Property, Plant, and Equipment, Number Impaired

No definition available.

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- Definition

Amount of increase (decrease) in loss contingency liability.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=82911808&loc=d3e14326-108349

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- 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.

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- Definition

The charge against earnings resulting from the aggregate write down of tangible assets from their carrying value to their fair value.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 205
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109222650&loc=d3e1361-107760

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MATERIAL CHARGES AND OTHER OPERATING ITEMS (Details) $ in Millions			12 Months Ended
	Sep. 30, 2016 drilling_unit	Sep. 30, 2015 drilling_unit	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($) drilling_unit
Property, Plant and Equipment [Line Items]
Asset impairment charges			$ 0.0	$ 0.0	$ 34.3
Reversal of estimated settlement liaibility					1.4
Jack-up Rigs [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges					$ 34.3
Number of drilling units impaired \| drilling_unit	5	10			5
Material Charges and Other Operating Items [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges			$ 0.0	$ 0.0
Material Charges and Other Operating Items [Member] \| Jack-up Rigs [Member]
Property, Plant and Equipment [Line Items]
Asset impairment charges					$ 34.3