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Segment Information - Narrative (Details)	9 Months Ended
	Sep. 30, 2020 segment operational_flng numberOfUndergoingConversion
Segment Reporting [Abstract]
Number of reportable segments | segment	3
Number of operational FLNG | operational_flng	1
Number of undergoing conversions | numberOfUndergoingConversion	1

X

- Definition

Number Of Operational FLNG

+ References

No definition available.

+ Details

Name:	glng_NumberOfOperationalFLNG
Namespace Prefix:	glng_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number Of Undergoing Conversions

+ References

No definition available.

+ Details

Name:	glng_NumberOfUndergoingConversions
Namespace Prefix:	glng_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e8672-108599

+ Details

Name:	us-gaap_NumberOfReportableSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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