Stockholders’ Equity and Equity Incentive Plans - Additional Information (Details)	3 Months Ended	9 Months Ended
	Oct. 31, 2022 USD ($) plan $ / shares shares	Oct. 31, 2022 USD ($) plan $ / shares shares	Feb. 28, 2022 USD ($)	Jan. 31, 2022 $ / shares shares	Apr. 30, 2019 $ / shares shares
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 0.001	$ 0.001		$ 0.001
Stock repurchase plan, authorized amount (up to)			$ 1,000,000,000
Stock repurchased and retired during period (in shares) | shares	6,955,529	11,044,500
Stock repurchased and retired during period	$ 564,800,000	$ 990,800,000
Remaining authorized amount	$ 9,200,000	$ 9,200,000
Number of equity incentive plans | plan	2	2
Stock Options
Class of Stock [Line Items]
Unrecognized stock-based compensation expenses related to outstanding unvested stock options	$ 3,500,000	$ 3,500,000
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period (in years)		4 months 24 days
RSUs
Class of Stock [Line Items]
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period (in years)		2 years 9 months 18 days
Unrecognized stock-based compensation expenses	2,899,400,000	$ 2,899,400,000
Employee Stock Purchase Plan
Class of Stock [Line Items]
Unrecognized stock-based compensation excepted to be recognized over a weighted-average period (in years)		1 year 3 months 18 days
Unrecognized stock-based compensation expenses	$ 66,500,000	$ 66,500,000
Class A Common Stock
Class of Stock [Line Items]
Common stock, authorized (in shares) | shares	2,000,000,000	2,000,000,000		2,000,000,000
Class A Common Stock | Initial Public Offering
Class of Stock [Line Items]
Common stock, authorized (in shares) | shares					2,000,000,000
Common stock, par value (in dollars per share) | $ / shares					$ 0.001
Class B Common Stock
Class of Stock [Line Items]
Common stock, authorized (in shares) | shares	300,000,000	300,000,000		300,000,000
Class B Common Stock | Initial Public Offering
Class of Stock [Line Items]
Common stock, authorized (in shares) | shares					300,000,000
Common stock, par value (in dollars per share) | $ / shares					$ 0.001