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v2.4.1.9

Guarantee Of Registered Securities (Condensed Consolidating Balance Sheets) (Details) (USD $) | Mar. 31, 2015 | Dec. 31, 2014 | Mar. 31, 2014 | Dec. 31, 2013
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Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | $ 887,800,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 664,800,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 122,500,000 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 165,600,000 us-gaap_CashAndCashEquivalentsAtCarryingValue
Short-term Investments | 745,300,000 us-gaap_ShortTermInvestments | 757,300,000 us-gaap_ShortTermInvestments |  |
Accounts receivable, net | 795,400,000 us-gaap_ReceivablesNetCurrent | 883,300,000 us-gaap_ReceivablesNetCurrent |  |
Accounts receivable from affiliates | 0 us-gaap_AccountsReceivableRelatedParties | 0 us-gaap_AccountsReceivableRelatedParties |  |
Other | 625,300,000 us-gaap_OtherAssetsCurrent | 629,400,000 us-gaap_OtherAssetsCurrent |  |
Total current assets | 3,053,800,000 us-gaap_AssetsCurrent | 2,934,800,000 us-gaap_AssetsCurrent |  |
PROPERTY AND EQUIPMENT, AT COST | 15,303,000,000 us-gaap_PropertyPlantAndEquipmentGross | 14,975,500,000 us-gaap_PropertyPlantAndEquipmentGross |  |
Less accumulated depreciation | 2,577,700,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment | 2,440,700,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment |  |
Property and equipment, net | 12,725,300,000 us-gaap_PropertyPlantAndEquipmentNet | 12,534,800,000 us-gaap_PropertyPlantAndEquipmentNet | 14,418,300,000 us-gaap_PropertyPlantAndEquipmentNet |
GOODWILL | 276,100,000 us-gaap_Goodwill | 276,100,000 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 | 291,000,000 us-gaap_OtherAssetsNoncurrent | 314,200,000 us-gaap_OtherAssetsNoncurrent |  |
TOTAL ASSETS | 16,346,200,000 us-gaap_Assets | 16,059,900,000 us-gaap_Assets |  |
Accounts payable and accrued liabilities | 922,100,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent | 1,069,800,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent |  |
Accounts payable to affiliates | 0 us-gaap_AccountsPayableRelatedPartiesCurrent | 0 us-gaap_AccountsPayableRelatedPartiesCurrent |  |
Current maturities of long-term debt | 211,500,000 us-gaap_LongTermDebtCurrent | 34,800,000 us-gaap_LongTermDebtCurrent |  |
Total current liabilities | 1,133,600,000 us-gaap_LiabilitiesCurrent | 1,104,600,000 us-gaap_LiabilitiesCurrent |  |
DUE TO AFFILIATES | 0 us-gaap_DueToRelatedPartiesNoncurrent | 0 us-gaap_DueToRelatedPartiesNoncurrent |  |
LONG-TERM DEBT | 5,919,300,000 us-gaap_LongTermDebtNoncurrent | 5,885,600,000 us-gaap_LongTermDebtNoncurrent |  |
DEFERRED INCOME TAXES | 182,100,000 us-gaap_DeferredTaxLiabilitiesNoncurrent | 179,500,000 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |
OTHER LIABILITIES | 596,100,000 us-gaap_OtherLiabilitiesNoncurrent | 667,300,000 us-gaap_OtherLiabilitiesNoncurrent |  |
ENSCO SHAREHOLDERS' EQUITY | 8,504,500,000 us-gaap_StockholdersEquity | 8,215,000,000 us-gaap_StockholdersEquity |  |
NONCONTROLLING INTERESTS | 10,600,000 us-gaap_MinorityInterest | 7,900,000 us-gaap_MinorityInterest |  |
Total equity | 8,515,100,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest | 8,222,900,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest |  |
Total liabilities and shareholders' equity | 16,346,200,000 us-gaap_LiabilitiesAndStockholdersEquity | 16,059,900,000 us-gaap_LiabilitiesAndStockholdersEquity |  |
Ensco Plc [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 286,500,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember | 287,400,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember | 38,100,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember | 46,500,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoPlcMember
Short-term Investments | 712,000,000 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember | 712,000,000 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts receivable, net | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts receivable from affiliates | 16,800,000 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoPlcMember | 34,500,000 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Other | 3,300,000 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 4,100,000 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Total current assets | 1,018,600,000 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,038,000,000 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
PROPERTY AND EQUIPMENT, AT COST | 2,100,000 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoPlcMember | 2,100,000 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Less accumulated depreciation | 1,800,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoPlcMember | 1,700,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Property and equipment, net | 300,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_EnscoPlcMember | 400,000 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 | 3,703,100,000 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 2,873,200,000 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
INVESTMENTS IN AFFILIATES | 9,484,200,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoPlcMember | 9,084,800,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
OTHER ASSETS, NET | 25,800,000 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 17,000,000 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
TOTAL ASSETS | 14,232,000,000 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoPlcMember | 13,013,400,000 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts payable and accrued liabilities | 52,300,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 47,800,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Accounts payable to affiliates | 14,800,000 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 23,500,000 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Current maturities of long-term debt | 145,500,000 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 0 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Total current liabilities | 212,600,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 71,300,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
DUE TO AFFILIATES | 1,698,500,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 994,800,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
