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Goodwill and Intangibles - Narrative (Details) - USD ($) $ in Millions		3 Months Ended
	Mar. 29, 2021	Apr. 30, 2022	Jan. 29, 2022	Nov. 17, 2021	May 01, 2021
Finite-Lived Intangible Assets [Line Items]
Goodwill		$ 486.4	$ 484.6		$ 244.9
Diamonds Direct
Finite-Lived Intangible Assets [Line Items]
Goodwill				$ 243.8
Diamonds Direct \| Trade names
Finite-Lived Intangible Assets [Line Items]
Intangible assets				$ 126.0
North America
Finite-Lived Intangible Assets [Line Items]
Acquisitions		1.8
Goodwill		$ 486.4	$ 484.6
North America \| Rocksbox
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets acquired	$ 11.6
Acquisitions	$ 4.6
Acquired finite-lived intangible assets, weighted average useful life	8 years