XML 95 R64.htm IDEA: XBRL DOCUMENT v2.4.1.9
Income Taxes (Narrative) (Details) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2014
jackup
Dec. 31, 2013
jackup
Dec. 31, 2012
jackup
Income Tax Expense (Benefit), Discrete Item             $ 18,400,000esv_IncomeTaxExpenseBenefitDiscreteItem    
Income from continuing operations before income taxes in the U.S. countries             (460,300,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 173,400,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic 101,100,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesDomestic
Income from continuing operations before income taxes in the non-U.S. countries             (2,088,500,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 1,500,000,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign 1,203,600,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesForeign
Deferred tax assets related to U.S. foreign tax credits 159,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign   98,600,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign       98,600,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign 159,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsForeign  
Deferred tax assets related to net operating loss carryforwards 104,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards   204,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards       204,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards 104,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwards  
Net operating loss carryforwards     814,500,000us-gaap_OperatingLossCarryforwards       814,500,000us-gaap_OperatingLossCarryforwards    
Operating loss carryforwards, Not subject to expiration     459,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration       459,500,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsNotSubjectToExpiration    
Operating loss carryforwards, Subject to expiration     355,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration       355,000,000us-gaap_DeferredTaxAssetsOperatingLossCarryforwardsSubjectToExpiration    
Valuation allowance on NOL carryforwards and FTC     267,500,000esv_ValuationAllowanceOnNolCarryforwardsAndFtcDueToUncertaintyOfRealization       267,500,000esv_ValuationAllowanceOnNolCarryforwardsAndFtcDueToUncertaintyOfRealization    
Proceeds from Income Tax Refunds             9,600,000us-gaap_LitigationSettlementAmount    
Valuation Allowance, Deferred Tax Asset, Change in Amount 7,000,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount           41,400,000us-gaap_ValuationAllowanceDeferredTaxAssetChangeInAmount    
Asset Impairment Charges     3,515,200,000us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges 703,500,000us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges 4,218,700,000us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges 0us-gaap_AssetImpairmentCharges
Consilidated effective income tax rate excluding discrete items             10.70%esv_EffectiveIncomeTaxRateContinuingOperationsExcludingDiscreteItems 12.20%esv_EffectiveIncomeTaxRateContinuingOperationsExcludingDiscreteItems 12.40%esv_EffectiveIncomeTaxRateContinuingOperationsExcludingDiscreteItems
Restructuring Charges, Tax                 51,200,000esv_RestructuringChargesTax
Minimum percentage threshold for recognition of tax benefits             50.00%esv_PercentRequiredForRecognitionOfTaxBenefitAmounts    
Total unrecognized tax benefits 151,700,000us-gaap_UnrecognizedTaxBenefits 110,700,000us-gaap_UnrecognizedTaxBenefits 134,400,000us-gaap_UnrecognizedTaxBenefits       134,400,000us-gaap_UnrecognizedTaxBenefits 151,700,000us-gaap_UnrecognizedTaxBenefits 110,700,000us-gaap_UnrecognizedTaxBenefits
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions With Net Operating Loss Carryforwards             18,500,000esv_UnrecognizedTaxBenefitsIncreaseResultingfromPriorPeriodTaxPositionsWithNetOperatingLossCarryforwards 21,000,000esv_UnrecognizedTaxBenefitsIncreaseResultingfromPriorPeriodTaxPositionsWithNetOperatingLossCarryforwards  
Amount of unrecognized tax benefits affecting the consolidated effective income tax rate if recognized     110,400,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate       110,400,000us-gaap_UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate    
Amount of accrued interest and penalties included in other liabilities 17,300,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued   26,500,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued       26,500,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued 17,300,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued  
Amount of interest and penalties recognized in net tax expense             (9,200,000)us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense 1,600,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense 2,800,000us-gaap_UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
