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Goodwill and intangibles - Additional Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | ---
Oct. 31, 2020 | May 02, 2020 | Nov. 02, 2019 | Aug. 03, 2019 | Oct. 31, 2020 | Nov. 02, 2019 | Feb. 01, 2020
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill and intangible asset impairment |  | $ 94.0 |  |  |  |  |
Goodwill impairment | $ 0.0 |  | $ 0.0 | $ 47.7 | $ 10.7 | $ 47.7 |
Indefinite-lived intangible asset impairment | $ 0.0 |  | $ 0.0 |  | 83.3 | $ 0.0 |
Zales |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill impairment |  |  |  | 35.2 |  |  |
R2Net Inc. |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill impairment |  |  |  | $ 12.5 |  |  |
North America |  |  |  |  |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |  |  |  |  |
Goodwill impairment |  | 10.7 |  |  | $ 10.7 |  | $ 47.7
Indefinite-lived intangible asset impairment |  | $ 83.3 |  |  |  |  |

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- Definition Total loss recognized during the period from the impairment of goodwill plus the loss recognized in the period resulting from the impairment of the carrying amount of intangible assets, other than goodwill. + References No definition available. + Details
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