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Commitments and contingent liabilities - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022
Palette Life Sciences AB |  |
Loss Contingencies [Line Items] |  |
Loss contingency accrual | $ 3.5 |
Italian parliament legislation |  |
Loss Contingencies [Line Items] |  |
Loss contingency accrual | 14.5 |
Loss contingency, loss in period | 3.2 |
Loss contingency, estimate of possible loss | $ 22.9 |
Minimum |  |
Loss Contingencies [Line Items] |  |
Estimated time frame over which accrued amounts may be paid out | 10 years |
Maximum |  |
Loss Contingencies [Line Items] |  |
Estimated time frame over which accrued amounts may be paid out | 15 years |
Accrued Liabilities |  |
Loss Contingencies [Line Items] |  |
Waste disposed accrued liability | $ 2.5 | $ 2.5
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Other current liabilities | Other current liabilities
Contingency reserve for litigation | $ 0.8 | $ 0.5
Other Liabilities |  |
Loss Contingencies [Line Items] |  |
Waste disposed accrued liability | $ 3.8 | $ 3.2
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration] | Other liabilities | Other liabilities

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