Acquisitions - Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Oct. 29, 2022	Aug. 19, 2022	Jan. 29, 2022	Nov. 17, 2021	Oct. 30, 2021
Business Acquisition [Line Items]
Goodwill	$ 752.3		$ 484.6		$ 245.0
Diamonds Direct
Business Acquisition [Line Items]
Inventories				$ 229.1
Property, plant and equipment				32.3
Operating lease right-of-use assets				56.9
Intangible assets				126.0
Other assets				6.8
Identifiable assets acquired				451.1
Accounts payable				46.8
Deferred revenue				36.0
Operating lease liabilities				57.6
Deferred taxes				31.2
Other liabilities				27.6
Liabilities assumed				199.2
Identifiable net assets acquired				251.9
Goodwill				251.2
Net assets acquired				$ 503.1
Blue Nile
Business Acquisition [Line Items]
Inventories		$ 90.2
Property, plant and equipment		39.5
Operating lease right-of-use assets		39.1
Intangible assets		102.0
Other assets		10.1
Identifiable assets acquired		280.9
Accounts payable		73.2
Deferred revenue		14.2
Operating lease liabilities		39.1
Other liabilities		17.0
Liabilities assumed		143.5
Identifiable net assets acquired		137.4
Goodwill		258.5
Net assets acquired		$ 395.9