Equity-based compensation - Valuation allowance of performance-based restricted stock units (Details) |
12 Months Ended | ||
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Jan. 31, 2024
$ / shares
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Jan. 31, 2023
$ / shares
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Jan. 31, 2022
$ / shares
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Weighted average fair market value of grants (in USD per share) | $ 29.08 | $ 26.79 | $ 46.60 |
| PSUs | |||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | |||
| Correlation coefficient | 0.5238 | 0.4957 | 0.3878 |
| Valuation date stock price (in USD per share) | $ 22.94 | $ 35.41 | $ 36.03 |
| Simulation term (in years) | 3 years | 3 years | 2 years 11 months 26 days |
| Volatility (as a percent) | 64.58% | 64.98% | 44.32% |
| Risk-free rate (as a percent) | 4.05% | 3.84% | 1.23% |
| Dividend yield (as a percent) | 0.00% | 0.00% | 0.00% |
| Weighted average fair market value of grants (in USD per share) | $ 36.42 | $ 56.52 | $ 48.47 |
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Correlation Coefficient No definition available.
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- Definition Agreed-upon price for the exchange of the underlying asset relating to the share-based payment award. No definition available.
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Details
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