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v2.4.1.9

Goodwill and Other Intangible Assets and Liabilities (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 16, 2014 | Sep. 30, 2014 | May 31, 2014 | Dec. 31, 2012
Goodwill [Line Items] |  |  |  |  |  |
Asset Impairment Charges, Assumptions Used, Weighted Average Capital Cost | 11.00%esv_AssetImpairmentChargesAssumptionsUsedWeightedAverageCapitalCost |  |  |  |  |
Goodwill, Gross |  |  |  |  | $ 3,100.0 us-gaap_GoodwillGross |
Price Per Barrel | 55 esv_PricePerBarrel |  |  | 95 esv_PricePerBarrel |  |
Goodwill | 276.1 us-gaap_Goodwill | 3,274.0 us-gaap_Goodwill |  |  |  |
Drilling contract intangible assets, Gross Carrying Amount | 209.0 us-gaap_FiniteLivedIntangibleAssetsGross | 209.0 us-gaap_FiniteLivedIntangibleAssetsGross |  |  |  | 209.0 us-gaap_FiniteLivedIntangibleAssetsGross
Intangible Assets, Accumulated Amortization [Roll Forward] |  |  |  |  |  |
Balance, beginning of period | (130.6)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (88.3)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  |  |  |
Amortization | (32.7)us-gaap_AmortizationOfIntangibleAssets | (42.3)us-gaap_AmortizationOfIntangibleAssets |  |  |  |
Balance, end of period | (163.3)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization | (130.6)us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization |  |  |  |
Intangible Assets, Net Carrying Amount [Roll Forward] |  |  |  |  |  |
Balance, beginning of period | 78.4 us-gaap_IntangibleAssetsNetExcludingGoodwill | 120.7 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |  |  |
Amortization | (32.7)us-gaap_AmortizationOfIntangibleAssets | (42.3)us-gaap_AmortizationOfIntangibleAssets |  |  |  |
Balance, end of period | 45.7 us-gaap_IntangibleAssetsNetExcludingGoodwill | 78.4 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |  |  |
Drilling contract intangible liabilities, Gross Carrying Amount | 278.0 esv_FiniteLivedIntangibleLiabilitiesGross | 278.0 esv_FiniteLivedIntangibleLiabilitiesGross |  |  |  | 278.0 esv_FiniteLivedIntangibleLiabilitiesGross
Intangible Liabilities, Accumulated Amortization [Roll Forward] |  |  |  |  |  |
Balance, beginning of period | (208.9)esv_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization | (160.0)esv_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization |  |  |  |
Amortization | (28.4)esv_AmortizationIncome | (48.9)esv_AmortizationIncome |  |  |  |
Balance, end of period | (237.3)esv_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization | (208.9)esv_FiniteLivedIntangibleLiabilitiesAccumulatedAmortization |  |  |  |
Intangible Liabilities, Net Carrying Amount [Roll Forward] |  |  |  |  |  |
Balance, beginning of period | 69.1 esv_IntangibleLiabilitiesNetExcludingGoodwill | 118.0 esv_IntangibleLiabilitiesNetExcludingGoodwill |  |  |  |
Amortization | (28.4)esv_AmortizationIncome | (48.9)esv_AmortizationIncome |  |  |  |
Balance, end of period | 40.7 esv_IntangibleLiabilitiesNetExcludingGoodwill | 69.1 esv_IntangibleLiabilitiesNetExcludingGoodwill |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |
2014 | (4.5)esv_FiniteLivedIntangibleAssetsExpenseIncomeNetNextTwelveMonths |  |  |  |  |
2015 | (0.8)esv_FiniteLivedIntangibleAssetsExpenseIncomeNetYearTwo |  |  |  |  |
2016 | 0.3 esv_FiniteLivedIntangibleAssetsExpenseIncomeNetYearThree |  |  |  |  |
Total | (5.0)esv_FiniteLivedIntangibleAssetsExpenseIncomeNet |  |  |  |  |
Share Price |  |  | $ 25.88 us-gaap_SharePrice |  |  |
Asset Impairment Charges, Assumptions Used, Terminal Growth Rate | 3.00%esv_AssetImpairmentChargesAssumptionsUsedTerminalGrowthRate |  |  |  |  |
Floaters [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill, Gross | 3,081.4 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember | 3,081.4 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember |  |  |  | 3,081.4 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount |  |  |  |  | 7.00%us-gaap_ReportingUnitPercentageOfFairValueInExcessOfCarryingAmount / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember |
Goodwill | 83.5 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember | 3,081.4 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember |  |  |  | 3,081.4 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |
Goodwill, Impaired, Accumulated Impairment Loss | (2,997.9)us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember | 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember |  |  |  | 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = esv_FloatersMember
Jackups [Member] |  |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |  |
Goodwill, Gross | 192.6 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember | 192.6 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember |  |  |  | 192.6 us-gaap_GoodwillGross / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember
Goodwill | 192.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember | 192.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember |  |  |  | 192.6 us-gaap_Goodwill / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |
Goodwill, Impaired, Accumulated Impairment Loss | $ 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember | $ 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember |  |  |  | $ 0 us-gaap_GoodwillImpairedAccumulatedImpairmentLoss / us-gaap_StatementBusinessSegmentsAxis = esv_JackupsMember
Minimum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |
Share Price During The Period | $ 25.88 esv_SharePriceDuringThePeriod / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |
Asset Impairment Charges, Assumptions Used, Price-To-Earnings Multiple | 6.0 esv_AssetImpairmentChargesAssumptionsUsedPriceToEarningsMultiple / us-gaap_RangeAxis = us-gaap_MinimumMember |  |  |  |  |
Maximum [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |
Share Price During The Period | $ 41.99 esv_SharePriceDuringThePeriod / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |
Asset Impairment Charges, Assumptions Used, Price-To-Earnings Multiple | 6.75 esv_AssetImpairmentChargesAssumptionsUsedPriceToEarningsMultiple / us-gaap_RangeAxis = us-gaap_MaximumMember |  |  |  |  |
Weighted Average [Member] |  |  |  |  |  |
Finite-Lived Intangible Assets, Net, Amortization Income (Expense), Fiscal Year Maturity [Abstract] |  |  |  |  |  |
Share Price | $ 35.23 us-gaap_SharePrice / us-gaap_RangeAxis = us-gaap_WeightedAverageMember |  |  |  |  |

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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(2) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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- Definition Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph ((a)(1),(b)) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16323-109275 + Details
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