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BASIS OF PREPARATION AND SIGNIFICANT ACCOUNTING POLICIES - Gain (Loss) Derivative Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Price Risk Derivatives [Line Items]
Realized gain on oil derivative instrument	$ 2,539	$ 13,089	$ 26,737
Vessels - FLNG | Energy related derivative
Price Risk Derivatives [Line Items]
Realized gain on oil derivative instrument	2,539	13,089	26,737
Unrealized loss on oil derivative instrument	(45,100)	(39,090)	(9,970)
Gain (loss) on price risk derivatives, net	$ (42,561)	$ (26,001)	$ 16,767

X

- Definition

Realized Gain on Price Risk Cash Flow Derivatives, before Tax

+ References

No definition available.

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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=121590274&loc=SL5618551-113959

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-Topic 815
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-Section 50
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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 loss related to the decrease 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)
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-Section 45
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