XML 71 R58.htm IDEA: XBRL DOCUMENT v3.8.0.1

Supplemental Financial Information Schedule of Revenue by Major Customers, by Reporting Segments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Sales Revenue, Services, Net | Customer Concentration Risk
Revenue, Major Customer [Line Items]
Concentration risk, percentage	100.00%	100.00%	100.00%	100.00%
Sales Revenue, Services, Net | Customer Concentration Risk | Total S.A.
Revenue, Major Customer [Line Items]
Concentration risk, percentage	24.00%	23.00%	23.00%	16.00%
Sales Revenue, Services, Net | Customer Concentration Risk | BP
Revenue, Major Customer [Line Items]
Concentration risk, percentage	15.00%	13.00%	15.00%	12.00%
Sales Revenue, Services, Net | Customer Concentration Risk | Petrobras
Revenue, Major Customer [Line Items]
Concentration risk, percentage	11.00%	9.00%	11.00%	11.00%
Sales Revenue, Services, Net | Customer Concentration Risk | ConocoPhillips
Revenue, Major Customer [Line Items]
Concentration risk, percentage	3.00%	2.00%	2.00%	12.00%
Concentration risk excluding termination fee, percentage				3.00%
Sales Revenue, Services, Net | Customer Concentration Risk | Other
Revenue, Major Customer [Line Items]
Concentration risk, percentage	47.00%	53.00%	49.00%	49.00%
Floaters | Sales Revenue, Services, Net | Customer Concentration Risk | BP
Revenue, Major Customer [Line Items]
Concentration risk, percentage	78.00%	73.00%	78.00%	75.00%
Sales Revenue, Net
Revenue, Major Customer [Line Items]
Gain (loss) on contract termination				$ 205.0
Sales Revenue, Net | ENSCO DS-9
Revenue, Major Customer [Line Items]
Gain (loss) on contract termination				$ 185.0

X

- Definition

Concentration Risk excl Termination Fee, Percentage

+ References

No definition available.

+ Details

Name:	esv_ConcentrationRiskexclTerminationFeePercentage
Namespace Prefix:	esv_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

+ Details

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

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

X

- Definition

Gain (loss) related to the termination of a contract between the parties. The termination may be due to many causes including early termination of a lease by a lessee, a breach of contract by one party, or a failure to perform.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585

+ Details

Name:	us-gaap_GainLossOnContractTermination
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_SalesRevenueServicesNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_CustomerConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=esv_TotalS.A.Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=esv_BPMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=esv_PetrobrasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=esv_ConocoPhillipsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_MajorCustomersAxis=esv_OtherCustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=esv_FloatersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SalesRevenueNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_ProductOrServiceAxis=esv_ENSCODS9Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: