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Commitments and contingencies - Contingencies (Details) - U.S. Centers for Medicare and Medicaid Services - JAKAFI $ in Millions	12 Months Ended
	Dec. 31, 2023 USD ($)
Contingencies
Loss Contingences, Gross To Net Deduction Percentage	6.50%
Accrued And Other Current Liabilities
Contingencies
Loss Contingency Accrual	$ 59.5

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Loss Contingences, Gross To Net Deduction Percentage

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Amount of loss contingency liability.

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