Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Millions	3 Months Ended	9 Months Ended
	Oct. 31, 2023 USD ($) $ / shares shares	Oct. 31, 2023 USD ($) vote $ / shares shares	Oct. 17, 2023 shares	Oct. 16, 2023 shares	Jan. 31, 2023 shares	Oct. 31, 2022 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares) | shares			810,000,000	1,000,000,000
Common stock, shares outstanding (in shares) | shares	160,965,687	160,965,687
Unrecognized compensation cost related to unvested stock options granted | $	$ 389	$ 389
Intrinsic value of options exercised | $	17	$ 343
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of unvested stock (in years)		2 years 4 months 24 days
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average period of unvested stock (in years)		1 year 6 months
Unrecognized compensation cost related to unvested RSUs | $	181	$ 181
Total intrinsic value, vested | $	$ 60	$ 166
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average grant date fair value of options granted (in usd per share) | $ / shares	$ 94.69	$ 81.06
Class A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares) | shares					800,000,000	810,000,000
Vote per common share | vote		1
Common stock, shares outstanding (in shares) | shares	160,965,687	160,965,687			143,693,009