Share-Based Compensation

3 Months Ended

Mar. 31, 2022

Share-based Payment Arrangement [Abstract]

The Company recognized $61 million and $66 million of share-based compensation expense during the three months ended March 31, 2022 and 2021, respectively. The Company's share-based compensation awards are typically granted in the first quarter of the year, and may also occur throughout the year in conjunction with acquisitions of businesses. At March 31, 2022, the total remaining unrecognized compensation cost for unvested stock options, restricted stock units and awards and performance share units, net of estimated forfeitures, of $519 million is expected to be recognized over a weighted-average period of 2.3 years. During the three months ended March 31, 2022 and 2021, stock options to purchase 0.6 million and 1.6 million shares, respectively, were exercised.

A summary of stock option activity is as follows:



	Shares (In thousands)	Weighted-Average Exercise Price		Weighted-Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (In millions)
Stock options outstanding - December 31, 2021	10,229	$	56.36

Granted	—	—
Forfeited	(85)	111.67
Exercised	(639)	49.95
Stock options outstanding - March 31, 2022	9,505	$	56.29	4.00	$	444
Stock options exercisable - March 31, 2022	8,725	$	51.38	3.63	$	443

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


	Restricted Stock Units and Awards			Performance Share Units
	Shares (In thousands)	Weighted-Average Grant Date Fair Value		Shares (In thousands)	Weighted-Average Grant Date Fair Value
Units and awards - December 31, 2021	5,074	$	101.09	1,392	$	96.32

Granted	3,125	92.99		285	96.91
Forfeited	(204)	106.39		(45)	103.34
Vested	(1,541)	102.28		—	—
Units and awards - March 31, 2022	6,454	$	96.69	1,632	$	96.49