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v2.4.1.9

Guarantee Of Registered Securities (Condensed Consolidating Statements Of Income) (Details) (USD $) In Millions, unless otherwise specified | 3 Months Ended | 12 Months Ended
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Dec. 31, 2014 | Sep. 30, 2014 | Jun. 30, 2014 | Mar. 31, 2014 | Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Guarantor Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES | $ 1,159.8 us-gaap_RevenueOilAndGasServices | $ 1,201.4 us-gaap_RevenueOilAndGasServices | $ 1,136.6 us-gaap_RevenueOilAndGasServices | $ 1,066.7 us-gaap_RevenueOilAndGasServices | $ 1,138.0 us-gaap_RevenueOilAndGasServices | $ 1,119.9 us-gaap_RevenueOilAndGasServices | $ 1,076.1 us-gaap_RevenueOilAndGasServices | $ 989.4 us-gaap_RevenueOilAndGasServices | $ 4,564.5 us-gaap_RevenueOilAndGasServices | $ 4,323.4 us-gaap_RevenueOilAndGasServices | $ 3,638.8 us-gaap_RevenueOilAndGasServices
Contract drilling (exclusive of depreciation) | 514.0 us-gaap_CostOfServicesOilAndGas | 500.2 us-gaap_CostOfServicesOilAndGas | 542.5 us-gaap_CostOfServicesOilAndGas | 520.2 us-gaap_CostOfServicesOilAndGas | 500.4 us-gaap_CostOfServicesOilAndGas | 499.2 us-gaap_CostOfServicesOilAndGas | 496.1 us-gaap_CostOfServicesOilAndGas | 451.4 us-gaap_CostOfServicesOilAndGas | 2,076.9 us-gaap_CostOfServicesOilAndGas | 1,947.1 us-gaap_CostOfServicesOilAndGas | 1,642.8 us-gaap_CostOfServicesOilAndGas
Asset Impairment Charges | 3,515.2 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges | 703.5 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges |  |  |  |  | 4,218.7 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges | 0 us-gaap_AssetImpairmentCharges
Depreciation | 139.4 us-gaap_CostOfServicesDepreciation | 135.2 us-gaap_CostOfServicesDepreciation | 132.2 us-gaap_CostOfServicesDepreciation | 131.1 us-gaap_CostOfServicesDepreciation | 127.5 us-gaap_CostOfServicesDepreciation | 124.7 us-gaap_CostOfServicesDepreciation | 124.0 us-gaap_CostOfServicesDepreciation | 120.0 us-gaap_CostOfServicesDepreciation | 537.9 us-gaap_CostOfServicesDepreciation | 496.2 us-gaap_CostOfServicesDepreciation | 443.8 us-gaap_CostOfServicesDepreciation
General and administrative | 28.3 us-gaap_GeneralAndAdministrativeExpense | 29.3 us-gaap_GeneralAndAdministrativeExpense | 36.2 us-gaap_GeneralAndAdministrativeExpense | 38.1 us-gaap_GeneralAndAdministrativeExpense | 35.2 us-gaap_GeneralAndAdministrativeExpense | 37.4 us-gaap_GeneralAndAdministrativeExpense | 36.4 us-gaap_GeneralAndAdministrativeExpense | 37.8 us-gaap_GeneralAndAdministrativeExpense | 131.9 us-gaap_GeneralAndAdministrativeExpense | 146.8 us-gaap_GeneralAndAdministrativeExpense | 148.9 us-gaap_GeneralAndAdministrativeExpense
OPERATING INCOME | (3,037.1)us-gaap_OperatingIncomeLoss | 536.7 us-gaap_OperatingIncomeLoss | (277.8)us-gaap_OperatingIncomeLoss | 377.3 us-gaap_OperatingIncomeLoss | 474.9 us-gaap_OperatingIncomeLoss | 458.6 us-gaap_OperatingIncomeLoss | 419.6 us-gaap_OperatingIncomeLoss | 380.2 us-gaap_OperatingIncomeLoss | (2,400.9)us-gaap_OperatingIncomeLoss | 1,733.3 us-gaap_OperatingIncomeLoss | 1,403.3 us-gaap_OperatingIncomeLoss
OTHER (EXPENSE) INCOME, NET | (49.6)us-gaap_NonoperatingIncomeExpense | (38.4)us-gaap_NonoperatingIncomeExpense | (30.8)us-gaap_NonoperatingIncomeExpense | (29.1)us-gaap_NonoperatingIncomeExpense | (28.9)us-gaap_NonoperatingIncomeExpense | (1.6)us-gaap_NonoperatingIncomeExpense | (39.8)us-gaap_NonoperatingIncomeExpense | (29.8)us-gaap_NonoperatingIncomeExpense | (147.9)us-gaap_NonoperatingIncomeExpense | (100.1)us-gaap_NonoperatingIncomeExpense | (98.6)us-gaap_NonoperatingIncomeExpense
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES | (3,086.7)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 498.3 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (308.6)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 348.2 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 446.0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 457.0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 379.8 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 350.4 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | (2,548.8)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 1,633.2 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments | 1,304.7 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Total provision for income taxes | (26.2)us-gaap_IncomeTaxExpenseBenefit | 74.6 us-gaap_IncomeTaxExpenseBenefit | 42.6 us-gaap_IncomeTaxExpenseBenefit | 49.5 us-gaap_IncomeTaxExpenseBenefit | 44.6 us-gaap_IncomeTaxExpenseBenefit | 67.5 us-gaap_IncomeTaxExpenseBenefit | 43.2 us-gaap_IncomeTaxExpenseBenefit | 47.8 us-gaap_IncomeTaxExpenseBenefit | 140.5 us-gaap_IncomeTaxExpenseBenefit | 203.1 us-gaap_IncomeTaxExpenseBenefit | 228.6 us-gaap_IncomeTaxExpenseBenefit
DISCONTINUED OPERATIONS, NET | (388.0)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 9.2 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (818.4)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (2.0)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (37.4)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (8.1)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 26.0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 17.3 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (1,199.2)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | (2.2)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax | 100.6 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
