Earnings Per Share (Tables)

9 Months Ended

Sep. 30, 2019

Earnings Per Share [Abstract]

Schedule of Reconciliation of Numerators and Denominators Used to Calculate Basic EPS and Diluted EPS

The following table reconciles the numerators and denominators used to calculate basic EPS and diluted EPS (in millions, except per share data):

	Three months ended September 30,				Nine months ended September 30,
	2019		2018		2019		2018
Net income	$	149	$	167	$	497	$	492
Weighted average shares of common stock outstanding		120		130		123		135
Dilutive effect of stock-based awards		1		1		1		—
Diluted weighted average shares of common stock outstanding		121		131		124		135
Basic earnings per share attributable to common stockholders	$	1.24	$	1.28	$	4.04	$	3.66
Diluted earnings per share attributable to common stockholders	$	1.23	$	1.27	$	4.01	$	3.64