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v2.4.1.9

Guarantee Of Registered Securities (Narrative) (Details) (USD $) | 12 Months Ended
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Dec. 31, 2014
Guarantor Obligations [Line Items] |
Senior notes aggregate outstanding principal balance | 1,700,000,000 us-gaap_SeniorNotes
8.50% Senior Notes Due 2019 [Member] |
Guarantor Obligations [Line Items] |
Senior note, maturity year | 2019
Debt instrument interest rate stated percentage | 8.50%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esv_EightPointFiveZeroPercentSeniorNotesMember
6.875% Senior notes due 2020 [Member] |
Guarantor Obligations [Line Items] |
Senior note, maturity year | 2020
Debt instrument interest rate stated percentage | 6.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esv_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentyMember
7.875% Senior Notes Due 2040 [Member] |
Guarantor Obligations [Line Items] |
Senior note, maturity year | 2040
Debt instrument interest rate stated percentage | 7.875%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esv_SevenPointEightSevenFivePercentSeniorNotesMember
7.20% Debentures due 2027 [Member] |
Guarantor Obligations [Line Items] |
Senior note, maturity year | 2027
Debt instrument interest rate stated percentage | 7.20%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esv_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember
Notes Issued | 150,000,000.0 us-gaap_NotesIssued1 / us-gaap_DebtInstrumentAxis = esv_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The fair value of notes issued in noncash investing and financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4332-108586 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4313-108586 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6367179&loc=d3e4304-108586 + Details
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- Definition Including the current and noncurrent portions, carrying value as of the balance sheet date of Notes with the highest claim on the assets of the issuer in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle if longer). Senior note holders are paid off in full before any payments are made to junior note holders. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16(a)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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