 30, 2014 Norway Tax Assessments 2012 USD ($) advisor subsidiary | Jun. 30, 2014 Norway Tax Assessments 2012 NOK | Jun. 30, 2014 2010 and 2011 federal income tax returns USD ($) | Dec. 31, 2005 Brazil Tax Assessments 2000 Through 2004 USD ($) | Dec. 31, 2005 Brazil Tax Assessments 2000 Through 2004 BRL | 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 | 2 |  |  |  |  |  |  |  |  |  |  |  |  |
Maximum number of years agreed to extensions beyond the statute of limitations |  | 19 years | 19 years |  |  |  |  |  |  |  |  |  |  |  |  |
Net adjustments of additional taxes, excluding interest and penalties, related to assessments on 2010 and 2011 U.S. federal income tax returns |  |  |  |  |  |  |  |  |  |  |  | $ 290 |  |  |  |
Norway tax assessment due to migration of subsidiary, including interest |  |  |  |  |  | 114 | 684 |  |  |  |  |  |  |  |  |
Norway tax assessment due to 2001 dividend payment, including interest |  |  |  |  |  | 69 | 412 |  |  |  |  |  |  |  |  |
Norway tax assessment due to foreign exchange deductions and dividend withholding taxes, including interest |  |  |  |  |  | 7 | 43 |  |  |  |  |  |  |  |  |
Guarantee amount for tax assessment related to the migration of subsidiary |  |  |  |  |  | 117 | 699 |  |  |  |  |  |  |  |  |
Court ruling on tax assessment amount owed by affiliate |  |  |  |  |  |  |  | 69 | 412 |  |  |  |  |  |  |
Number of subsidiaries against which notification of criminal charges are issued |  |  |  |  |  | 2 | 2 |  |  | 2 | 2 |  |  |  |  |
Number of employees of former external advisors indicted |  |  |  |  |  | 2 | 2 |  |  | 2 | 2 |  |  |  |  |
Financial claim issued by the Norwegian authorities supplementing the criminal indictments |  |  |  |  |  |  |  |  |  | 300 | 1,800 |  |  |  |  |
Financial claim dropped by the Norwegian authorities | 1,800 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries against which notification of criminal charges are dropped | 1 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Criminal penalties to be assessed by court in addition to civil tax penalties |  | 38 | 230 |  |  |  |  |  |  |  |  |  |  |  |  |
Number of subsidiaries against which criminal penalties in addition to civil tax penalties will be assessed |  | 3 | 3 |  |  |  |  |  |  |  |  |  |  |  |  |
Brazil tax assessment for income tax returns |  |  |  |  |  |  |  |  |  |  |  |  | $ 315 | 694 | $ 55 | 121
Percentage of penalty and interest to be assessed by Brazil tax authorities |  |  |  |  |  |  |  |  |  |  |  |  | 75.00% | 75.00% | 75.00% | 75.00%

X
- Definition Represents the amount of guarantee provided by the entity with respect to the tax assessment related to the migration of a subsidiary. + References No definition available. + Details
Name: | rig_GuaranteeAmountForTaxAssessmentRelatedToTheMigrationOfSubsidiary
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the amount of criminal penalties to be assessed by the court in addition to civil tax penalties. + References No definition available. + Details
Name: | rig_IncomeTaxExaminationAmountOfCriminalPenaltiesToBeAssessedByCourtInAdditionToCivilTaxPenalties
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The estimated loss resulting from the income tax examination that has been accrued net of any adjustments as of the balance sheet date, excluding interest and penalties by the Brazilian taxing authorities. + References No definition available. + Details
Name: | rig_IncomeTaxExaminationLiabilityExcludingInterestAndPenaltiesRecordedBrazil
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Represents the amount of liability owed by subsidiary from court ruling. + References No definition available. + Details
Name: | rig_IncomeTaxExaminationLiabilityOwedBySubsidiaryFromCourtRuling
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The rate of penalty to be assessed by Brazilian tax authorities if entity's efforts to overturn tax assessment are unsuccessful. + References No definition available. + Details
Name: | rig_IncomeTaxExaminationPercentagePenaltiesAssessedBeforeExaminationBrazil
Namespace Prefix: | rig_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the financial claim dropped by the tax authorities against one of the entity's subsidiaries. + References No definition available. + Details
Name: | rig_IncomeTaxInvestigationFinancialClaimDropped
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Represents the financial claim issued by the Norwegian authorities supplementing the criminal indictments. + References No definition available. + Details
Name: | rig_IncomeTaxInvestigationFinancialClaimIssuedUnderCriminalIndictment
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- 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
Name: | rig_MaximumNumberYearsAgreedToExtensionsBeyondStatuteOfLimitations
Namespace Prefix: | rig_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of former external tax advisors, who issued indictments against the entity with respect to disclosures in the tax returns. + References No definition available. + Details
Name: | rig_NumberOfFormerExternalTaxAdvisorsIssuedIndictmentsAgainstEntity
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of jurisdictions with extensions beyond the statute of limitations. + References No definition available. + Details
Name: | rig_NumberOfMajorJurisdictionsWithExtensionsBeyondStatuteOfLimitations
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of subsidiaries of the entity against which criminal indictments charges are dropped. + References No definition available. + Details
Name: | rig_NumberOfSubsidiariesAgainstWhichCriminalIndictmentsHaveBeenDropped
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of subsidiaries of the entity against which criminal indictments charges are filed. + References No definition available. + Details
Name: | rig_NumberOfSubsidiariesAgainstWhichCriminalIndictmentsHaveBeenFiled
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of subsidiaries against which criminal penalties in addition to civil tax penalties will be assessed by the court. + References No definition available. + Details
Name: | rig_NumberOfSubsidiariesAgainstWhichCriminalPenaltiesInAdditionToCivilTaxPenaltiesAreToBeAssessed
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Range of period that the tax returns in the major jurisdictions in which the enterprise operates are generally subject to examination. + References No definition available. + Details
Name: | rig_RangeOfTaxReturnsSubjectToExamination
Namespace Prefix: | rig_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tax assessments by Norway on entity's actions involving dividend payment. + References No definition available. + Details
Name: | rig_TaxAssessmentDueTo2001DividendNorway
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax assessments by Norway on entity's actions involving certain foreign exchange deductions and dividend withholding taxes. + References No definition available. + Details
Name: | rig_TaxAssessmentDueToForeignExchangeNorway
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Tax assessments by Norway on entity's actions involving the migration of a subsidiary that was previously subject to tax in Norway. + References No definition available. + Details
Name: | rig_TaxAssessmentOnMigrationOfSubsidiaryNorway
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Details
Name: | rig_TaxReturnsAbstract
Namespace Prefix: | rig_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Estimated amount of loss resulting from an adverse tax position. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -Subparagraph (d)(3) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32718-109319 + Details
Name: | us-gaap_IncomeTaxExaminationEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration