v2.4.0.8

Subsequent Events (Details) In Millions, unless otherwise specified | 1 Months Ended |  | 0 Months Ended
--- | --- | --- | ---
May 31, 2013 NOK | Jul. 31, 2014 Subsequent Event Petrobras Withholding Taxes USD ($) | Jul. 31, 2014 Subsequent Event Petrobras Withholding Taxes BRL | Jul. 16, 2014 Subsequent Event Norway Tax Assessments Prior to 2012 USD ($) item | Jul. 16, 2014 Subsequent Event Norway Tax Assessments Prior to 2012 NOK | Jul. 02, 2014 Subsequent Event Norway Tax Assessments Prior to 2012 subsidiary item
Subsequent events |  |  |  |  |  |
Financial claim dropped by the Norwegian authorities | 1,800 |  |  | $ 300 | 1,800 |
Number of subsidiaries against which notification of financial claim have been dropped |  |  |  | 2 | 2 |
Number of subsidiaries acquitted from all criminal charges related to the disclosures in Norwegian tax returns |  |  |  |  |  | 3
Number of external tax authorities acquitted from all criminal charges related to the disclosures in Norwegian tax returns |  |  |  |  |  | 2
Contingency related to 3rd party tax assessment |  | $ 128 | 283 |  |  |

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 number of external tax authorities acquitted from criminal charges. + References No definition available. + Details
Name: | rig_NumberOfExternalTaxAttorneysAcquittedFromCriminalCharges
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the number of external tax authorities acquitted from criminal charges. + References No definition available. + Details
Name: | rig_NumberOfSubsidiariesAcquittedFromCriminalCharges
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 financial claim have been dropped. + References No definition available. + Details
Name: | rig_NumberOfSubsidiariesAgainstWhichFinancialClaimHaveBeenDropped
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Reflects the estimated amount of loss from the specified contingency as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
Name: | us-gaap_LossContingencyEstimateOfPossibleLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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