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Acquisitions - Additional Information (Detail)			12 Months Ended
Acquisitions - Additional Information (Detail)	Nov. 17, 2021 USD ($) retailLocation	Mar. 29, 2021 USD ($)	Jan. 29, 2022 USD ($)	Jan. 30, 2021 USD ($)	Feb. 01, 2020 USD ($)
Business Acquisition [Line Items]
Cash consideration			$ 515,800,000	$ 0	$ 0
Rocksbox
Business Acquisition [Line Items]
Cash consideration		$ 14,600,000
Acquisition related costs			1,400,000
Diamonds Direct USA Inc.
Business Acquisition [Line Items]
Cash consideration	$ 501,200,000
Acquisition related costs			$ 5,000,000
Cash acquired from acquisition	$ 14,200,000
Number of retail locations \| retailLocation	22
Goodwill, expected tax deductible amount	$ 0
Diamonds Direct USA Inc. \| Trade names
Business Acquisition [Line Items]
Intangible assets	$ 126,000,000