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v2.4.1.9

Guarantee Of Registered Securities (Condensed Consolidating Balance Sheets) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | $ 664.8 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 165.6 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 487.1 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 430.7 us-gaap_CashAndCashEquivalentsAtCarryingValue
Short-term Investments | 757.3 us-gaap_ShortTermInvestments | 50.0 us-gaap_ShortTermInvestments |  |
Accounts receivable | 883.3 us-gaap_ReceivablesNetCurrent | 855.7 us-gaap_ReceivablesNetCurrent |  |
Accounts receivable from affiliates | 0 us-gaap_AccountsReceivableRelatedParties | 0 us-gaap_AccountsReceivableRelatedParties |  |
Other | 629.4 us-gaap_OtherAssetsCurrent | 463.9 us-gaap_OtherAssetsCurrent |  |
Total current assets | 2,934.8 us-gaap_AssetsCurrent | 1,535.2 us-gaap_AssetsCurrent |  |
PROPERTY AND EQUIPMENT, AT COST | 14,975.5 us-gaap_PropertyPlantAndEquipmentGross | 17,498.5 us-gaap_PropertyPlantAndEquipmentGross |  |
Less accumulated depreciation | 2,440.7 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 3,187.5 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |  |
Property and equipment, net | 12,534.8 us-gaap_PropertyPlantAndEquipmentNet | 14,311.0 us-gaap_PropertyPlantAndEquipmentNet | 13,145.6 us-gaap_PropertyPlantAndEquipmentNet |
GOODWILL | 276.1 us-gaap_Goodwill | 3,274.0 us-gaap_Goodwill |  |
DUE FROM AFFILIATES | 0 us-gaap_DueFromAffiliateNoncurrent | 0 us-gaap_DueFromAffiliateNoncurrent |  |
INVESTMENTS IN AFFILIATES | 0 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures | 0 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures |  |
OTHER ASSETS, NET | 314.2 us-gaap_OtherAssetsNoncurrent | 352.7 us-gaap_OtherAssetsNoncurrent |  |
TOTAL ASSETS | 16,059.9 us-gaap_Assets | 19,472.9 us-gaap_Assets |  |
Accounts payable and accrued liabilities | 1,069.8 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent | 999.8 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent |  |
Accounts payable to affiliates | 0 us-gaap_AccountsPayableRelatedPartiesCurrent | 0 us-gaap_AccountsPayableRelatedPartiesCurrent |  |
Current maturities of long-term debt | 34.8 us-gaap_LongTermDebtCurrent | 47.5 us-gaap_LongTermDebtCurrent |  |
Total current liabilities | 1,104.6 us-gaap_LiabilitiesCurrent | 1,047.3 us-gaap_LiabilitiesCurrent |  |
DUE TO AFFILIATES | 0 us-gaap_DueToRelatedPartiesNoncurrent | 0 us-gaap_DueToRelatedPartiesNoncurrent |  |
LONG-TERM DEBT | 5,885.6 us-gaap_LongTermDebtNoncurrent | 4,718.9 us-gaap_LongTermDebtNoncurrent |  |
DEFERRED INCOME TAXES | 179.5 us-gaap_DeferredTaxLiabilitiesNoncurrent | 362.1 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |
OTHER LIABILITIES | 667.3 us-gaap_OtherLiabilitiesNoncurrent | 545.7 us-gaap_OtherLiabilitiesNoncurrent |  |
ENSCO SHAREHOLDERS' EQUITY | 8,215.0 us-gaap_StockholdersEquity | 12,791.6 us-gaap_StockholdersEquity |  |
NONCONTROLLING INTERESTS | 7.9 us-gaap_MinorityInterest | 7.3 us-gaap_MinorityInterest |  |
Total equity | 8,222.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 12,798.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |
Total liabilities and shareholders' equity | 16,059.9 us-gaap_LiabilitiesAndStockholdersEquity | 19,472.9 us-gaap_LiabilitiesAndStockholdersEquity |  |
Ensco Plc [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 287.4 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember | 46.5 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember | 271.8 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember | 236.6 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember
Short-term Investments | 712.0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts receivable | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts receivable from affiliates | 34.5 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,235.0 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Other | 4.1 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 3.2 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Total current assets | 1,038.0 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,284.7 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
PROPERTY AND EQUIPMENT, AT COST | 2.1 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoPlcMember | 2.1 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Less accumulated depreciation | 1.7 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoPlcMember | 1.5 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Property and equipment, net | 0.4 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_EnscoPlcMember | 0.6 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
GOODWILL | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
DUE FROM AFFILIATES | 2,873.2 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 4,876.8 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
INVESTMENTS IN AFFILIATES | 9,084.8 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoPlcMember | 13,830.1 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
OTHER ASSETS, NET | 17.0 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 8.8 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
TOTAL ASSETS | 13,013.4 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoPlcMember | 20,001.0 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts payable and accrued liabilities | 47.8 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 31.5 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts payable to affiliates | 23.5 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 3,666.1 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Current maturities of long-term debt | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Total current liabilities | 71.3 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 3,697.6 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
DUE TO AFFILIATES | 994.8 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,030.8 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
LONG-TERM DEBT | 3,724.4 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 2,473.7 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
DEFERRED INCOME TAXES | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
OTHER LIABILITIES | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
ENSCO SHAREHOLDERS' EQUITY | 8,222.9 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_EnscoPlcMember | 12,798.9 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
NONCONTROLLING INTERESTS | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Total equity | 8,222.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoPlcMember | 12,798.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Total liabilities and shareholders' equity | 13,013.4 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_EnscoPlcMember | 20,001.0 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
ENSCO International Inc. [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0.5 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 1.7 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoInternationalIncMember
Short-term Investments | 0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Accounts receivable | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Accounts receivable from affiliates | 210.4 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 213.8 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Other | 86.9 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 61.3 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Total current assets | 297.3 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 275.6 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
PROPERTY AND EQUIPMENT, AT COST | 71.5 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 34.3 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Less accumulated depreciation | 34.1 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 26.5 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Property and equipment, net | 37.4 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 7.8 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
GOODWILL | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
DUE FROM AFFILIATES | 4,748.2 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 4,236.0 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
INVESTMENTS IN AFFILIATES | 1,233.5 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 4,868.6 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
OTHER ASSETS, NET | 47.4 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 60.1 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
TOTAL ASSETS | 6,363.8 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 9,448.1 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Accounts payable and accrued liabilities | 42.8 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 9.1 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Accounts payable to affiliates | 158.3 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 549.7 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Current maturities of long-term debt | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Total current liabilities | 201.1 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 558.8 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
DUE TO AFFILIATES | 3,817.4 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 2,760.4 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
LONG-TERM DEBT | 149.2 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 149.1 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
DEFERRED INCOME TAXES | 176.8 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 358.3 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
OTHER LIABILITIES | 6.1 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 2.3 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
ENSCO SHAREHOLDERS' EQUITY | 2,013.2 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 5,619.2 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
NONCONTROLLING INTERESTS | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Total equity | 2,013.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 5,619.2 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Total liabilities and shareholders' equity | 6,363.8 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 9,448.1 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Pride International Inc. [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 90.8 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 4.9 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 85.0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 22.6 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_PrideInternationalIncMember
Short-term Investments | 0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Accounts receivable | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Accounts receivable from affiliates | 0 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 5.5 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Other | 0 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Total current assets | 90.8 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 10.4 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
PROPERTY AND EQUIPMENT, AT COST | 0 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Less accumulated depreciation | 0 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Property and equipment, net | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
GOODWILL | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
DUE FROM AFFILIATES | 1,835.0 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 1,898.0 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
INVESTMENTS IN AFFILIATES | 461.6 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 4,092.2 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
OTHER ASSETS, NET | 0 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
TOTAL ASSETS | 2,387.4 us-gaap_Assets / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 6,000.6 us-gaap_Assets / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Accounts payable and accrued liabilities | 34.3 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 34.2 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Accounts payable to affiliates | 0 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Current maturities of long-term debt | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Total current liabilities | 34.3 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 34.2 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
DUE TO AFFILIATES | 1,547.7 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 1,331.1 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
LONG-TERM DEBT | 1,973.2 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 2,007.8 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
DEFERRED INCOME TAXES | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
OTHER LIABILITIES | 7.0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 8.7 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
ENSCO SHAREHOLDERS' EQUITY | (1,174.8)us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 2,618.8 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
NONCONTROLLING INTERESTS | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Total equity | (1,174.8)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 2,618.8 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Total liabilities and shareholders' equity | 2,387.4 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 6,000.6 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Other Non-Guarantor Subsidiaries Of Ensco [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 286.6 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 113.7 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 128.6 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 171.5 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
