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Retirement plans - Narrative (Details) £ in Millions, $ in Millions	3 Months Ended							9 Months Ended		27 Months Ended
	Feb. 03, 2024 GBP (£)	Feb. 03, 2024 USD ($)	Oct. 28, 2023 USD ($)	Apr. 29, 2023 USD ($)	Oct. 29, 2022 USD ($)	Jul. 30, 2022 USD ($)	Apr. 30, 2022 USD ($)	Oct. 28, 2023 USD ($)	Oct. 29, 2022 USD ($)	Oct. 28, 2023 GBP (£)	Oct. 28, 2023 USD ($)	Jul. 29, 2021 employee
Defined Benefit Plan Disclosure [Line Items]
Number of pension scheme members | employee												1,909
Pension plan | Signet Group Limited
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer										£ 15.0	$ 20.1
Pension plan | Subsequent Event | Signet Group Limited
Defined Benefit Plan Disclosure [Line Items]
Contributions by employer	£ 1.1	$ 1.4
Foreign Plan | Pension plan
Defined Benefit Plan Disclosure [Line Items]
Pension settlement loss | $			$ 0.0	$ (0.2)	$ (0.9)	$ 0.0	$ (131.9)	$ (0.2)	$ (132.8)

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