XML 56 R43.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Drilling Fleet (Impairment held and used) (Details) - Midwater floaters $ / shares in Units, $ in Millions | 9 Months Ended
--- | ---
Sep. 30, 2017 USD ($) $ / shares
Impairment of assets held and used |
Impairment of in use assets | $ 94
Loss associated with in use asset impairment, net of tax | $ 95
Loss associated with impairment, net of tax (per share) | $ / shares | $ 0.25

X
- Definition Represents the loss recognized for an asset classified as held and used, net of tax. + References No definition available. + Details
Name: | rig_LongLivedAssetsHeldAndUsedImpairmentChargeContinuingOperationsNetOfTax
Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition After tax earnings per share or per unit impact arising from asset impairment. + References No definition available. + Details
Name: | us-gaap_ImpairmentEffectOnEarningsPerShareAfterTax
Namespace Prefix: | us-gaap_
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 long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 220 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=114873921&loc=SL114875236-224282 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
Name: | us-gaap_ImpairmentOfLongLivedAssetsHeldForUse
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_ImpairedLongLivedAssetsHeldAndUsedByTypeAxis=rig_MidwaterFloaterAssetGroupMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |