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Commitments and Contingencies - Joint Ventures (Detail) - USD ($)
Dec. 31, 2019
Dec. 11, 2017
Long-term Purchase Commitment [Line Items]    
Equity method investment, ownership interest 100.00%  
Minimum    
Long-term Purchase Commitment [Line Items]    
Equity method investment, ownership interest 20.00%  
Maximum    
Long-term Purchase Commitment [Line Items]    
Equity method investment, ownership interest 52.00%  
Yamal LNG Joint Venture    
Long-term Purchase Commitment [Line Items]    
Equity method investment, ownership interest 50.00%  
Teekay LNG | Bahrain LNG Joint Venture    
Long-term Purchase Commitment [Line Items]    
Equity method investment, ownership interest 30.00%  
Teekay LNG | Yamal LNG Joint Venture    
Long-term Purchase Commitment [Line Items]    
Equity method investment, ownership interest   50.00%
Teekay LNG | Bahrain LNG Joint Venture    
Long-term Purchase Commitment [Line Items]    
Equity method investment, ownership interest 30.00%  
Teekay LNG | Bahrain LNG Joint Venture | LNG receiving and regasification terminal    
Long-term Purchase Commitment [Line Items]    
Secured financing $ 34,000,000  
Undrawn amount $ 10,000,000