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Segment Reporting - Revenue and Income from Vessel Operations by Segment - Intersegment Revenue (Detail) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
May 31, 2017
Aug. 31, 2014
Segment Reporting Information [Line Items]            
Revenues $ (500,781) $ (547,639) $ (1,558,209) $ (1,776,366)    
Intersegment Eliminations            
Segment Reporting Information [Line Items]            
Revenues 18,507 23,400 60,280 71,952    
Teekay Offshore | Intersegment Eliminations            
Segment Reporting Information [Line Items]            
Revenues 9,211 13,554 33,429 38,472    
Teekay LNG | Liquefied Gas Carriers | Intersegment Eliminations            
Segment Reporting Information [Line Items]            
Revenues 9,296 9,429 26,851 28,075    
Teekay Tankers            
Segment Reporting Information [Line Items]            
Ownership percentage         50.00%  
Initial ownership percentage           50.00%
Teekay Tankers | Conventional Tankers | Intersegment Eliminations            
Segment Reporting Information [Line Items]            
Revenues 0 417 0 5,405    
Teekay Parent            
Segment Reporting Information [Line Items]            
Revenues (72,022) (77,832) (195,883) (258,662)    
Teekay Parent | Conventional Tankers | Intersegment Eliminations            
Segment Reporting Information [Line Items]            
Revenues $ 0 $ 0 $ 0 $ 0