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Revenue recognition - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
May 02, 2020 | May 04, 2019
Disaggregation of Revenue [Line Items] |  |
Sales | $ 852.1 | $ 1,431.7
Bridal |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 342.2 | 643.3
Fashion |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 310.5 | 489.8
Watches |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 42.1 | 82.2
Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 157.3 | 216.4
Store |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 681.3 | 1,257.5
Kay |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 333.5 | 579.3
Zales |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 182.3 | 288.8
Jared |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 145.4 | 255.0
Piercing Pagoda |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 51.4 | 82.6
James Allen |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 43.8 | 52.0
Peoples |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 24.7 | 42.6
International segment |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 64.9 | 111.5
Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 6.1 | 19.9
E-commerce |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 164.7 | 154.3
Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 6.1 | 19.9
North America |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 781.1 | 1,300.3
North America | Bridal |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 314.1 | 594.7
North America | Fashion |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 297.9 | 467.4
North America | Watches |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 24.6 | 48.2
North America | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 144.5 | 190.0
North America | Store |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 631.9 | 1,157.3
North America | Kay |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 333.5 | 579.3
North America | Zales |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 182.3 | 288.8
North America | Jared |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 145.4 | 255.0
North America | Piercing Pagoda |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 51.4 | 82.6
North America | James Allen |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 43.8 | 52.0
North America | Peoples |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 24.7 | 42.6
North America | International segment |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
North America | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
North America | E-commerce |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 149.2 | 143.0
North America | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 64.9 | 111.5
International segment | Bridal |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 28.1 | 48.6
International segment | Fashion |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 12.6 | 22.4
International segment | Watches |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 17.5 | 34.0
International segment | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 6.7 | 6.5
International segment | Store |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 49.4 | 100.2
International segment | Kay |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment | Zales |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment | Jared |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment | Piercing Pagoda |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment | James Allen |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment | Peoples |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment | International segment |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 64.9 | 111.5
International segment | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
International segment | E-commerce |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 15.5 | 11.3
International segment | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 6.1 | 19.9
Other | Bridal |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Fashion |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Watches |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 6.1 | 19.9
Other | Store |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Kay |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Zales |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Jared |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Piercing Pagoda |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | James Allen |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Peoples |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | International segment |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 6.1 | 19.9
Other | E-commerce |  |
Disaggregation of Revenue [Line Items] |  |
Sales | 0.0 | 0.0
Other | Other |  |
Disaggregation of Revenue [Line Items] |  |
Sales | $ 6.1 | $ 19.9

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