Income tax benefits, inclusive of interest and penalties due to lapses in statute of limitations 3,100,000esv_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedDueToLapsesInStatuteOfLimitations 28,600,000esv_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedDueToLapsesInStatuteOfLimitations 2,400,000esv_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedDueToLapsesInStatuteOfLimitations       2,400,000esv_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedDueToLapsesInStatuteOfLimitations 3,100,000esv_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedDueToLapsesInStatuteOfLimitations 28,600,000esv_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccruedDueToLapsesInStatuteOfLimitations
Decline in unrecognized tax benefits during next twelve months     9,600,000us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit       9,600,000us-gaap_SignificantChangeInUnrecognizedTaxBenefitsIsReasonablyPossibleAmountOfUnrecordedBenefit    
Accrued interest and penalty assessments related to the decline in unrecognized tax benefits     2,800,000us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued       2,800,000us-gaap_IncomeTaxExaminationPenaltiesAndInterestAccrued    
Number of assets transferred (in drillships or jackups)             3esv_NumberOfAssetsTransferred 2esv_NumberOfAssetsTransferred 1esv_NumberOfAssetsTransferred
Income tax liability from gain on intercompany transfers   1,700,000esv_IncomeTaxLiabilityTransfersToSubsidiaryGains 0esv_IncomeTaxLiabilityTransfersToSubsidiaryGains       0esv_IncomeTaxLiabilityTransfersToSubsidiaryGains   1,700,000esv_IncomeTaxLiabilityTransfersToSubsidiaryGains
Remaining useful life of drilling rigs associated with amortization of deferred income tax expense, minimum years             15 years    
Unamortized deferred charges related to intercompany transfers 50,200,000esv_UnamortizedDeferredChargesTransfersToSubsidiary   39,700,000esv_UnamortizedDeferredChargesTransfersToSubsidiary       39,700,000esv_UnamortizedDeferredChargesTransfersToSubsidiary 50,200,000esv_UnamortizedDeferredChargesTransfersToSubsidiary  
Amount included in current income taxes for amortization of deferred income taxes related to intercompany transfers             2,600,000us-gaap_AmortizationOfDeferredCharges 4,100,000us-gaap_AmortizationOfDeferredCharges 9,100,000us-gaap_AmortizationOfDeferredCharges
Deferred tax liability related to temporary difference from transferred drilling rigs 29,200,000esv_DeferredTaxLiabilityRelatedToTemporaryDifferenceFromTransferredDrillingRigs   23,000,000esv_DeferredTaxLiabilityRelatedToTemporaryDifferenceFromTransferredDrillingRigs       23,000,000esv_DeferredTaxLiabilityRelatedToTemporaryDifferenceFromTransferredDrillingRigs 29,200,000esv_DeferredTaxLiabilityRelatedToTemporaryDifferenceFromTransferredDrillingRigs  
Tax benefits included in deferred income tax expense related to amortization of deferred reversing temporary differences from intercompany transfers             4,800,000esv_DeferredTaxExpenseBenefitAmortizationOfDeferredCharges 1,900,000esv_DeferredTaxExpenseBenefitAmortizationOfDeferredCharges 3,400,000esv_DeferredTaxExpenseBenefitAmortizationOfDeferredCharges
Aggregate Indefinitely reinvested undistributed subsidiary earnings.   530,000,000esv_IndefinitelyReinvestedUndistributedSubsidiaryEarnings              
Undistributed Earnings of Foreign Subsidiaries 2,100,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries   2,300,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries       2,300,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries 2,100,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries  
Other Liabilities [Member]                  
Total unrecognized tax benefits 130,700,000us-gaap_UnrecognizedTaxBenefits
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember		   115,900,000us-gaap_UnrecognizedTaxBenefits
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember		       115,900,000us-gaap_UnrecognizedTaxBenefits
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember		 130,700,000us-gaap_UnrecognizedTaxBenefits
/ us-gaap_BalanceSheetLocationAxis
= us-gaap_OtherLiabilitiesMember		  
Minimum [Member]                  
Deferred Tax Assets, Foreign, Expiration Date             2017    
Operating loss carryforwards tax credits expiration year             2015    
Maximum [Member]                  
Deferred Tax Assets, Foreign, Expiration Date             2023    
Operating loss carryforwards tax credits expiration year             2020    
Mexican Tax Authority [Member]                  
Deferred Tax Liabilities, Gross               7,400,000esv_Discretetaxexpense
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_MexicanTaxAuthorityMember		  
Proceeds from Income Tax Refunds               30,600,000us-gaap_LitigationSettlementAmount
/ us-gaap_IncomeTaxAuthorityAxis
= us-gaap_MexicanTaxAuthorityMember		  
Rig Impairments [Member]                  
Income Tax Expense (Benefit), Discrete Item             $ 16,400,000esv_IncomeTaxExpenseBenefitDiscreteItem
/ esv_ImpairmentofLongLivedAssetsAxis
= esv_RigImpairmentsMember