Net Income Per Share (Tables)

3 Months Ended

Mar. 31, 2019

Earnings Per Share [Abstract]

Reconciliation of earnings attributable to common stockholders, basic and diluted

The components of basic and diluted net income per share attributable to common stockholders are as follows:

	Three Months Ended March 31,
	2019			2018
	(in millions)
Net income attributable to common stockholders	$	350		$	178
Participating share-based earnings	(2		)	(1		)
Basic and diluted net income attributable to common stockholders	$	348		$	177