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Income Taxes - Narratives (Details) - USD ($) $ / shares in Units, $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income taxes
Net operating loss carryforward	$ 6,720,659	$ 5,945,753
Tax relief credits	704,928	704,928	$ 0
Unrecognized tax benefits	17,239	14,264	11,555	$ 9,925
Tax benefit from foreign tax status	$ 4,631
Tax benefit from foreign tax status (per share)	$ 0.01
Tax on unremitted earnings	$ 23,735	$ 0	$ 0
State Administration of Taxation, China
Income taxes
Net operating loss carryforward	2,185,546
Swiss Federal Tax Administration (FTA)
Income taxes
Net operating loss carryforward	4,526,020
Tax relief credits	704,928
BeiGene USA
Income taxes
Tax credit carryforwards	$ 43,677

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