Retirement Plans - Narrative (Details) £ in Millions, $ in Millions					3 Months Ended			6 Months Ended		12 Months Ended
	Mar. 23, 2022 GBP (£)	Mar. 23, 2022 USD ($)	Aug. 04, 2021 GBP (£)	Aug. 04, 2021 USD ($)	Jul. 30, 2022 USD ($)	Apr. 30, 2022 USD ($)	Jul. 31, 2021 USD ($)	Jul. 30, 2022 USD ($)	Jul. 31, 2021 USD ($)	Jul. 30, 2022 GBP (£)	Jul. 30, 2022 USD ($)	Jul. 30, 2022 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 | $					$ 0.9	$ 131.9	$ 0.0	$ 132.8	$ 0.0
Signet Group Limited | Pension scheme
Defined Contribution Plan [Line Items]
Contributions by employer										£ 14.0	$ 18.9
Defined benefit plan, initial contribution amount			£ 7.0	$ 9.7
Additional contribution amount	£ 7.0	$ 9.2
Defined benefit plan, expected future employer contributions, amount										£ 2.0		$ 2.4