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Guarantee Of Registered Securities (Condensed Consolidating Statements Of Income) (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Guarantor Obligations [Line Items]    
OPERATING REVENUES $ 1,163,900,000us-gaap_RevenueOilAndGasServices $ 1,066,700,000us-gaap_RevenueOilAndGasServices
Contract drilling (exclusive of depreciation) 518,300,000us-gaap_CostOfServicesOilAndGas 520,200,000us-gaap_CostOfServicesOilAndGas
Depreciation 137,100,000us-gaap_CostOfServicesDepreciation 131,100,000us-gaap_CostOfServicesDepreciation
General and administrative 30,100,000us-gaap_GeneralAndAdministrativeExpense 38,100,000us-gaap_GeneralAndAdministrativeExpense
OPERATING (LOSS) INCOME 478,400,000us-gaap_OperatingIncomeLoss 377,300,000us-gaap_OperatingIncomeLoss
OTHER INCOME (EXPENSE), NET (72,600,000)us-gaap_NonoperatingIncomeExpense (29,100,000)us-gaap_NonoperatingIncomeExpense
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 405,800,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments 348,200,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
INCOME TAX PROVISION 77,700,000us-gaap_IncomeTaxExpenseBenefit 49,500,000us-gaap_IncomeTaxExpenseBenefit
DISCONTINUED OPERATIONS, NET (200,000)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax (2,000,000)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
EQUITY EARNINGS IN AFFILIATES, NET OF TAX 0us-gaap_IncomeLossFromEquityMethodInvestments 0us-gaap_IncomeLossFromEquityMethodInvestments
NET INCOME 327,900,000us-gaap_ProfitLoss 296,700,000us-gaap_ProfitLoss
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS (3,200,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest (4,200,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
NET INCOME ATTRIBUTABLE TO ENSCO 324,700,000us-gaap_NetIncomeLoss 292,500,000us-gaap_NetIncomeLoss
Ensco Plc [Member]    
Guarantor Obligations [Line Items]    
OPERATING REVENUES 8,700,000us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
7,700,000us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
Contract drilling (exclusive of depreciation) 6,800,000us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
7,300,000us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
Depreciation 100,000us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
100,000us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
General and administrative 13,300,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
16,300,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
OPERATING (LOSS) INCOME (11,500,000)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
(16,000,000)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
OTHER INCOME (EXPENSE), NET (59,900,000)us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
(16,600,000)us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (71,400,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
(32,600,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
INCOME TAX PROVISION 0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
DISCONTINUED OPERATIONS, NET 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX 396,100,000us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
325,100,000us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
NET INCOME 324,700,000us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
292,500,000us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
NET INCOME ATTRIBUTABLE TO ENSCO 324,700,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
292,500,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoPlcMember
ENSCO International Inc. [Member]    
Guarantor Obligations [Line Items]    
OPERATING REVENUES 34,800,000us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
38,900,000us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
Contract drilling (exclusive of depreciation) 34,800,000us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
38,900,000us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
Depreciation 2,500,000us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
1,500,000us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
General and administrative 100,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
100,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
OPERATING (LOSS) INCOME (2,600,000)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
(1,600,000)us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
OTHER INCOME (EXPENSE), NET (16,800,000)us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
(4,000,000)us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (19,400,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
(5,600,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
INCOME TAX PROVISION 13,800,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
30,800,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
DISCONTINUED OPERATIONS, NET 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX 45,200,000us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
94,000,000us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
NET INCOME 12,000,000us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
57,600,000us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
NET INCOME ATTRIBUTABLE TO ENSCO 12,000,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
57,600,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_EnscoInternationalIncMember
Pride International, Inc. [Member]    
Guarantor Obligations [Line Items]    
OPERATING REVENUES 0us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
Contract drilling (exclusive of depreciation) 0us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
Depreciation 0us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
General and administrative 0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
OPERATING (LOSS) INCOME 0us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
OTHER INCOME (EXPENSE), NET (15,900,000)us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
(12,200,000)us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES (15,900,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
(12,200,000)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
INCOME TAX PROVISION 0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
DISCONTINUED OPERATIONS, NET 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX 63,900,000us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
(15,300,000)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
NET INCOME 48,000,000us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
(27,500,000)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
NET INCOME ATTRIBUTABLE TO ENSCO 48,000,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
(27,500,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_PrideInternationalIncMember
Other Non-Guarantor Subsidiaries Of Ensco [Member]    
Guarantor Obligations [Line Items]    
OPERATING REVENUES 1,191,600,000us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
1,099,600,000us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
Contract drilling (exclusive of depreciation) 547,900,000us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
553,500,000us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
Depreciation 134,500,000us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
129,500,000us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
General and administrative 16,700,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
21,700,000us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
OPERATING (LOSS) INCOME 492,500,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
394,900,000us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
OTHER INCOME (EXPENSE), NET 20,000,000us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
3,700,000us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 512,500,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
398,600,000us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
INCOME TAX PROVISION 63,900,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
18,700,000us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
DISCONTINUED OPERATIONS, NET (200,000)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
(2,000,000)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX 0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
0us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
NET INCOME 448,400,000us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
377,900,000us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS (3,200,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
(4,200,000)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
NET INCOME ATTRIBUTABLE TO ENSCO 445,200,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
373,700,000us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_OtherNonGuarantorSubsidiariesMember
Consolidating Adjustments [Member]    
Guarantor Obligations [Line Items]    
OPERATING REVENUES (71,200,000)us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
(79,500,000)us-gaap_RevenueOilAndGasServices
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
Contract drilling (exclusive of depreciation) (71,200,000)us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
(79,500,000)us-gaap_CostOfServicesOilAndGas
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
Depreciation 0us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_CostOfServicesDepreciation
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
General and administrative 0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_GeneralAndAdministrativeExpense
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
OPERATING (LOSS) INCOME 0us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_OperatingIncomeLoss
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
OTHER INCOME (EXPENSE), NET 0us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_NonoperatingIncomeExpense
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES 0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
INCOME TAX PROVISION 0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_IncomeTaxExpenseBenefit
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
DISCONTINUED OPERATIONS, NET 0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX (505,200,000)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
(403,800,000)us-gaap_IncomeLossFromEquityMethodInvestments
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
NET INCOME (505,200,000)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
(403,800,000)us-gaap_ProfitLoss
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS 0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
0us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
NET INCOME ATTRIBUTABLE TO ENSCO $ (505,200,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember
$ (403,800,000)us-gaap_NetIncomeLoss
/ dei_LegalEntityAxis
= esv_ConsolidatedAdjustmentsMember