EQUITY EARNINGS IN AFFILIATES, NET OF TAX |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromEquityMethodInvestments | 0 us-gaap_IncomeLossFromEquityMethodInvestments | 0 us-gaap_IncomeLossFromEquityMethodInvestments
NET INCOME | (3,448.5)us-gaap_ProfitLoss | 432.9 us-gaap_ProfitLoss | (1,169.6)us-gaap_ProfitLoss | 296.7 us-gaap_ProfitLoss | 364.0 us-gaap_ProfitLoss | 381.4 us-gaap_ProfitLoss | 362.6 us-gaap_ProfitLoss | 319.9 us-gaap_ProfitLoss | (3,888.5)us-gaap_ProfitLoss | 1,427.9 us-gaap_ProfitLoss | 1,176.7 us-gaap_ProfitLoss
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS | (3.3)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (3.5)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (3.1)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (4.2)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (2.6)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (2.6)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (1.7)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (2.8)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (14.1)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (9.7)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest | (7.0)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest
NET INCOME ATTRIBUTABLE TO ENSCO | (3,451.8)us-gaap_NetIncomeLoss | 429.4 us-gaap_NetIncomeLoss | (1,172.7)us-gaap_NetIncomeLoss | 292.5 us-gaap_NetIncomeLoss | 361.4 us-gaap_NetIncomeLoss | 378.8 us-gaap_NetIncomeLoss | 360.9 us-gaap_NetIncomeLoss | 317.1 us-gaap_NetIncomeLoss | (3,902.6)us-gaap_NetIncomeLoss | 1,418.2 us-gaap_NetIncomeLoss | 1,169.7 us-gaap_NetIncomeLoss
Ensco Plc [Member] |  |  |  |  |  |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES |  |  |  |  |  |  |  |  | 34.5 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_EnscoPlcMember | 35.0 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_EnscoPlcMember | 44.0 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_EnscoPlcMember
Contract drilling (exclusive of depreciation) |  |  |  |  |  |  |  |  | 31.8 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_EnscoPlcMember | 27.5 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_EnscoPlcMember | 51.2 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_EnscoPlcMember
Asset Impairment Charges |  |  |  |  |  |  |  |  | 0 us-gaap_AssetImpairmentCharges / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Depreciation |  |  |  |  |  |  |  |  | 0.2 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_EnscoPlcMember | 0.3 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_EnscoPlcMember | 0.4 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_EnscoPlcMember
General and administrative |  |  |  |  |  |  |  |  | 52.0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_EnscoPlcMember | 63.5 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_EnscoPlcMember | 63.8 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_EnscoPlcMember
OPERATING INCOME |  |  |  |  |  |  |  |  | (49.5)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_EnscoPlcMember | (56.3)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_EnscoPlcMember | (71.4)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_EnscoPlcMember
OTHER (EXPENSE) INCOME, NET |  |  |  |  |  |  |  |  | (67.0)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_EnscoPlcMember | (65.6)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_EnscoPlcMember | (41.8)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_EnscoPlcMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  | (116.5)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember | (121.9)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember | (113.2)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember
Total provision for income taxes |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_EnscoPlcMember
DISCONTINUED OPERATIONS, NET |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_EnscoPlcMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX |  |  |  |  |  |  |  |  | (3,786.1)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,540.1 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,282.9 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember
NET INCOME |  |  |  |  |  |  |  |  | (3,902.6)us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,418.2 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,169.7 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_EnscoPlcMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoPlcMember
NET INCOME ATTRIBUTABLE TO ENSCO |  |  |  |  |  |  |  |  | (3,902.6)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,418.2 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,169.7 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_EnscoPlcMember
ENSCO International Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES |  |  |  |  |  |  |  |  | 145.4 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 149.4 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 147.6 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
Contract drilling (exclusive of depreciation) |  |  |  |  |  |  |  |  | 145.4 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 149.4 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 147.6 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
