Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, from an acquisition.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Amount of impairment loss resulting from write-down of assets, excluding financial assets and goodwill, lacking physical substance and having a projected indefinite period of benefit to fair value.

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Goodwill and intangibles - Additional Information (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
	Mar. 29, 2021	Jul. 31, 2021	Aug. 01, 2020	May 02, 2020	Jul. 31, 2021	Aug. 01, 2020
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment		$ 0.0	$ 0.0		$ 0.0	$ 10.7
Indefinite-lived intangible asset impairment		$ 0.0	$ 0.0		0.0	$ 83.3
North America
Finite-Lived Intangible Assets [Line Items]
Goodwill impairment				$ 10.7
Goodwill acquired					$ 7.1
North America \| Rocksbox
Finite-Lived Intangible Assets [Line Items]
Definite-lived intangible assets acquired	$ 11.5
Goodwill acquired	$ 7.1
Acquired finite-lived intangible assets, weighted average useful life	8 years
North America \| Certain Zales Trade Names
Finite-Lived Intangible Assets [Line Items]
Indefinite-lived intangible asset impairment				$ 83.3