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Equity-Accounted Joint Ventures - Pan Union Joint Venture - Additional Information (Details)
$ in Millions
Dec. 31, 2019
USD ($)
vessel
Dec. 31, 2018
USD ($)
Schedule of Equity Method Investments [Line Items]    
Ownership percentage (in percentage) 100.00%  
Pan Union Joint Venture    
Schedule of Equity Method Investments [Line Items]    
Difference between carrying amount and book value | $ $ 10.5 $ 11.0
Pan Union Joint Venture | Shipbuilding supervision and crew training services | LNG Carriers | 30% Ownership    
Schedule of Equity Method Investments [Line Items]    
Ownership percentage (in percentage) 30.00%  
Pan Union Joint Venture | Shipbuilding supervision and crew training services | LNG Carriers | 20% Ownership    
Schedule of Equity Method Investments [Line Items]    
Ownership percentage (in percentage) 20.00%  
Teekay LNG | Pan Union Joint Venture | Shipbuilding supervision and crew training services | LNG Carriers | 30% Ownership    
Schedule of Equity Method Investments [Line Items]    
Number of vessels 2  
Teekay LNG | Pan Union Joint Venture | Shipbuilding supervision and crew training services | LNG Carriers | 20% Ownership    
Schedule of Equity Method Investments [Line Items]    
Number of vessels 2