Asset Impairment Charges |  |  |  |  |  |  |  |  | 0 us-gaap_AssetImpairmentCharges / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Depreciation |  |  |  |  |  |  |  |  | 7.6 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 4.0 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 3.5 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
General and administrative |  |  |  |  |  |  |  |  | 0.4 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0.5 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0.4 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
OPERATING INCOME |  |  |  |  |  |  |  |  | (8.0)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | (4.5)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | (3.9)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
OTHER (EXPENSE) INCOME, NET |  |  |  |  |  |  |  |  | (43.3)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | (9.4)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | (7.0)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  | (51.3)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | (13.9)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | (10.9)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
Total provision for income taxes |  |  |  |  |  |  |  |  | (44.9)us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 92.5 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 68.8 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
DISCONTINUED OPERATIONS, NET |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX |  |  |  |  |  |  |  |  | (3,651.0)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 366.2 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 335.9 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
NET INCOME |  |  |  |  |  |  |  |  | (3,657.4)us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 259.8 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 256.2 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
NET INCOME ATTRIBUTABLE TO ENSCO |  |  |  |  |  |  |  |  | (3,657.4)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 259.8 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 256.2 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
Pride International Inc. [Member] |  |  |  |  |  |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES |  |  |  |  |  |  |  |  | 0 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_PrideInternationalIncMember
Contract drilling (exclusive of depreciation) |  |  |  |  |  |  |  |  | 0 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_PrideInternationalIncMember
Asset Impairment Charges |  |  |  |  |  |  |  |  | 0 us-gaap_AssetImpairmentCharges / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Depreciation |  |  |  |  |  |  |  |  | 0 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_PrideInternationalIncMember
General and administrative |  |  |  |  |  |  |  |  | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_PrideInternationalIncMember
OPERATING INCOME |  |  |  |  |  |  |  |  | 0 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember
OTHER (EXPENSE) INCOME, NET |  |  |  |  |  |  |  |  | (54.7)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_PrideInternationalIncMember | (27.9)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_PrideInternationalIncMember | (50.0)us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_PrideInternationalIncMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  | (54.7)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember | (27.9)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember | (50.0)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember
Total provision for income taxes |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_PrideInternationalIncMember
DISCONTINUED OPERATIONS, NET |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_PrideInternationalIncMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX |  |  |  |  |  |  |  |  | (3,744.3)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 111.6 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 239.2 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember
NET INCOME |  |  |  |  |  |  |  |  | (3,799.0)us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 83.7 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 189.2 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember
NET INCOME ATTRIBUTABLE TO ENSCO |  |  |  |  |  |  |  |  | (3,799.0)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 83.7 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 189.2 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_PrideInternationalIncMember
Other Non-Guarantor Subsidiaries Of Ensco [Member] |  |  |  |  |  |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES |  |  |  |  |  |  |  |  | 4,683.0 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 4,446.4 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 3,767.3 us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
Contract drilling (exclusive of depreciation) |  |  |  |  |  |  |  |  | 2,198.1 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 2,077.6 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,764.1 us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