Short-term Investments | 45.3 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 50.0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts receivable | 883.3 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 855.7 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts receivable from affiliates | 134.6 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 4,169.2 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Other | 538.4 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 399.4 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total current assets | 1,888.2 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 5,588.0 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
PROPERTY AND EQUIPMENT, AT COST | 14,901.9 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 17,462.1 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Less accumulated depreciation | 2,404.9 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 3,159.5 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Property and equipment, net | 12,497.0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 14,302.6 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
GOODWILL | 276.1 us-gaap_Goodwill / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 3,274.0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
DUE FROM AFFILIATES | 6,308.8 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 5,069.7 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
INVESTMENTS IN AFFILIATES | 0 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 0 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
OTHER ASSETS, NET | 249.8 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 283.8 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
TOTAL ASSETS | 21,219.9 us-gaap_Assets / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 28,518.1 us-gaap_Assets / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts payable and accrued liabilities | 944.9 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 925.0 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts payable to affiliates | 197.7 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,407.7 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Current maturities of long-term debt | 34.8 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 47.5 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total current liabilities | 1,177.4 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 2,380.2 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
DUE TO AFFILIATES | 9,405.3 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 10,958.2 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
LONG-TERM DEBT | 38.8 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 88.3 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
DEFERRED INCOME TAXES | 2.7 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 3.8 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
OTHER LIABILITIES | 654.2 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 534.7 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
ENSCO SHAREHOLDERS' EQUITY | 9,933.6 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 14,545.6 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
NONCONTROLLING INTERESTS | 7.9 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 7.3 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total equity | 9,941.5 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 14,552.9 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total liabilities and shareholders' equity | 21,219.9 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 28,518.1 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Consolidating Adjustments [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember
Short-term Investments | 0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Accounts receivable | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Accounts receivable from affiliates | (379.5)us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (5,623.5)us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Other | 0 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Total current assets | (379.5)us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (5,623.5)us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
PROPERTY AND EQUIPMENT, AT COST | 0 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Less accumulated depreciation | 0 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Property and equipment, net | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
GOODWILL | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
DUE FROM AFFILIATES | (15,765.2)us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (16,080.5)us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
INVESTMENTS IN AFFILIATES | (10,779.9)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (22,790.9)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
OTHER ASSETS, NET | 0 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
TOTAL ASSETS | (26,924.6)us-gaap_Assets / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (44,494.9)us-gaap_Assets / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Accounts payable and accrued liabilities | 0 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Accounts payable to affiliates | (379.5)us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (5,623.5)us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Current maturities of long-term debt | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Total current liabilities | (379.5)us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (5,623.5)us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
DUE TO AFFILIATES | (15,765.2)us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (16,080.5)us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
LONG-TERM DEBT | 0 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
DEFERRED INCOME TAXES | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
OTHER LIABILITIES | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
ENSCO SHAREHOLDERS' EQUITY | (10,779.9)us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (22,790.9)us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
NONCONTROLLING INTERESTS | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Total equity | (10,779.9)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (22,790.9)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Total liabilities and shareholders' equity | $ (26,924.6)us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | $ (44,494.9)us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |

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