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Does not include amounts allocated to cash and cash equivalents, marketable securities, receivables, inventory, and assets not to be used.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e falsefalseOther current assets6false0us-gaap_BusinessAcquisitionPurchasePriceAllocationOtherNoncurrentAssetsus-gaaptruedebitinstantNo definition 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goodwill.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph f falsefalseOther assets7false0us-gaap_BusinessAcquisitionPurchasePriceAllocationPropertyPlantAndEquipmentus-gaaptruedebitinstantNo definition 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Does not include amounts allocated to the current portion of long-term debt, accounts payable and accrued expenses.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e truefalseOther current liabilities13false0us-gaap_NoncashOrPartNoncashAcquisitionDebtAssumedus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse688748000688748000falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe amount of debt that an Entity assumes in acquiring a business or in consideration for an asset received in a noncash (or part noncash) acquisition. Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. 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Noncash is defined as transactions during a period that affect recognized assets or liabilities but that do not result in cash receipts or cash payments in the period. 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Financial Accounting Standard (FAS) -Number 141 -Paragraph 37 -Subparagraph g Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Emerging Issues Task Force (EITF) -Number 98-1 truefalseTotal liabilities assumed18false0us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaidus-gaaptruedebitinstantNo definition 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-Paragraph 68 -Subparagraph f(1) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d truefalseCash consideration paid19false0us-gaap_Revenuesus-gaaptruecreditdurationNo definition available.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:monetaryItemTypemonetaryAggregate revenue recognized during the period (derived from goods sold, services rendered, insurance premiums, or other activities that constitute an entity's earning process). For financial services companies, also includes investment and interest income, and sales and trading gains.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 falsefalseRevenues from external customers20false0us-gaap_CostsAndExpensesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse18910960001891096000falsefalsefalsefalsefalse10truefalsefalse16300400001630040000falsefalsefalsefalsefalse11truefalsefalse15380980001538098000falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15truefalsefalse9800000098000000falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryTotal costs of sales and operating expenses for the period.No authoritative reference available.falsefalseFrontier operating expenses21false0us-gaap_DebtAndCapitalLeaseObligationsus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13truefalsefalse691000000691000000falsefalsefalsetruefalse14truefalsefalse7200000072000000falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetarySum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.No authoritative reference available.falsefalseDebt, carrying value22false0us-gaap_VariableInterestEntityOwnershipPercentageus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsetruefalse00falsefalsefalsefalsefalse2falsetruefalse00falsefalsefalsefalsefalse3falsetruefalse00falsefalsefalsefalsefalse4falsetruefalse00falsefalsefalsefalsefalse5falsetruefalse00falsefalsefalsefalsefalse6falsetruefalse00falsefalsefalsefalsefalse7falsetruefalse00falsefalsefalsefalsefalse8falsetruefalse00falsefalsefalsefalsefalse9truetruefalse0.500.50falsefalsefalsefalsefalse10falsetruefalse00falsefalsefalsefalsefalse11falsetruefalse00falsefalsefalsefalsefalse12falsetruefalse00falsefalsefalsefalsefalse13falsetruefalse00falsefalsefalsetruefalse14falsetruefalse00falsefalsefalsetruefalse15falsetruefalse00falsefalsefalsetruefalse16truetruefalse0.500.50falsefalsefalsetruefalseOtherus-types:percentItemTypepurePercentage of the VIE's voting interest owned by the registrant. In general, a VIE is a corporation, partnership, trust, or any other legal structure used for business purposes that either (a) does not have equity investors with voting rights or (b) has equity investors that do not provide sufficient financial resources for the entity to support its activities. A VIE often holds financial assets, including loans or receivables, real estate or other property. A VIE may be essentially passive or it may engage in research and development or other activities on behalf of another company.No authoritative reference available.falsefalseFrontier's interest in two joint ventures23true0us-gaap_BusinessAcquisitionProFormaInformationAbstractus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringNo definition available.falsefalsePro forma financial information24false0us-gaap_BusinessAcquisitionProFormaRevenueus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse29854390002985439000falsefalsefalsefalsefalse10truefalsefalse39654570003965457000falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the periodReference 1: 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available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse716875000716875000falsefalsefalsefalsefalse10truefalsefalse16747220001674722000falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe pro forma net income (loss) for the period as if the business combination or combinations had been completed at the beginning of a periodReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph r(2, 3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 54 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 55 falsefalseNet income26false0us-gaap_BusinessAcquisitionProFormaEarningsPerShareBasicus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse2.802.80falsetruefalsefalsefalse10truefalsefalse6.406.40falsetruefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseEPSus-types:perShareItemTypedecimalThe pro forma basic net income per share for a period as if the business combination or combinations had been completed at the beginning of a periodReference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph r(2, 3) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 54 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 55 falsetrueNet income per share (Diluted)27true0ne_AcquisitionOfCompanyOneTextualsAbstractnefalsenadurationAcquisition of Company One.