v2.4.0.8

Impairments (Details) (Assets Held for Sale, USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2014 | Jun. 30, 2013
Assets Held for Sale |  |  |
Assets held for sale |  |  |
Aggregate loss on impairment of assets held for sale | $ 37 | $ 65 | $ 37
Aggregate loss on impairment of assets per diluted share | $ 0.10 | $ 0.19 | $ 0.10
Aggregate loss on impairment of assets held for sale, tax effect | $ 0 | $ 0 | $ 0

X
- Definition Represents the tax effect of impairments recognized during the period for long-lived assets held in continuing operations for abandonment, exchange or sale. + References No definition available. + Details
Name: | rig_ImpairmentOfLongLivedAssetsToBeDisposedOfContinuingOperationsTaxEffect
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The loss recognized for any initial write-down from carrying value to fair value less cost to sell for an asset classified as held for sale in continuing operations. + References No definition available. + Details
Name: | rig_LongLivedAssetsHeldForSaleImpairmentChargeContinuingOperations
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The loss from impairment charge to continuing operations on assets per each share of dilutive common stock during the reporting period. + References No definition available. + Details
Name: | rig_LossOnImpairmentOfAssetPerDilutedShareContinuingOperations
Namespace Prefix: | rig_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

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