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Equity Compensation - Summary of ESPP Activity (Details) - ESPP - 1998 Employee Qualified Stock Purchase Plan - $ / shares shares in Thousands | 6 Months Ended
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Jul. 31, 2022 | Jul. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |
Issued shares (in shares) | 377 | 490
Average price of issued shares (in usd per share) | $ 173.83 | $ 128.02
Weighted average grant date fair value of shares granted under the ESPP (in usd per share) | $ 69.19 | $ 91.17

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