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Stockholders' Equity (Tables) | 3 Months Ended
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Apr. 30, 2024
Share-Based Payment Arrangement [Abstract] |
Schedule of Stock Option Activity | A summary of stock option activity for the three months ended April 30, 2024 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, 2024 | 11,147,810 |  |  | $ | 157.20 |  |  | 6.7 |  | $ | 626 |
Options granted | 1,914,837 |  |  | 214.82 |  |  |  |  |
Options exercised | (178,777) |  |  | 159.05 |  |  |  |  |
Options forfeited/cancelled | (132,323) |  |  | 208.61 |  |  |  |  |
Options outstanding at April 30, 2024 | 12,751,547 |  |  | $ | 165.33 |  |  | 6.9 |  | $ | 551 |
Options vested and exercisable at April 30, 2024 | 6,180,088 |  |  | $ | 136.47 |  |  | 5.4 |  | $ | 441 |
Options vested and exercisable at April 30, 2024 and expected to vest thereafter | 12,751,547 |  |  | $ | 165.33 |  |  | 6.9 |  | $ | 551 |
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:
|  | Three months ended April 30, |  |
|  | 2024 |  | 2023 |  |  |  |
Volatility |  | 40% | - | 41% |  | 39% | - | 40% |  |  |  |  |  |  |  |
Expected term (in years) |  | 6.25 | - | 7.00 |  | 6.25 | - | 7.00 |  |  |  |  |  |  |  |
Risk-free interest rate |  | 4.12% | - | 4.65% |  | 3.34% | - | 3.99% |  |  |  |  |  |  |  |
Dividend yield |  | —% |  | —% |  |  |  |
Schedule of Restricted Stock Unit (RSU) Activity | A summary of restricted stock unit (RSU) activity for the three months ended April 30, 2024 is as follows:
| Unreleased restricted stock units |  | Weighted average grant date fair value
Balance at January 31, 2024 | 1,011,731 |  |  | $ | 192.77 |
RSUs granted | 882,706 |  |  | 214.83 |
RSUs vested | (295,043) |  |  | 179.19 |
RSUs forfeited/cancelled | (15,610) |  |  | 202.48 |
Balance at April 30, 2024 | 1,583,784 |  |  | 207.50 |

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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- Definition Disclosure of the number and weighted-average grant date fair value for restricted stock and restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock and restricted stock units that were granted, vested, or forfeited during the year. + References No definition available. + Details
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