Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Income (Loss) Per Share

	Year Ended December 31,
	2019 $		2018 $		2017 $
Net loss attributable to shareholders of Teekay Corporation for basic loss per share	(310,577	)	(79,237	)	(163,276	)
Reduction in net earnings due to dilutive impact of stock-based compensation in Teekay LNG, Altera and Teekay Tankers and stock purchase warrants in Altera	—		—		(90	)
Net loss attributable to shareholders of Teekay Corporation for diluted loss per share	(310,577	)	(79,237	)	(163,366	)
Weighted average number of common shares	100,719,224		99,670,176		86,335,473
Dilutive effect of stock-based compensation	—		—		—
Common stock and common stock equivalents	100,719,224		99,670,176		86,335,473
Loss per common share - basic and diluted	(3.08	)	(0.79	)	(1.89	)