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Stockholders' Equity (Tables) | 9 Months Ended
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Oct. 31, 2021
Equity [Abstract] |
Summary of Information Related to Restricted Stock Units Activity | A summary of information related to RSU activity during the nine months ended October 31, 2021, is as follows (in thousands, except per share data):
| Number of Shares |  | Weighted-Average Grant Date Fair Value
Balance as of January 31, 2021 | 13,168 |  |  | $ | 154.90 |
RSUs granted | 5,651 |  |  | 257.78 |
RSUs vested | (5,103) |  |  | 147.99 |
RSUs forfeited | (1,101) |  |  | 181.72 |
Balance as of October 31, 2021 | 12,615 |  |  | 201.44 |
Summary of Information Related to Stock Option Activity | A summary of information related to stock option activity during the nine months ended October 31, 2021, is as follows (in millions, except number of shares which are reflected in thousands and per share data):
| Outstanding Stock Options |  | Weighted-Average Exercise Price |  | Aggregate Intrinsic Value
Balance as of January 31, 2021 | 1,260 |  |  | $ | 13.55 |  |  | $ | 270 |
Stock options exercised | (671) |  |  | 9.01 |  |  |
Stock options canceled | (13) |  |  | 35.55 |  |  |
Balance as of October 31, 2021 | 576 |  |  | 18.34 |  |  | 156 |
Vested and expected to vest as of October 31, 2021 | 575 |  |  | 18.33 |  |  | 156 |
Exercisable as of October 31, 2021 | 545 |  |  | 17.23 |  |  | 149 |

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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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 -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901 + Details
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