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Common shares, treasury shares, and dividends -Schedule of Dividends (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jan. 28, 2023 | Oct. 29, 2022 | Jul. 30, 2022 | Apr. 30, 2022 | Jan. 29, 2022 | Oct. 30, 2021 | Jul. 31, 2021 | May 01, 2021 | Jan. 30, 2021 | Oct. 31, 2020 | Aug. 01, 2020 | May 02, 2020 | Jan. 28, 2023 | Jan. 29, 2022 | Jan. 30, 2021
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash dividend per share (usd per share) | $ 0.20 | $ 0.20 | $ 0.20 | $ 0.20 | $ 0.18 | $ 0.18 | $ 0.18 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0.80 | $ 0.54 | $ 0
Total dividends | $ 9.0 | $ 9.2 | $ 9.2 | $ 9.3 | $ 9.0 | $ 9.5 | $ 9.5 | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0 | $ 36.7 | $ 28.0 | $ 0.0
Dividends, preferred stock, cash |  |  |  |  |  |  |  |  |  |  |  |  | 34.5 | 34.5 | 33.5
Series A Redeemable Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends, preferred stock, cash | 8.2 | $ 8.2 | $ 8.2 | $ 8.2 | 8.2 | $ 8.3 | $ 8.2 | $ 8.2 |  |  |  |  | 32.8 | 32.9 |
Dividends, preferred stock, paid-in-kind |  |  |  |  |  |  |  |  | $ 8.1 | $ 8.0 | $ 7.9 | $ 7.8 |  |  | $ 31.8
Accrued Expenses And Other Current Liabilities | Common shares at par value |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends payable, current | 9.0 |  |  |  | 9.0 |  |  |  |  |  |  |  | 9.0 | 9.0 |
Accrued Expenses And Other Current Liabilities | Series A Redeemable Convertible Preferred Stock |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Dividends payable, current | $ 8.2 |  |  |  | $ 8.2 |  |  |  |  |  |  |  | $ 8.2 | $ 8.2 |

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