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Business (Details) | 9 Months Ended
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Sep. 30, 2018 item
Number of mobile offshore drilling units | 41
Ultra-deepwater floaters |
Number of mobile offshore drilling units | 23
Number of mobile offshore drilling units under construction | 2
Harsh environment floaters |
Number of mobile offshore drilling units | 12
Number of mobile offshore drilling units under construction | 1
Deepwater floaters |
Number of mobile offshore drilling units | 2
Midwater floaters |
Number of mobile offshore drilling units | 4
High specification jackups | Assets sold, not discontinued operations |
Number of high specification jackups operated through contract completion or novation | 1

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- Definition Number of high specification jackups to be operated by the entity through completion or novation of the drilling contracts. + References No definition available. + Details
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- Definition Number of mobile offshore drilling units. + References No definition available. + Details
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Namespace Prefix: | rig_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- 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
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- Details
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- Details
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- Details
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- Details
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- Details
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- Details
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