Stock-based compensation - Narrative (Details) - USD ($) $ in Millions |
3 Months Ended | 9 Months Ended |
|---|---|---|
Apr. 30, 2023 |
Oct. 31, 2023 |
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| Performance Restricted Stock Units | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Performance units awards (in shares) | 270,966 | |
| Grant date fair value | $ 23.9 | |
| Performance Restricted Stock Units | Minimum | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Award vesting rights percentage (as a percent) | 0.00% | |
| Performance Restricted Stock Units | Maximum | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Award vesting rights percentage (as a percent) | 200.00% | |
| Incentive Plan | ||
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | ||
| Number of shares authorized (in shares) | 2,600,000 | |
| Percentage of capital stock (as a percent) | 3.00% | |
| Shares available for grant under incentive plan (in shares) | 11,500,000 |
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- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Additional Shares Available For Grants, Percentage Of Capital Stock Outstanding, Percentage No definition available.
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- Definition Share-Based Compensation Arrangement By Share-based Payment Award, Equity Instruments Other Than Options, Grants In Period, Fair Value No definition available.
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). 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 Number of shares authorized for issuance under share-based payment arrangement. Reference 1: http://www.xbrl.org/2003/role/exampleRef
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Percentage of vesting of award under share-based payment arrangement. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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