v2.4.0.8

Impairments (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Property and equipment |  |  |  |
Impairment of certain corporate assets |  | $ 17 |  |
Impairment of goodwill and other indefinite Lived intangible assets |  |  |  |
Estimate of loss on impairment of goodwill per diluted share |  |  |  | $ 16.15
Estimated loss on impairment of goodwill, tax effect | 0 |  |  | 0
Adjustment to original estimate of goodwill | 118 |  | 118 | 5,200
Adjustment to original estimate of goodwill, per diluted share | $ 0.33 |  | $ 0.33 |
Adjustment to original estimate of goodwill, tax effect |  |  | 0 |
Assets Held for Sale |  |  |  |
Assets held for sale |  |  |  |
Aggregate loss on impairment of assets held for sale |  | 64 |  |
Aggregate loss on impairment of assets per diluted share |  | $ 0.17 |  |
Aggregate loss on impairment of assets held for sale, tax effect |  | $ 0 |  |

X
- Definition Represents the tax effect amount of an adjustment to a previously reported goodwill impairment charge, which will be recognized in the subsequent reporting period. + References No definition available. + Details
Name: | rig_GoodwillImpairedAdjustmentToInitialEstimateAmountTaxEffect
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The per diluted share amount of an adjustment to a previously reported goodwill impairment charge, which will be recognized in the subsequent reporting period. + References No definition available. + Details
Name: | rig_GoodwillImpairedAdjustmentToInitialEstimatePerDilutedShare
Namespace Prefix: | rig_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for goodwill per each share of dilutive common stock. + References No definition available. + Details
Name: | rig_GoodwillImpairmentLossPerDilutedShare
Namespace Prefix: | rig_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents the tax effect loss recognized during the period that results from the write-down of goodwill after comparing the implied fair value of reporting unit goodwill with the carrying amount of that goodwill. + References No definition available. + Details
Name: | rig_GoodwillImpairmentLossTaxEffect
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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

X
- Definition The amount of an adjustment to a previously reported goodwill impairment charge, which will be recognized in the subsequent reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13854-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 35 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=30907525&loc=d3e12323-109265 + Details
Name: | us-gaap_GoodwillImpairedAdjustmentToInitialEstimateAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391110&loc=d3e2921-110230 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 225 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=28367520&loc=d3e92212-112881 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Impairment -URI http://asc.fasb.org/extlink&oid=6515133 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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