Stockholders' Equity (Tables)

12 Months Ended

Jan. 31, 2023

Share-Based Payment Arrangement [Abstract]

Schedule of Stock Option Activity

A summary of stock option activity for the fiscal year ended January 31, 2023 is as follows: 

	Number of shares	Weighted average exercise price		Weighted average remaining contractual term (in years)	Aggregate intrinsic value (in millions)
Options outstanding at January 31, 2022	12,090,522	$	77.89	4.6	$	1,964
Options granted	3,267,206	205.48
Options exercised	(3,421,303)	12.74
Options forfeited/cancelled	(433,016)	209.53
Options outstanding at January 31, 2023	11,503,409	$	128.62	5.9	$	705
Options vested and exercisable at January 31, 2023	5,370,570	$	74.10	3.9	$	549
Options vested and exercisable at January 31, 2023 and expected to vest thereafter	11,503,409	$	128.62	5.9	$	705

Schedule of Weighted-Average Assumptions Used to Estimate Grant Date Fair Value of Options Granted

The following table presents the weighted-average assumptions used to estimate the grant date fair value of options granted during the periods presented:

	Fiscal year ended January 31,
	2023			2022			2021
Volatility	37%	-	40%	37%	-	39%	39%	-	42%
Expected term (in years)	6.00	-	7.00	6.25			6.25	-	7.25
Risk-free interest rate	1.90%	-	4.20%	0.70%	-	1.60%	0.33%	-	1.43%
Dividend yield	—%			—%			—%

Schedule of Restricted Stock Unit (RSU) Activity

A summary of RSU activity for the fiscal year ended January 31, 2023 is as follows:

	Unreleased restricted stock units	Weighted  average grant date fair value
Balance at January 31, 2022	619,388	$	175.23
RSUs granted	1,548,166	204.88
RSUs vested	(968,004)	198.24
RSUs forfeited / cancelled	(95,871)	200.97
Balance at January 31, 2023	1,103,679	194.36