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Retirement plans - Narrative (Details) £ in Millions, $ in Millions | 3 Months Ended | 6 Months Ended | 24 Months Ended |
--- | --- | --- | --- | ---
Jul. 29, 2023 USD ($) | Apr. 29, 2023 USD ($) | Jul. 30, 2022 USD ($) | Apr. 30, 2022 USD ($) | Jul. 29, 2023 USD ($) | Jul. 30, 2022 USD ($) | Jul. 29, 2023 GBP (£) | Jul. 29, 2023 USD ($) | Jul. 29, 2021 employee
Defined Contribution Plan [Line Items] |  |  |  |  |  |  |  |  |
Number of pension scheme members | employee |  |  |  |  |  |  |  |  | 1,909
Pension scheme | Foreign Plan |  |  |  |  |  |  |  |  |
Defined Contribution Plan [Line Items] |  |  |  |  |  |  |  |  |
Pre-tax non-cash settlement charges | $ 0.0 | $ 0.2 | $ 0.9 | $ 131.9 | $ 0.2 | $ 132.8 |  |  |
Signet Group Limited | Pension scheme |  |  |  |  |  |  |  |  |
Defined Contribution Plan [Line Items] |  |  |  |  |  |  |  |  |
Contributions by employer |  |  |  |  |  |  | £ 15.0 | $ 20.1 |
Defined benefit plan, expected future employer contributions, amount | $ 1.0 |  |  |  | $ 1.0 |  |  | $ 1.0 |

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