Supplemental Balance Sheet Information - Schedule of Accrued Expenses and Other Payables (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Accrued expenses and other payables
Compensation related	$ 248,348	$ 217,803
Sales rebates and returns related	235,600	139,936
External research and development activities related	154,269	162,969
Commercial activities	77,530	87,572
Accrued general and administrative expenses	31,106	36,203
Individual income tax and other taxes	34,904	30,083
Other	21,956	19,165
Total	$ 803,713	$ 693,731

Accrued Expenses, Commercial Activities

No definition available.

Name:	bgne_AccruedExpensesCommercialActivities
Namespace Prefix:	bgne_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Accrued General And Administrative Expenses, Current

+ References

No definition available.

+ Details

Name:	bgne_AccruedGeneralAndAdministrativeExpensesCurrent
Namespace Prefix:	bgne_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of the obligations incurred through that date related to external research and development activities related

+ References

No definition available.

+ Details

Name:	bgne_AccruedLiabilitiesExternalResearchAndDevelopment
Namespace Prefix:	bgne_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred through that date and payable for professional fees, such as for legal and accounting services received and amount of expenses incurred but not yet paid classified as other, due within one year or the normal operating cycle, if longer.

+ References

No definition available.

+ Details

Name:	bgne_AccruedProfessionalFeesAndOtherCurrent
Namespace Prefix:	bgne_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Accrued Sales Rebates and Returns, Current

+ References

No definition available.

+ Details

Name:	bgne_AccruedSalesRebatesAndReturnsCurrent
Namespace Prefix:	bgne_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

+ Details

Name:	us-gaap_AccruedLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable for statutory payroll taxes incurred through that date and withheld from employees pertaining to services received from them, including entity's matching share of the employees FICA taxes and contributions to the state and federal unemployment insurance programs. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

Name:	us-gaap_AccruedPayrollTaxesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Total of the carrying values as of the balance sheet date of obligations incurred through that date and payable for obligations related to services received from employees, such as accrued salaries and bonuses, payroll taxes and fringe benefits. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

+ References

+ Details

Name:	us-gaap_EmployeeRelatedLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant