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Variable Interest Entities - Sale and Leaseback summary (Details) - Hilli - Variable Interest Entity, Primary Beneficiary - CSSC - Hilli / CSSC $ in Millions | 6 Months Ended
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Jun. 30, 2018 USD ($)
Variable Interest Entity [Line Items] |
Sales value | $ 1,200.0
First repurchase option | 633.2
Last repurchase option | $ 300.0

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- Definition The repurchase amount under the first repurchase option pursuant to the sale and leaseback arrangement. + References No definition available. + Details
Name: | glng_FirstRepurchaseOption
Namespace Prefix: | glng_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition The repurchase amount under the last repurchase option pursuant to the sale and leaseback arrangement. + References No definition available. + Details
Name: | glng_LastRepurchaseOption
Namespace Prefix: | glng_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Amount of cash inflow before closing and debt issuance costs received by a seller-lessee in a sale-leaseback recognized in financing activities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 50 -URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51831-112757 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51843-112757 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 40 -Section 55 -Paragraph 51 -URI http://asc.fasb.org/extlink&oid=82846721&loc=d3e51840-112757 + Details
Name: | us-gaap_SaleLeasebackTransactionGrossProceedsFinancingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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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. + Details
Name: | us-gaap_VariableInterestEntityLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | glng_VesselNameAxis=glng_HilliMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_VariableInterestEntitiesByClassificationOfEntityAxis=us-gaap_VariableInterestEntityPrimaryBeneficiaryMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=glng_CSSCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_SaleLeasebackTransactionDescriptionAxis=glng_HilliCSSCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |