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Contingencies and commitments - Narrative (Details)	May 28, 2024 patent	May 02, 2024 securityCase
Loss Contingencies [Line Items]
Number Of Securities Cases Filed | securityCase		2
Amgen Inc. Vs. Celltrion Inc | Pending Litigation
Loss Contingencies [Line Items]
Number of patents allegedly infringed upon | patent	29

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