| Summary of significant accounting policies (Details) | 6 Months Ended | |
|---|---|---|
| Aug. 03, 2024 | Jul. 29, 2023 | |
| Summary of significant accounting policies | ||
| Fiscal quarter | 91 days | 91 days | 
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- References No definition available. 
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- Definition Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. No definition available. 
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