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:stringItemTypestringAcquisition of Company One.falsefalseAcquisition of FDR Holdings Limited (Textuals) [Abstract]28false0ne_NumberOfDynamicallyPositionedDrillshipsAcquirednefalsenainstantNumber of dynamically positioned drillships acquiredfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse33falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:positiveIntegerItemTypepositiveintegerNumber of dynamically positioned drillships acquiredNo authoritative reference available.falsefalseNumber of dynamically positioned drillships acquired29false0ne_NumberOfBullyClassDynamicallyPositionedDrillshipsAcquirednefalsenainstantNumber of Bully class dynamically positioned drillships acquiredfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse22falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse22falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse22falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:positiveIntegerItemTypepositiveintegerNumber of Bully class dynamically positioned drillships acquiredNo authoritative reference available.falsefalseNumber of Bully-class dynamically positioned joint venture-owned drillships under construction30false0ne_NumberOfConventionallyMooredDrillshipsAcquirednefalsenainstantNumber of conventionally moored drillships acquiredfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse22falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:positiveIntegerItemTypepositiveintegerNumber of conventionally moored drillships acquiredNo authoritative reference available.falsefalseNumber of conventionally moored drillships acquired31false0ne_NumberOfArcticClassConventionallyMooredDrillshipsAcquirednefalsenainstantNumber of Arctic class conventionally moored drillships acquiredfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse11falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:positiveIntegerItemTypepositiveintegerNumber of Arctic class conventionally moored drillships acquiredNo authoritative reference available.falsefalseNumber of Arctic class conventionally moored drillships acquired32false0ne_NumberOfConventionallyMooredDeepwaterSemisubmersibleDrillingRigsAcquirednefalsenainstantNumber of conventionally moored deepwater semisubmersible drilling rigs acquiredfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse11falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:positiveIntegerItemTypepositiveintegerNumber of conventionally moored deepwater semisubmersible drilling rigs acquiredNo authoritative reference available.falsefalseNumber of conventionally moored deepwater semisubmersible drilling rigs acquired33false0ne_NumberOfDynamicallyPositionedFloatingProductionStorageAndOffloadingVesselsAcquirednefalsenainstantNumber of dynamically positioned floating production, storage and offloading vessels acquiredfalsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse11falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:positiveIntegerItemTypepositiveintegerNumber of dynamically positioned floating production, storage and offloading vessels acquiredNo authoritative reference available.falsefalseNumber of dynamically positioned floating production, storage and offloading vessels acquired34false0us-gaap_BusinessAcquisitionCostOfAcquiredEntityPurchasePriceus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse17000000001700000000falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThe total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d falsefalsePurchase price paid with cash35false0us-gaap_BusinessAcquisitionCostOfAcquiredEntityCashPaidus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9falsefalsefalse00falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12truefalsefalse17070190001707019000falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of cash paid to acquire the entity.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 68 -Subparagraph f(1) Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph d falsefalseCash paid36false0us-gaap_AcquiredFiniteLivedIntangibleAssetWeightedAverageUsefulLifeus-gaaptruenadurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse3.03.0falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseOtherxbrli:decimalItemTypedecimalThe calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph a(3) falsefalseWeighted average life as of date of acquisition37false0us-gaap_BusinessCombinationAcquisitionRelatedCostsus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1900000019000000falsefalsefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryThis element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141R -Paragraph 59 falsefalseAcquisition-related costs for Frontier acquisition38false0us-gaap_PropertyPlantAndEquipmentNetus-gaaptruedebitinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse1004808700010048087000falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5truefalsefalse66344520006634452000falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse1004808700010048087000falsefalsefalsefalsefalse10truefalsefalse66344520006634452000falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryTangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, and production equipment.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 12 -Paragraph 5 -Subparagraph b, c Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 falsefalseCarrying amount of the drillships39false0us-gaap_CostsAndExpensesus-gaaptruedebitdurationNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1falsefalsefalse00falsefalsefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse18910960001891096000falsefalsefalsefalsefalse10truefalsefalse16300400001630040000falsefalsefalsefalsefalse11truefalsefalse15380980001538098000falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15truefalsefalse9800000098000000falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryTotal costs of sales and operating expenses for the period.No authoritative reference available.falsefalseFrontier operating expenses40false0us-gaap_DueToAffiliateCurrentAndNoncurrentus-gaaptruecreditinstantNo definition available.falsefalsefalsefalsefalsefalsefalsefalsefalsefalseverboselabel1truefalsefalse3600000036000000falsetruefalsefalsefalse2falsefalsefalse00falsefalsefalsefalsefalse3falsefalsefalse00falsefalsefalsefalsefalse4falsefalsefalse00falsefalsefalsefalsefalse5falsefalsefalse00falsefalsefalsefalsefalse6falsefalsefalse00falsefalsefalsefalsefalse7falsefalsefalse00falsefalsefalsefalsefalse8falsefalsefalse00falsefalsefalsefalsefalse9truefalsefalse3600000036000000falsetruefalsefalsefalse10falsefalsefalse00falsefalsefalsefalsefalse11falsefalsefalse00falsefalsefalsefalsefalse12falsefalsefalse00falsefalsefalsefalsefalse13falsefalsefalse00falsefalsefalsetruefalse14falsefalsefalse00falsefalsefalsetruefalse15falsefalsefalse00falsefalsefalsetruefalse16falsefalsefalse00falsefalsefalsetruefalseMonetaryxbrli:monetaryItemTypemonetaryAmount of payable due to an entity that is affiliated with the reporting entity by means of direct or indirect ownership.Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 15 -Subparagraph 3 -Article 9 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph k -Subparagraph 1 -Article 4 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 57 -Paragraph 2 -Subparagraph d Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 17 -Article 7 falsefalseThe company's share in joint venture partner loans1639Acquisition of FDR Holdings Limited (Details) (USD $)NoRoundingUnKnownNoRoundingUnKnowntruetrue