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Share-based compensation - Schedule of Significant Assumptions used to Estimate Fair Value of Awards under Omnibus Plan (Details) - Restricted Stock, Restricted Stock Units and Common Shares - Omnibus Plan - $ / shares | 12 Months Ended
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Jan. 28, 2023 | Jan. 29, 2022 | Jan. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share price (usd per share) | $ 77.39 | $ 60.65 | $ 11.10
Expected term | 2 years 10 months 24 days | 2 years 10 months 24 days | 2 years 10 months 24 days
Dividend yield | 3.00% | 4.30% | 5.50%
Fair value (usd per share) | $ 71.19 | $ 53.58 | $ 9.37

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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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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. + References No definition available. + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d)(1) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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- Definition Price of a single share of a number of saleable stocks of a company. + References No definition available. + Details
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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. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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