LONG-TERM DEBT | 3,805,800,000 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_EnscoPlcMember | 3,724,400,000 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 | 8,515,100,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_EnscoPlcMember | 8,222,900,000 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 | 8,515,100,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoPlcMember | 8,222,900,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoPlcMember |  |
Total liabilities and shareholders' equity | 14,232,000,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_EnscoPlcMember | 13,013,400,000 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 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 500,000 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, net | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Accounts receivable from affiliates | 121,800,000 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 210,400,000 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Other | 70,200,000 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 86,900,000 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Total current assets | 192,000,000 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 297,300,000 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
PROPERTY AND EQUIPMENT, AT COST | 76,600,000 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 71,500,000 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Less accumulated depreciation | 36,500,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 34,100,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Property and equipment, net | 40,100,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 37,400,000 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 | 4,952,700,000 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 4,748,200,000 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
INVESTMENTS IN AFFILIATES | 1,280,600,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 1,233,500,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
OTHER ASSETS, NET | 46,400,000 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 47,400,000 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
TOTAL ASSETS | 6,511,800,000 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 6,363,800,000 us-gaap_Assets / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Accounts payable and accrued liabilities | 54,500,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 42,800,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Accounts payable to affiliates | 60,000,000 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 158,300,000 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 | 114,500,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 201,100,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
DUE TO AFFILIATES | 4,037,900,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 3,817,400,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
LONG-TERM DEBT | 149,200,000 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 149,200,000 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
DEFERRED INCOME TAXES | 178,700,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 176,800,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
OTHER LIABILITIES | 7,000,000 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 6,100,000 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
ENSCO SHAREHOLDERS' EQUITY | 2,024,500,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 2,013,200,000 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 | 2,024,500,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 2,013,200,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Total liabilities and shareholders' equity | 6,511,800,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_EnscoInternationalIncMember | 6,363,800,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_EnscoInternationalIncMember |  |
Pride International, Inc. [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 249,400,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 90,800,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 2,200,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 4,900,000 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, net | 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 | 0 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 | 249,400,000 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 90,800,000 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 | 1,806,600,000 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 1,835,000,000 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
INVESTMENTS IN AFFILIATES | 525,300,000 us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 461,600,000 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 | 2,581,300,000 us-gaap_Assets / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 2,387,400,000 us-gaap_Assets / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Accounts payable and accrued liabilities | 23,500,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 34,300,000 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 | 23,500,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 34,300,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
DUE TO AFFILIATES | 1,712,000,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 1,547,700,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
LONG-TERM DEBT | 1,964,300,000 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 1,973,200,000 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 | 6,300,000 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 7,000,000 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
ENSCO SHAREHOLDERS' EQUITY | (1,124,800,000)us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_PrideInternationalIncMember | (1,174,800,000)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 | (1,124,800,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember | (1,174,800,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Total liabilities and shareholders' equity | 2,581,300,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_PrideInternationalIncMember | 2,387,400,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_PrideInternationalIncMember |  |
Other Non-Guarantor Subsidiaries Of Ensco [Member] |  |  |  |
