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Long-Term Debt - Additional Information - Convertible Notes (Details)
Jan. 31, 2018
USD ($)
Jan. 26, 2018
USD ($)
$ / shares
Dec. 31, 2018
$ / shares
Convertible Debt | Convertible Senior Notes (5%) due January 15, 2023      
Debt Instrument [Line Items]      
Conversion rate   85.4701  
Principal amount | $   $ 1,000  
Conversion price (in dollars per share) | $ / shares   $ 11.70  
Premium on concurrent common stock offering price (as a percentage)   20.00%  
Sale of stock (in dollars per share) | $ / shares   $ 9.75  
Teekay Parent | Convertible Debt | Convertible Senior Notes (5%) due January 15, 2023      
Debt Instrument [Line Items]      
Debt instrument, principal amount | $   $ 125,000,000  
Debt interest rate   5.00%  
Net proceeds of convertible debt | $ $ 104,600,000 $ 104,600,000  
Debt term (in years) 5 years    
Remaining amount of net proceeds allocation to conversion feature | $   $ 16,100,000  
Common Stock | Convertible Debt | Convertible Senior Notes (5%) due January 15, 2023      
Debt Instrument [Line Items]      
Quarterly dividend (in dollars per share) | $ / shares   $ 0.055  
Common Stock | Teekay Parent      
Debt Instrument [Line Items]      
Sale of stock (in dollars per share) | $ / shares     $ 9.75