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ACCOUNTING POLICIES - Property and Equipment (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Minimum
Property and equipment:
Drydocking expense reimbursement period	2 years
Minimum | Vessels
Property and equipment:
Useful life of property and equipment, minimum (in years)	40 years
Minimum | Deferred drydocking expenditure
Property and equipment:
Useful life of property and equipment, minimum (in years)	2 years
Minimum | Office equipment and fittings
Property and equipment:
Useful life of property and equipment, minimum (in years)	3 years
Maximum
Property and equipment:
Drydocking expense reimbursement period	5 years
Maximum | Vessels
Property and equipment:
Useful life of property and equipment, minimum (in years)	50 years
Maximum | Deferred drydocking expenditure
Property and equipment:
Useful life of property and equipment, minimum (in years)	5 years
Maximum | Office equipment and fittings
Property and equipment:
Useful life of property and equipment, minimum (in years)	6 years
Newbuildings
Property and equipment:
Interest costs capitalized during period	$ 10.3	$ 3.6	$ 0
Vessel to FSRU retrofitting
Property and equipment:
Interest costs capitalized during period	$ 1.8	$ 1.9	$ 0.5

X

- Definition

Drydocking Expense Reimbursement Period

+ References

No definition available.

+ Details

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Namespace Prefix:	glng_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Amount of interest capitalized during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 835

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Allowance for Funds Used during Construction

-URI http://asc.fasb.org/extlink&oid=6504829



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 34

-Paragraph 21

-Subparagraph b

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Details

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

X

- Definition

Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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