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Interest-bearing loans and borrowings - Narrative (Details)			3 Months Ended
	Feb. 02, 2024 USD ($)	Nov. 08, 2022 USD ($) tranch	Mar. 31, 2025 USD ($) d shares $ / shares	Jun. 30, 2024 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($)
Debt Instrument [Line Items]
Proceeds from issue of convertible loan notes			$ 0		$ 402,500,000
Convertible debt \| Convertible senior notes
Debt Instrument [Line Items]
Principal Amount	$ 402,500,000		$ 402,500,000			$ 402,500,000
Option to purchase additional notes	52,500,000
Proceeds from issue of convertible loan notes	389,100,000
Lender fees and issuance costs	$ 13,400,000
Interest rate on notes	2.50%		3.06%
Conversion ratio	10.5601
Debt instrument converted amount			$ 1,000
Conversion price (in USD per share) \| $ / shares			$ 94.70
Convertible number of equity instruments (in shares) \| shares			5,950,600
Threshold percentage of stock price trigger			130.00%
Threshold trading days \| d			20
Threshold consecutive trading days \| d			30
Percentage of redemption price principal amount			100.00%
Line of credit \| Pharmakon loan
Debt Instrument [Line Items]
Number of tranches in which loans funded \| tranch		2
Line of credit \| Pharmakon loan, first tranche
Debt Instrument [Line Items]
Long term borrowing fixed interest rate		9.75%
Loans payable \| Pharmakon loan
Debt Instrument [Line Items]
Principal Amount		$ 100,000,000
Debt Instrument, Fee Payable				$ 1,250,000
Loans payable \| Pharmakon loan, first tranche
Debt Instrument [Line Items]
Principal Amount		50,000,000
Loans payable \| Pharmakon loan, second tranche
Debt Instrument [Line Items]
Principal Amount		$ 50,000,000