Share-Based Compensation

6 Months Ended

Jun. 30, 2019

Share-based Payment Arrangement [Abstract]

The Company recognized $15 million and $34 million of share-based compensation expense during the three and six months ended June 30, 2019, respectively, and $17 million and $36 million of share-based compensation expense during the three and six months ended June 30, 2018, respectively. The Company’s annual grant of share-based awards generally occurs in the first quarter. During the six months ended June 30, 2019 and 2018, stock options to purchase 1.7 million and 1.9 million shares, respectively, were exercised.

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



	Six Months Ended June 30,
	2019			2018
	Shares Granted (In thousands)	Weighted-Average Grant Date Fair Value		Shares Granted (In thousands)	Weighted-Average Grant Date Fair Value
Stock options	1,171	$	28.43	1,265	$	22.43
Restricted stock units	371	84.84		501	70.14
Performance share units	—	—		165	75.39