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Net Loss Per Share (Tables)
12 Months Ended
Dec. 31, 2020
Earnings Per Share [Abstract]  
Schedule of Income (Loss) Per Share
 Year Ended December 31,
2020
$
2019
$
2018
$
Net loss attributable to the shareholders of Teekay Corporation – basic and diluted(82,933)(310,577)(79,237)
Weighted average number of common shares 101,053,095 100,719,224 99,670,176 
Common stock and common stock equivalents 101,053,095 100,719,224 99,670,176 
Loss per common share - basic and diluted(0.82)(3.08)(0.79)