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Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details) | Dec. 31, 2014 contract rigs
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Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 70 esv_TotalNumberOfContractDrillingRigs
Number of drilling management contracts | 6 esv_NumberOfDrillingManagementContracts
Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 28 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember
Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 42 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember
North & South America (Excluding Brazil) [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 17 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementGeographicalAxis = esv_NorthSouthAmericaExclBrazilMember
North & South America (Excluding Brazil) [Member] | Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 9 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember / us-gaap_StatementGeographicalAxis = esv_NorthSouthAmericaExclBrazilMember
North & South America (Excluding Brazil) [Member] | Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 8 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember / us-gaap_StatementGeographicalAxis = esv_NorthSouthAmericaExclBrazilMember
Middle East & Africa [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 15 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementGeographicalAxis = us-gaap_MiddleEastMember
Middle East & Africa [Member] | Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 4 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember / us-gaap_StatementGeographicalAxis = us-gaap_MiddleEastMember
Middle East & Africa [Member] | Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 11 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember / us-gaap_StatementGeographicalAxis = us-gaap_MiddleEastMember
Asia & Pacific Rim [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 12 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
Asia & Pacific Rim [Member] | Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 4 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
Asia & Pacific Rim [Member] | Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 8 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember / us-gaap_StatementGeographicalAxis = us-gaap_AsiaMember
Europe & Mediterranean [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 15 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementGeographicalAxis = esv_EuropeMediterraneanMember
Europe & Mediterranean [Member] | Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 4 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember / us-gaap_StatementGeographicalAxis = esv_EuropeMediterraneanMember
Europe & Mediterranean [Member] | Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 11 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember / us-gaap_StatementGeographicalAxis = esv_EuropeMediterraneanMember
Brazil [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 4 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementGeographicalAxis = country_BR
Brazil [Member] | Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 4 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember / us-gaap_StatementGeographicalAxis = country_BR
Brazil [Member] | Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 0 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember / us-gaap_StatementGeographicalAxis = country_BR
Asia & Pacific Rim (Under Construction) [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 5 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementGeographicalAxis = esv_AsiaUnderConstructionMember
Asia & Pacific Rim (Under Construction) [Member] | Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 3 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember / us-gaap_StatementGeographicalAxis = esv_AsiaUnderConstructionMember
Asia & Pacific Rim (Under Construction) [Member] | Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 2 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember / us-gaap_StatementGeographicalAxis = esv_AsiaUnderConstructionMember
Middle East Under Construction [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 2 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementGeographicalAxis = esv_MiddleEastUnderConstructionMember
Middle East Under Construction [Member] | Floaters [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 0 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember / us-gaap_StatementGeographicalAxis = esv_MiddleEastUnderConstructionMember
Middle East Under Construction [Member] | Jackups [Member] |
Segment Reporting Information [Line Items] |
Total number of contract drilling rigs | 2 esv_TotalNumberOfContractDrillingRigs / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember / us-gaap_StatementGeographicalAxis = esv_MiddleEastUnderConstructionMember

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