Share-based compensation - Schedule of Share-Based Compensation Expense and Associated Tax Benefits (Details) - USD ($) $ in Millions	12 Months Ended
Jan. 28, 2023	Jan. 29, 2022	Jan. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Income tax benefit	$ (5.2)	$ (5.9)	$ (3.6)
Selling, General and Administrative Expenses
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 42.0	$ 45.8	$ 14.5

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (h)(1)(i)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

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- Definition

Amount of tax benefit for recognition of expense of award under share-based payment arrangement.

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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.

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