Net income (loss) per common share

12 Months Ended

Dec. 31, 2020

Net income (loss) per common share

Earnings per share

22. NET INCOME (LOSS) PER COMMON SHARE

The following table includes the calculation of basic and diluted net income (loss) per common share:

	Year Ended December 31,
	2020		2019			2018
(Loss) income from continuing operations	$	(46)	$	83	$	(873)
Income (loss) from discontinued operations, net of tax		349		26		(377)
Net income (loss)	$	303	$	109	$	(1,250)
Weighted average number of common shares outstanding-basic		60.7		59.6		58.1
Weighted dilutive effect of equity awards		—		0.6		—
Weighted average number of common shares outstanding-diluted		60.7		60.2		58.1
Basic net income (loss) per common share:
(Loss) income from continuing operations	$	(0.76)	$	1.39	$	(15.03)
Income (loss) from discontinued operations, net of tax		5.75		0.44		(6.49)
Basic net income (loss) per common share	$	4.99	$	1.83	$	(21.52)
Diluted net income (loss) per common share:
(Loss) income from continuing operations	$	(0.76)	$	1.38	$	(15.03)
Income (loss) from discontinued operations, net of tax		5.75		0.43		(6.49)
Diluted net income (loss) per common share	$	4.99	$	1.81	$	(21.52)

For the years ended December 31, 2020, 2019, and 2018 approximately 4 million, 2 million and 3 million awards, respectively, were excluded from the diluted weighted average number of ordinary common shares outstanding calculation because their effect would have been anti-dilutive.