Net Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Summary of net 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