XML 61 R48.htm IDEA: XBRL DOCUMENT v3.7.0.1

Segment Information (Schedule Of Geographic Distribution Of Rigs By Segment) (Details)	Jun. 30, 2017
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	55	[1]
Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	21
Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	34
North & South America (Excl. Brazil) [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	13	[1]
North & South America (Excl. Brazil) [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	8
North & South America (Excl. Brazil) [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	5
Europe & Mediterranean [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	17	[1]
Europe & Mediterranean [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	6
Europe & Mediterranean [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	11
Middle East & Africa [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	12	[1]
Middle East & Africa [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
Middle East & Africa [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	11
Asia & Pacific Rim [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	9	[1]
Asia & Pacific Rim [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	4
Asia & Pacific Rim [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	5
Discontinued Operations, Held-for-sale [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	2	[1]
Discontinued Operations, Held-for-sale [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
Discontinued Operations, Held-for-sale [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
Construction in Progress [Member] | Asia & Pacific Rim [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	2	[1]
Construction in Progress [Member] | Asia & Pacific Rim [Member] | Floaters [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
Construction in Progress [Member] | Asia & Pacific Rim [Member] | Jackup [Member]
Segment Reporting Information [Line Items]
Number of contract drilling rigs (in rigs)	1
[1] We provide management services on two rigs owned by third-parties not included in the table above.

X

- Definition

Total Number Of Contract Drilling Rigs

+ References

No definition available.

+ Details

Name:	esv_TotalNumberOfContractDrillingRigs
Namespace Prefix:	esv_
Data Type:	xbrli:integerItemType
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_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

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

X

- Details

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

X

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_AmericasMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_EuropeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_MiddleEastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_AsiaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementGeographicalAxis=us-gaap_DiscontinuedOperationsHeldforsaleMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_PropertyPlantAndEquipmentByTypeAxis=us-gaap_ConstructionInProgressMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: