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Related Party Transactions (Detail) - USD ($)
$ in Millions
12 Months Ended 21 Months Ended
Jan. 13, 2022
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2020
Dec. 31, 2022
Sep. 30, 2018
Equity-accounted joint ventures | LNG Carriers | Income (loss) from Discontinued Operation            
Related Party Transaction [Line Items]            
Revenue from related parties   $ 82.8 $ 78.3      
Seapeak | Teekay Lng Marubeni Joint Venture [Member]            
Related Party Transaction [Line Items]            
Equity method investment, ownership interest         52.00%  
Seapeak | Teekay Lng Marubeni Joint Venture [Member] | Time-Charter Hire Expense [Member]            
Related Party Transaction [Line Items]            
Related Party Transaction, Expenses from Transactions with Related Party $ 0.8 $ 23.5 $ 23.6      
Teekay Lng Marubeni Joint Venture [Member] | Seapeak            
Related Party Transaction [Line Items]            
Lessee, Operating Lease, Extension Of Term Of Contract       21 months    
Lessee, Operating Lease, Term of Contract           2 years