Share-Based Compensation

3 Months Ended

Mar. 31, 2018

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

The Company recognized $19 million and $16 million of share-based compensation expense during the three months ended March 31, 2018 and 2017, respectively. The Company’s annual grant of share-based awards generally occurs in the first quarter. During the three months ended March 31, 2018 and 2017, stock options to purchase 1.6 million and 1.4 million shares, respectively, were exercised.

A summary of stock option, restricted stock unit and performance share unit grant activity is as follows:



	Three Months Ended March 31,
	2018			2017
	Shares Granted (In thousands)	Weighted-Average Grant Date Fair Value		Shares Granted (In thousands)	Weighted-Average Grant Date Fair Value
Stock options	1,193	$	22.40	1,296	$	18.60
Restricted stock units	374	69.77		511	56.82
Performance share units	165	75.39		110	56.91