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Income taxes - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Aug. 03, 2024	Jul. 29, 2023
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Impairment Losses, Amount	$ 166.0
Goodwill impairment	123.0
Excess tax benefit from share based compensation	$ 5.0	$ 7.7
Tax benefit due to reversal of foreign pension out of OCI		$ 4.1

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Effective Income Tax Rate Reconciliation, Reversal of Foreign Pension Out of Other Comprehensive Income, Amount

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Amount of difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying domestic federal statutory income tax rate to pretax income (loss) from continuing operation, attributable to expense for award under share-based payment arrangement. Excludes expense determined to be nondeductible upon grant or after for award under share-based payment arrangement.

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-SubTopic 10
-Name Accounting Standards Codification
-Section 50
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Amount of impairment loss from asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to nondeductible impairment loss.

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