Revenue recognition - Unamortized Deferred Selling Costs (Details) - USD ($) $ in Millions	Jul. 29, 2023	Jan. 28, 2023	Jul. 30, 2022
Revenue from Contract with Customer [Abstract]
Other current assets	$ 28.0	$ 29.2	$ 27.4
Other assets	83.0	85.4	86.8
Total deferred ESP selling costs	$ 111.0	$ 114.6	$ 114.2

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 340
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147479483/340-40-50-3

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Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as current.

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- Definition

Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer; classified as noncurrent.

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