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v3.19.3.a.u2

Leases (Finance lease) (Details) | 12 Months Ended
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Dec. 31, 2019 USD ($)
Leases |
Implicit interest rate (as a percent) | 7.80%
Scheduled monthly payments under finance lease obligation | $ 6,000,000
End of lease obligation | 1
Recognized expense associated with amortization of right-of-use asset from finance lease | $ 21,000,000

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- Definition Amount due monthly under finance lease obligation. + References No definition available. + Details
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Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Represents the implicit interest rate under a finance lease contract. + References No definition available. + Details
Name: | rig_ImplicitInterestRate
Namespace Prefix: | rig_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Definition Finance lease lessee's amount due at end of lease. + References No definition available. + Details
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Namespace Prefix: | rig_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of amortization expense attributable to right-of-use asset from finance lease. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=77888399&loc=SL77918982-209971 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | us-gaap_LeasesAbstract
Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration