Stockholders' Equity - Additional Information (Details) $ / shares in Units, $ in Millions	12 Months Ended
	Jan. 31, 2024 USD ($) vote $ / shares shares	Jan. 31, 2023 $ / shares shares	Jan. 31, 2022 $ / shares	Oct. 17, 2023 shares	Oct. 16, 2023 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)				810,000,000	1,000,000,000
Common stock, shares outstanding (in shares)	161,260,172
Options outstanding (in shares)	11,147,810	11,503,409
Unrecognized compensation cost related to unvested stock options granted | $	$ 343
Share price (in usd per share) | $ / shares	$ 207.41
Intrinsic value of options exercised | $	$ 353
2012 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	0
2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)	0
Number of additional shares authorized (in shares)	13,750,000
Common stock, shares outstanding, percentage	5.00%
Weighted-average grant date fair value of options granted (in usd per share) | $ / shares	$ 81.17	$ 88.25	$ 108.42
2013 Equity Incentive Plan | Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued in period (in shares)	7,912,230
2013 Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of additional shares authorized (in shares)	2,200,000
Common stock, shares outstanding, percentage	1.00%
Number of shares reserved for future issuance (in shares)	4,000,000
Number of shares authorized (in shares)	4,897,856
Percent of fair market value paid for shares	85.00%
Percentage of payroll deductions for shares acquired	15.00%
2013 Employee Stock Purchase Plan | Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued in period (in shares)	0
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Weighted average period of unvested stock (in years)	1 year 7 months 6 days
Unrecognized compensation cost related to unvested RSUs | $	$ 122
Total intrinsic value, vested | $	$ 223
Certain Restricted Stock Units | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Weighted average period of unvested stock (in years)	2 years 2 months 12 days
Stock Options | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Maximum | Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Maximum | Restricted Stock Units (RSUs) | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Maximum | Stock Options | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options exercisable period	10 years
Maximum | Certain Employee Stock Options | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	7 years
Minimum | Restricted Stock Units (RSUs) | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Minimum | Certain Employee Stock Options | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	5 years
Class A common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)	800,000,000	800,000,000
Vote per common share | vote	1
Common stock, shares outstanding (in shares)	161,260,172	143,693,009
Class A common stock | 2013 Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for issuance (in shares)	45,510,340
Class B common stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)	0	190,000,000
Common stock, shares outstanding (in shares)	0	14,551,598