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SHARE CAPITAL AND SHARE OPTIONS - Share Capital (Details) (USD $)
 0 Months Ended 1 Months Ended 12 Months Ended
Jun. 30, 2014
Sep. 30, 2014
Nov. 30, 2007
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Share capital:            
Common stock, value, authorized       $ 150,000,000glng_CommonStockValueAuthorized $ 100,000,000glng_CommonStockValueAuthorized  
Common stock, value, issued       93,415,000us-gaap_CommonStockValue 80,580,000us-gaap_CommonStockValue  
Common stock, shares authorized (in shares)       150,000,000us-gaap_CommonStockSharesAuthorized 150,000,000us-gaap_CommonStockSharesAuthorized  
Common shares, par value (in dollars per share)       $ 1us-gaap_CommonStockParOrStatedValuePerShare $ 1us-gaap_CommonStockParOrStatedValuePerShare  
Common shares, shares issued (in shares)       93,414,672us-gaap_CommonStockSharesIssued 80,579,295us-gaap_CommonStockSharesIssued  
Common shares, shares outstanding (in shares)       93,414,672us-gaap_CommonStockSharesOutstanding 80,579,295us-gaap_CommonStockSharesOutstanding  
Shares issued upon exercise of share options       185,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised 76,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised 267,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
Net proceeds for shares issued $ 660,947,000us-gaap_ProceedsFromIssuanceOfCommonStock $ 0us-gaap_ProceedsFromIssuanceOfCommonStock   $ 660,947,000us-gaap_ProceedsFromIssuanceOfCommonStock $ 0us-gaap_ProceedsFromIssuanceOfCommonStock $ 0us-gaap_ProceedsFromIssuanceOfCommonStock
Authorized amount of share repurchase program (in shares)     1,000,000glng_StockRepurchaseProgramAuthorizedAmountShares      
Remaining amount in share repurchase program (in shares)       300,000us-gaap_StockRepurchaseProgramRemainingNumberOfSharesAuthorizedToBeRepurchased    
Common Stock            
Share capital:            
Common shares, par value (in dollars per share) $ 1.00us-gaap_CommonStockParOrStatedValuePerShare
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		          
Shares issued upon exercise of share options       200,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 100,000us-gaap_StockIssuedDuringPeriodSharesStockOptionsExercised
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		  
Shares issued in offering (in shares) 12,650,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		 32,000,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember		        
Common Stock | Underwriter's Option            
Share capital:            
Shares issued in offering (in shares) 1,650,000us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_OverAllotmentOptionMember		 4,173,913us-gaap_StockIssuedDuringPeriodSharesNewIssues
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsidiarySaleOfStockAxis
= us-gaap_OverAllotmentOptionMember