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Non-operating income - Narrative (Details) - USD ($) $ in Millions	Aug. 15, 2022	Sep. 30, 2022	May 19, 2020	Apr. 24, 2020
Warrants, Tranche One
Disclosure of detailed information about borrowings [line items]
Convertible Notes, Shares Converted	4,412,840
Facility Agreement With Deerfield Partners, L.P., Tranche One
Disclosure of detailed information about borrowings [line items]
Borrowings			$ 65.0	$ 65.0
Facility Agreement With Deerfield Partners, L.P., Tranche Two
Disclosure of detailed information about borrowings [line items]
Borrowings				50.0
Borrowings, maximum borrowing capacity				50.0
Facility Agreement with Deerfield Partners, L.P.
Disclosure of detailed information about borrowings [line items]
Borrowings		$ 120.0
Borrowings, maximum borrowing capacity				$ 115.0

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- Definition

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2022-03-24
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