Asset Impairment Charges |  |  |  |  |  |  |  |  | 4,218.7 us-gaap_AssetImpairmentCharges / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Depreciation |  |  |  |  |  |  |  |  | 530.1 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 491.9 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 439.9 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
General and administrative |  |  |  |  |  |  |  |  | 79.5 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 82.8 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 84.7 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
OPERATING INCOME |  |  |  |  |  |  |  |  | (2,343.4)us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,794.1 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,478.6 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
OTHER (EXPENSE) INCOME, NET |  |  |  |  |  |  |  |  | 17.1 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 2.8 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 0.2 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  | (2,326.3)us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,796.9 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,478.8 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
Total provision for income taxes |  |  |  |  |  |  |  |  | 185.4 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 110.6 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 159.8 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
DISCONTINUED OPERATIONS, NET |  |  |  |  |  |  |  |  | (1,199.2)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | (2.2)us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 100.6 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
EQUITY EARNINGS IN AFFILIATES, NET OF TAX |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 0 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
NET INCOME |  |  |  |  |  |  |  |  | (3,710.9)us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,684.1 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,419.6 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  | (14.1)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | (9.7)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | (7.0)us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
NET INCOME ATTRIBUTABLE TO ENSCO |  |  |  |  |  |  |  |  | (3,725.0)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,674.4 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,412.6 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
Consolidating Adjustments [Member] |  |  |  |  |  |  |  |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |  |  |  |  |  |  |  |
OPERATING REVENUES |  |  |  |  |  |  |  |  | (298.4)us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (307.4)us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (320.1)us-gaap_RevenueOilAndGasServices / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
Contract drilling (exclusive of depreciation) |  |  |  |  |  |  |  |  | (298.4)us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (307.4)us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (320.1)us-gaap_CostOfServicesOilAndGas / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
Asset Impairment Charges |  |  |  |  |  |  |  |  | 0 us-gaap_AssetImpairmentCharges / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Depreciation |  |  |  |  |  |  |  |  | 0 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_CostOfServicesDepreciation / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
General and administrative |  |  |  |  |  |  |  |  | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_GeneralAndAdministrativeExpense / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
OPERATING INCOME |  |  |  |  |  |  |  |  | 0 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_OperatingIncomeLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
OTHER (EXPENSE) INCOME, NET |  |  |  |  |  |  |  |  | 0 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_NonoperatingIncomeExpense / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
Total provision for income taxes |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_IncomeTaxExpenseBenefit / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
DISCONTINUED OPERATIONS, NET |  |  |  |  |  |  |  |  | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |
EQUITY EARNINGS IN AFFILIATES, NET OF TAX |  |  |  |  |  |  |  |  | 11,181.4 us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (2,017.9)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (1,858.0)us-gaap_IncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
NET INCOME |  |  |  |  |  |  |  |  | 11,181.4 us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (2,017.9)us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (1,858.0)us-gaap_ProfitLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
NET INCOME ATTRIBUTABLE TO NONCONTROLLING INTERESTS |  |  |  |  |  |  |  |  | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_NetIncomeLossAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
NET INCOME ATTRIBUTABLE TO ENSCO |  |  |  |  |  |  |  |  | $ 11,181.4 us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | $ (2,017.9)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | $ (1,858.0)us-gaap_NetIncomeLoss / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember

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