Guarantor Obligations [Line Items] |  |  |  |
Cash and cash equivalents | 351,900,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 286,600,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 82,200,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 113,700,000 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember
Short-term Investments | 33,300,000 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 45,300,000 us-gaap_ShortTermInvestments / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts receivable, net | 795,400,000 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 883,300,000 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts receivable from affiliates | 63,200,000 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 134,600,000 us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Other | 551,800,000 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 538,400,000 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total current assets | 1,795,600,000 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,888,200,000 us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
PROPERTY AND EQUIPMENT, AT COST | 15,224,300,000 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 14,901,900,000 us-gaap_PropertyPlantAndEquipmentGross / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Less accumulated depreciation | 2,539,400,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 2,404,900,000 us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Property and equipment, net | 12,684,900,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 12,497,000,000 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
GOODWILL | 276,100,000 us-gaap_Goodwill / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 276,100,000 us-gaap_Goodwill / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
DUE FROM AFFILIATES | 7,398,300,000 us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 6,308,800,000 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 | 218,800,000 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 249,800,000 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
TOTAL ASSETS | 22,373,700,000 us-gaap_Assets / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 21,219,900,000 us-gaap_Assets / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts payable and accrued liabilities | 791,800,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 944,900,000 us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Accounts payable to affiliates | 127,000,000 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 197,700,000 us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Current maturities of long-term debt | 66,000,000 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 34,800,000 us-gaap_LongTermDebtCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total current liabilities | 984,800,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 1,177,400,000 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
DUE TO AFFILIATES | 10,412,300,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 9,405,300,000 us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
LONG-TERM DEBT | 0 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 38,800,000 us-gaap_LongTermDebtNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
DEFERRED INCOME TAXES | 3,400,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 2,700,000 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
OTHER LIABILITIES | 582,800,000 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 654,200,000 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
ENSCO SHAREHOLDERS' EQUITY | 10,379,800,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 9,933,600,000 us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
NONCONTROLLING INTERESTS | 10,600,000 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 7,900,000 us-gaap_MinorityInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total equity | 10,390,400,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 9,941,500,000 us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember |  |
Total liabilities and shareholders' equity | 22,373,700,000 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_OtherNonGuarantorSubsidiariesMember | 21,219,900,000 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, net | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | 0 us-gaap_ReceivablesNetCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Accounts receivable from affiliates | (201,800,000)us-gaap_AccountsReceivableRelatedParties / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (379,500,000)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 | (201,800,000)us-gaap_AssetsCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (379,500,000)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 | (17,860,700,000)us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (15,765,200,000)us-gaap_DueFromAffiliateNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
INVESTMENTS IN AFFILIATES | (11,290,100,000)us-gaap_InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (10,779,900,000)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 | (29,352,600,000)us-gaap_Assets / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (26,924,600,000)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 | (201,800,000)us-gaap_AccountsPayableRelatedPartiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (379,500,000)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 | (201,800,000)us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (379,500,000)us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
DUE TO AFFILIATES | (17,860,700,000)us-gaap_DueToRelatedPartiesNoncurrent / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (15,765,200,000)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 | (11,290,100,000)us-gaap_StockholdersEquity / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (10,779,900,000)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 | (11,290,100,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | (10,779,900,000)us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |
Total liabilities and shareholders' equity | $ (29,352,600,000)us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember | $ (26,924,600,000)us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = esv_ConsolidatedAdjustmentsMember |  |

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