XML 40 R32.htm IDEA: XBRL DOCUMENT
v3.2.0.727

Fair Value Measurements (Schedule Of Carrying Values And Estimated Fair Values Of Debt Instruments) (Details) - USD ($) $ in Millions | Jun. 30, 2015 | Dec. 31, 2014
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Carrying Value | $ 5,925.7 | $ 5,920.4
Estimated Fair Value | $ 6,005.2 | $ 5,973.4
Three Point Two Five Percent Senior Notes Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 3.25% | 3.25%
Carrying Value | $ 0.0 | $ 998.0
Estimated Fair Value | $ 0.0 | $ 1,018.3
Four Point Six Five Percent Marine Administration Bonds Including Current Maturities Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.65% | 4.65%
Carrying Value | $ 0.0 | $ 27.0
Estimated Fair Value | $ 0.0 | $ 29.7
Four Point Three Three Percent Marine Administration Bonds Including Current Maturities Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.33% | 4.33%
Carrying Value | $ 14.4 | $ 46.6
Estimated Fair Value | $ 14.5 | $ 46.8
Seven Point Two Zero Percent Debentures Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.20% | 7.20%
Carrying Value | $ 149.2 | $ 149.2
Estimated Fair Value | $ 177.2 | $ 171.4
Seven Point Eight Seven Five Percent Senior Notes Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 7.875% | 7.875%
Carrying Value | $ 380.5 | $ 381.2
Estimated Fair Value | $ 333.0 | $ 363.8
Eight Point Five Zero Percent Senior Notes Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 8.50% | 8.50%
Carrying Value | $ 575.2 | $ 583.8
Estimated Fair Value | $ 593.0 | $ 611.8
Four Point Five Percent Senior Notes Member [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.50% | 4.50%
Carrying Value | $ 624.2 | $ 624.2
Estimated Fair Value | $ 592.3 | $ 602.0
Five Point Two Percent Senior Notes [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.20% | 5.20%
Carrying Value | $ 697.4 | $ 0.0
Estimated Fair Value | $ 696.4 | $ 0.0
Six Point Eight Seven Five Percent Senior Notes Due Two Thousand Twenty Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.875% | 6.875%
Carrying Value | $ 999.7 | $ 1,008.2
Estimated Fair Value | $ 1,029.1 | $ 1,008.5
Five Point Seven Five Percent Senior Notes [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 5.75% | 5.75%
Carrying Value | $ 1,003.8 | $ 622.3
Estimated Fair Value | $ 1,015.6 | $ 615.8
Four Point Seven Zero Percent Senior Notes Member |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Debt Instrument, Interest Rate, Stated Percentage | 4.70% | 4.70%
Carrying Value | $ 1,481.3 | $ 1,479.9
Estimated Fair Value | $ 1,554.1 | $ 1,505.3

X
- Definition Debt Instrument Carrying Value + References No definition available. + Details
Name: | esv_DebtInstrumentCarryingValue
Namespace Prefix: | esv_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13476-108611 + Details
Name: | us-gaap_DebtInstrumentFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: 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
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_FairValueAssetsAndLiabilitiesMeasuredOnRecurringAndNonrecurringBasisLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_ThreePointTwoFivePercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_FourPointSixFivePercentMarineAdministrationBondsIncludingCurrentMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_FourPointThreeThreePercentMarineAdministrationBondsIncludingCurrentMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_SevenPointTwoZeroPercentDebenturesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_SevenPointEightSevenFivePercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_EightPointFiveZeroPercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_FourPointFivePercentSeniorNotesMemberMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_FivePointTwoPercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_SixPointEightSevenFivePercentSeniorNotesDueTwoThousandTwentyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_FivePointSevenFivePercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_DebtInstrumentAxis=esv_FourPointSevenZeroPercentSeniorNotesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |