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Shareholders' equity - Dividends (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Oct. 30, 2021 | Jul. 31, 2021 | May 01, 2021 | Oct. 31, 2020 | Aug. 01, 2020 | May 02, 2020 | Oct. 30, 2021 | Oct. 31, 2020 | Jan. 30, 2021
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |
Common stock, dividends (usd per share) | $ 0.18 | $ 0.18 | $ 0 | $ 0 | $ 0 | $ 0 | $ 0.36 | $ 0 |
Dividends, common stock | $ 9.5 | $ 9.5 | $ 0.0 | $ 0.0 | $ 0.0 | $ 0.0 | $ 19.0 | $ 0.0 |
Dividends declared per preferred share (usd per share) | $ 13.14 | $ 13.14 | $ 13.14 | $ 12.81 | $ 12.66 | $ 12.50 | $ 39.42 | $ 37.97 |
Dividends, preferred stock, paid-in-kind | $ 8.2 | $ 8.2 | $ 8.2 | $ 8.0 | $ 7.9 | $ 7.8 | $ 24.6 | $ 23.7 |
Common Stock | Accrued expenses and other current liabilities |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |
Dividends payable | 9.5 |  |  |  |  |  | 9.5 |  |
Series A Redeemable Convertible Preferred Stock | Accrued expenses and other current liabilities |  |  |  |  |  |  |  |  |
Dividends Payable [Line Items] |  |  |  |  |  |  |  |  |
Dividends payable | $ 8.2 |  |  | $ 8.0 |  |  | $ 8.2 | $ 8.0 | $ 8.1

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- Definition Carrying value as of the balance sheet date of dividends declared but unpaid on equity securities issued by the entity and outstanding. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.20) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=124098289&loc=d3e6935-107765 + Details
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