Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Stockholders' Equity Note [Abstract]

Summary of Stock Option Activity

The following table summarizes the stock option activity under the Company’s plan for the quarter ended March 31, 2022:

	Weighted Average Remaining Contractual Life in Years		Options (In thousands)		Weighted- average grant date fair value		Aggregate Intrinsic Value (In millions)
Outstanding at January 1, 2022				500.0	$	39.26
Granted				176.2		45.05
Outstanding at March 31, 2022		8.3		676.2	$	40.77	$	2.3
Exercisable at March 31, 2022		7.5		241.3	$	35.87	$	1.4
Unvested and expected to vest at March 31, 2022		8.7		407.2	$	43.34	$	0.9

Summary of Restricted Stock Unit Activity

The following table summarizes the Restricted Stock Unit activity under the Company’s plan for the quarter ended March 31, 2022:

	Shares (In thousands)			Weighted- average grant date fair value		Aggregate Intrinsic Value (In millions)
Unvested at January 1, 2022		420.5		$	42.21
Granted		173.5			45.05
Vested		(90.4	)		38.72
Canceled/Forfeited		(1.9	)		44.15
Unvested at March 31, 2022		501.7		$	43.81	$	19.5

Summary of Performance Share Awards Activity

The following table summarizes the Performance Share Award activity under the Company’s plan for the quarter ended March 31, 2022:

	Shares (In thousands)			Weighted- average grant date fair value		Aggregate Intrinsic Value (In millions)
Unvested at January 1, 2022		286.5		$	40.23
Granted		81.6			45.45
Vested		(125.9	)		32.02
Unvested at March 31, 2022		242.2		$	46.64	$	9.4