Equity Awards (Tables)

3 Months Ended

Mar. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

A summary of stock option activity for the three months ended March 31, 2021 was as follows:

	Number of Shares	Weighted- Average Exercise Price Per Share		Weighted- Average Remaining Contractual Term	Aggregate Intrinsic Value
	(in thousands)			(in years)	(in millions)
Outstanding at December 31, 2020	522	$	107.14
Granted	36	$	587.91
Exercised	(104)	$	88.28		$	47
Outstanding at March 31, 2021	454	$	149.23	5.0
Vested and expected to vest as of March 31, 2021	429	$	137.40	4.7	$	158
Vested and exercisable as of March 31, 2021	298	$	50.86	2.9	$	134

Schedule of Restricted Stock Unit Activity

A summary of RSU activity for the three months ended March 31, 2021 was as follows:

	Number of Shares	Weighted-Average Grant-Date Fair Value Per Share		Aggregate Intrinsic Value
	(in thousands)			(in millions)
Outstanding at December 31, 2020	7,362	$	274.23
Granted	2,004	$	577.94
Vested	(1,060)	$	226.59	$	620
Forfeited	(259)	$	330.43
Outstanding at March 31, 2021	8,047	$	352.48