Goodwill and Intangibles - Composition of Finite-Lived Intangibles (Details) - USD ($) $ in Millions	Jul. 30, 2022	Jan. 29, 2022	Nov. 17, 2021	Jul. 31, 2021
Intangible assets, net:
Gross carrying amount	$ 15.8	$ 15.8		$ 17.2
Accumulated amortization	(6.6)	(5.3)		(5.4)
Net carrying amount	9.2	10.5		11.8
Indefinite-lived intangible assets	303.6	303.7		177.9
Intangible assets, gross	319.4	319.5		195.1
Total intangible assets, net	312.8	314.2		189.7
Intangible liabilities, net
Gross carrying amount	(38.0)	(38.0)		(38.0)
Accumulated amortization	31.7	30.8		30.0
Total	$ (6.3)	$ (7.2)		$ (8.0)
Diamonds Direct \| Trade names
Indefinite-lived Intangible Assets [Line Items]
Intangible assets			$ 126.0

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