Equity Awards (Tables)

9 Months Ended

Sep. 30, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

A summary of stock option activity for the nine months ended September 30, 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
Granted (1)	54	$	77.96
Exercised	(24)	$	16.46		$	11
Outstanding at June 30, 2021	484	$	147.70
Exercised	(98)	$	48.26		$	55
Outstanding at September 30, 2021	386	$	172.85	5.7	$	174
Vested and expected to vest as of September 30, 2021	352	$	165.12	5.5	$	161
Vested and exercisable as of September 30, 2021	205	$	74.71	3.3	$	112

(1) Includes awards assumed in business combinations

Schedule of Restricted Stock Unit Activity

A summary of RSU activity for the nine months ended September 30, 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 (1)	2,004	$	577.94
Vested	(1,060)	$	226.59	$	620
Forfeited	(259)	$	330.43
Outstanding at March 31, 2021	8,047	$	352.48
Granted (1)	378	$	500.01
Vested	(932)	$	274.86	$	435
Forfeited	(188)	$	341.70
Outstanding at June 30, 2021	7,305	$	370.32
Granted	280	$	598.98
Vested	(866)	$	289.07	$	507
Forfeited	(192)	$	359.57
Outstanding at September 30, 2021	6,527	$	391.24	$	4,062

    

(1) Includes awards assumed in business combinations