XML 24 R25.htm IDEA: XBRL DOCUMENT
v3.20.1

Business (Details) | Mar. 31, 2020 item
--- | ---
Number of mobile offshore drilling units | 41
Ultra-deepwater floaters |
Number of mobile offshore drilling units | 28
Number of mobile offshore drilling units under construction | 2
Harsh environment floaters |
Number of mobile offshore drilling units | 12
Midwater floaters |
Number of mobile offshore drilling units | 1

X
- Definition Number of mobile offshore drilling units. + References No definition available. + Details
Name: | rig_NumberOfMobileOffshoreDrillingUnits
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of mobile offshore drilling units under construction we own, had partial ownership interests in or operated at the measurement date. + References No definition available. + Details
Name: | rig_NumberOfMobileOffshoreDrillingUnitsUnderConstruction
Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=rig_UltraDeepwaterFloatersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PropertyPlantAndEquipmentByTypeAxis=rig_HarshEnvironmentFloatersMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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