Name:	rig_CommonStockParOrStatedValueApprovedPerShare
Namespace Prefix:	rig_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

Number of Deepwater Floaters. Deepwater Floaters are generally those other semisubmersible rigs and drillships capable of drilling in water depths between 4,500 feet and 7,500 feet.

No definition available.

Name:	rig_NumberOfDeepwaterFloaters
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of Harsh Environment Floaters. Harsh Environment Floaters are capable of drilling in harsh environments in water depths between 1,500 feet and 10,000 feet and have greater displacement, which offers larger variable load capacity, more usable deck space and better motion characteristics.

No definition available.

Name:	rig_NumberOfHarshEnvironmentFloaters
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of High-Specification Jackups. High-Specification Jackups are harsh environment and high-performance jackups. Jackups are self-elevating drilling platforms that have legs that can be lowered to the ocean floor to establish a foundation to support the drilling platform. These units are generally suited for water depths of 400 feet or less.

No definition available.

Name:	rig_NumberOfHighSpecificationJackups
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of High-Specification Jackups under construction.

No definition available.

Name:	rig_NumberOfHighSpecificationJackupsUnderConstruction
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of Midwater Floaters. Midwater Floaters are non-high-specification semisubmersibles with a water depth capacity of less than 4,500 feet.

No definition available.

Name:	rig_NumberOfMidwaterFloaters
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of mobile offshore drilling units we own, had partial ownership interests in or operated at the measurement date.

No definition available.

Name:	rig_NumberOfMobileOffshoreDrillingUnits
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

The total number of the entity's securities issued for the merging company's units.

No definition available.

Name:	rig_NumberOfSecuritiesIssued
Namespace Prefix:	rig_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

The total number of the entity's securities issued for the merging company's units.

No definition available.

Name:	rig_NumberOfSecuritiesIssuedForEachUnit
Namespace Prefix:	rig_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

Number of Ultra-Deepwater drillships under construction.

No definition available.

Name:	rig_NumberOfUltraDeepwaterDrillshipsUnderConstruction
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Number of Ultra-Deepwater Floaters. Ultra-Deepwater Floaters are equipped with high pressure mud pumps and are capable of drilling units in water depths of 7,500 feet or greater.

No definition available.

Name:	rig_NumberOfUltraDeepwaterFloaters
Namespace Prefix:	rig_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

Face amount or stated value per share of common stock.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.29)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 30
-Article 5