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Income taxes - Schedule of Valuation Allowances (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Deferred Tax Assets Activity [Roll Forward]
Beginning balance, as of January 1	$ 2,771,470	$ 1,943,775	$ 1,758,409
Additions/(subtractions) charged to income tax provision	157,286	845,811	229,550
Additions/(subtractions) charged to equity	497,823	0	0
Currency translation and other	(23,074)	(18,116)	(44,184)
Ending balance, as of December 31	$ 3,403,505	$ 2,771,470	$ 1,943,775

X

- Definition

Deferred Tax Asset, Valuation Allowance, Changes Included In Earnings

+ References

No definition available.

+ Details

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X

- Definition

Deferred Tax Asset, Valuation Allowance, Currency Translation And Other

+ References

No definition available.

+ Details

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X

- Definition

Deferred Tax Asset, Valuation Allowance, Gain (Loss) Included In Other Comprehensive Income (Loss)

+ References

No definition available.

+ Details

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Namespace Prefix:	bgne_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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X

- Definition

Deferred Tax Assets Activity

+ References

No definition available.

+ Details

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X

- Definition

Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-2

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