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Accounting Policies - Use of estimates (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2018 USD ($) vessel	Sep. 30, 2017 USD ($)
Price Risk Derivatives [Line Items]
Number of vessels in sale and leaseback transaction | vessel	8
FLNG derivative | FLNG
Price Risk Derivatives [Line Items]
Realized gain on oil derivative instrument	$ 14,318	$ 0
Unrealized gain on oil derivative instrument	185,770	0
Gain on FLNG derivative instrument	$ 200,088	$ 0

X

- Definition

Realized Gain on Price Risk Cash Flow Derivatives, before Tax

+ References

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- Definition

Sale Leaseback Transaction, Number of Vessels

+ References

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- Definition

The aggregate net gain (loss) on price risk derivatives included in earnings in the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4A
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5618551-113959

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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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.

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No definition available.

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- Definition

Amount of unrealized gain from the increase in fair value of price risk derivatives designated as cash flow hedging instruments recorded in accumulated other comprehensive income in the period, before taxes, to the extent that the cash flow hedge is determined to be effective.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959

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