Net Earnings Per Share

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Net Earnings Per Share

Net (Loss) Earnings Per Share

Net (loss) earnings per share were computed as follows:

	Three months ended   September 30,				Nine months ended   September 30,
	2020		2019		2020		2019
	(in millions, except per share amounts)
Net (loss) earnings attributable to common stockholders	$	(28)	$	65	$	230	$	438
Basic (loss) earnings per common share:
Weighted-average common shares outstanding	213.9		219.0		215.0		221.2
Net (loss) earnings attributable to common stockholders	$	(0.13)	$	0.29	$	1.07	$	1.98
Diluted (loss) earnings per common share:
Weighted-average common shares outstanding	213.9		219.0		215.0		221.2
Dilutive common shares—stock-based awards	—		1.7		0.3		1.3
Diluted weighted-average shares outstanding	213.9		220.7		215.3		222.5
Net (loss) earnings attributable to common stockholders	$	(0.13)	$	0.29	$	1.07	$	1.97

Diluted earnings per share is calculated using weighted-average common shares outstanding, including the dilutive effect of stock-based awards as determined under the treasury stock method. In the computation of diluted earnings per common share, potentially dilutive stock-based awards are excluded if the effect of their inclusion is anti-dilutive. Shares for anti-dilutive stock-based awards not included in the computation of diluted earnings per common share were 3.1 million and 3.3 million in the three and nine months ended September 30, 2020, respectively, and 1.4 million and 1.5 million in the three and nine months ended September 30, 2019, respectively.