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Consolidated Statements of Shareholders' Equity (Parenthetical) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 USD ($) | Dec. 31, 2021 SFr / shares | Dec. 31, 2020 SFr / shares | Dec. 31, 2019 SFr / shares
Common shares, par value | SFr / shares |  |  |  | SFr 0.03 | SFr 0.03 |
Stock Options [Member] |  |  |  |  |  |
Issuance costs | $ | $ 2.6 | $ 1.2 | $ 0.3 |  |  |
Common Shares [Member] |  |  |  |  |  |
Issuance costs | $ | $ 5.4 | $ 46.4 | $ 25.1 |  |  |
Common shares, par value | SFr / shares |  |  |  | SFr 0.03 | SFr 0.03 | SFr 0.03

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