XML 67 R52.htm IDEA: XBRL DOCUMENT v3.8.0.1

Debt (Schedule Of Long-Term Debt Instruments) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 4,750.7	$ 5,274.5
Debt, Long-term and Short-term, Combined Amount	4,750.7	5,274.5
Long-term Debt, Current Maturities	0.0	(331.9)
Long-term Debt, Excluding Current Maturities	4,750.7	4,942.6
8.50% Senior notes due 2019
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 251.4	480.2
Debt instrument, interest rate, stated percentage	8.50%
Senior Note Maturity Year	2019
6.875% Senior notes due 2020
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 477.9	735.9
Debt instrument, interest rate, stated percentage	6.875%
Senior Note Maturity Year	2020
4.70% Senior notes due 2021
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 267.1	674.4
Debt instrument, interest rate, stated percentage	4.70%
Senior Note Maturity Year	2021
3.00% Exchangeable senior notes due 2024
Debt Instrument [Line Items]
Debt instrument, interest rate, stated percentage	3.00%
Senior Note Maturity Year	2024
3.00% Exchangeable senior notes due 2024 | Convertible Debt [Member]
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 635.7	604.3
Debt instrument, interest rate, stated percentage	8.00%
Senior Note Maturity Year	2024
4.50% Senior notes due 2024
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 619.3	618.6
Debt instrument, interest rate, stated percentage	4.50%
Senior Note Maturity Year	2024
8.00% Senior notes due 2024
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 337.9	0.0
Debt instrument, interest rate, stated percentage	8.00%
Senior Note Maturity Year	2024
5.20% Senior notes due 2025
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 663.6	662.8
Debt instrument, interest rate, stated percentage	5.20%
Senior Note Maturity Year	2025
7.20% Senior notes due 2027
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 149.3	149.2
Debt instrument, interest rate, stated percentage	7.20%
Senior Note Maturity Year	2027
7.875% Senior notes due 2040
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 376.7	378.3
Debt instrument, interest rate, stated percentage	7.875%
Senior Note Maturity Year	2040
5.75% Senior notes due 2044
Debt Instrument [Line Items]
Debt Instrument Carrying Value	$ 971.8	$ 970.8
Debt instrument, interest rate, stated percentage	5.75%
Senior Note Maturity Year	2044

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

Senior Note Maturity Year

+ References

No definition available.

+ Details

Name:	esv_SeniorNoteMaturityYear
Namespace Prefix:	esv_
Data Type:	xbrli:gYearItemType
Balance Type:	na
Period Type:	duration

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_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the aggregate of total long-term debt, including current maturities and short-term debt.

+ References

No definition available.

+ Details

Name:	us-gaap_DebtLongtermAndShorttermCombinedAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ 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 210.5-02.19,20)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

+ 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)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_LongTermDebtNoncurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Details

Name:	us-gaap_DebtInstrumentAxis=esv_EightPointFiveZeroPercentSeniorNotesDueTwoThousandNineteenMember
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_FourPointSevenZeroPercentSeniorNotesDueTwoThousandTwentyOneMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=esv_ThreePercentExchangeableSeniorNotesDueTwoThousandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
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_A8.00seniornotesdue2024Member
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_SevenPointTwoZeroPercentDebenturesDueTwoThousandTwentySevenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_DebtInstrumentAxis=esv_SevenPointEightSevenFivePercentSeniorNotesDueTwoThousandFortyMember
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: