Ceiling limit of profit to estimate tax rate.

No definition available.

Name:	bili_Ceilinglimitofprofittoestimatetaxrate
Namespace Prefix:	bili_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Income tax rate below threshold amount.

+ References

No definition available.

+ Details

Name:	bili_IncomeTaxRateBelowThresholdAmount
Namespace Prefix:	bili_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	bili_IncomeTaxesDisclosureLineItems
Namespace Prefix:	bili_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The preferential tax rate applicable to the entity under the preferential tax treatment.

+ References

No definition available.

+ Details

Name:	bili_IncomeTaxesPreferentialTaxRate
Namespace Prefix:	bili_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

+ Details

Name:	bili_OperatingLossCarryforwardsAbstract
Namespace Prefix:	bili_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of withholding income tax expense pertaining to taxable income.

+ References

No definition available.

+ Details

Name:	bili_WithholdingIncomeTaxExpense
Namespace Prefix:	bili_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- References

No definition available.

+ Details

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

- Definition

Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-12

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 231
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482663/740-10-55-231

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 6.I.1.Q1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479360/740-10-S99-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 235
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08(h)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1

+ Details

Name:	us-gaap_EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount, after refund, of cash paid to foreign, federal, state, and local jurisdictions as income tax.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-23

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 22
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-22

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482913/230-10-50-2

+ Details

Name:	us-gaap_IncomeTaxesPaidNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 740
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482685/740-10-50-3

+ Details

Name:	us-gaap_OperatingLossCarryforwards
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Details

Name:	bili_TaxCreditAndLossCarryForwardsExpirationPeriodAxis=bili_OperatingLossCarryforwardsExpirationNextTwelveMonthsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bili_TaxCreditAndLossCarryForwardsExpirationPeriodAxis=bili_OperatingLossCarryforwardsExpirationSecondYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bili_TaxCreditAndLossCarryForwardsExpirationPeriodAxis=bili_OperatingLossCarryforwardsExpirationThirdYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bili_TaxCreditAndLossCarryForwardsExpirationPeriodAxis=bili_OperatingLossCarryforwardsExpirationFourthYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bili_TaxCreditAndLossCarryForwardsExpirationPeriodAxis=bili_OperatingLossCarryforwardsExpirationFifthYearAndAfterFifthYearMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=us-gaap_CaymanIslandsTaxInformationAuthorityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=us-gaap_InlandRevenueHongKongMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=us-gaap_StateAdministrationOfTaxationChinaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	dei_LegalEntityAxis=bili_CertainSubsidiariesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	bili_EnterpriseCategoryAxis=bili_HighAndNewTechnologyEnterprisesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=bili_BritishVirginIslandsTaxInformationAuthorityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeTaxAuthorityAxis=us-gaap_ForeignTaxJurisdictionOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Taxation - Income taxes (Details) $ in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2025 CNY (¥)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 HKD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2024 HKD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2023 HKD ($)
Income taxes
Withholding tax amount	¥ 9,473,000			¥ 17,836,000		¥ 22,284,000
Income tax rate (as a percent)	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%
Income taxes (net of refunds received)	¥ 63,123,000	$ 9,026		¥ 87,217,000		¥ 103,391,000
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate
Statutory income tax rate	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%	25.00%
Operating loss carryforwards
Net operating tax loss carry forwards	¥ 18,249,860,000
Loss expiring in 2026
Operating loss carryforwards
Net operating tax loss carry forwards	246,081,000
Loss expiring in 2027
Operating loss carryforwards
Net operating tax loss carry forwards	927,888,000
Loss expiring in 2028
Operating loss carryforwards
Net operating tax loss carry forwards	718,454,000
Loss expiring in 2029
Operating loss carryforwards
Net operating tax loss carry forwards	306,105,000
Loss expiring in 2030 and thereafter
Operating loss carryforwards
Net operating tax loss carry forwards	16,051,332,000
Cayman Islands
Income taxes
Withholding tax amount	¥ 0
Hong Kong, China
Income taxes
Statutory income tax rate below threshold amount	8.25%	8.25%	8.25%	8.25%	8.25%	8.25%	8.25%
Ceiling limit of profit to estimate tax rate \| $			$ 2		$ 2		$ 2
Income tax rate (as a percent)	16.50%	16.50%	16.50%	16.50%	16.50%	16.50%	16.50%
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate
Statutory income tax rate	16.50%	16.50%	16.50%	16.50%	16.50%	16.50%	16.50%
Mainland, China
Income taxes
Income tax rate (as a percent)	25.00%	25.00%	25.00%
Income taxes (net of refunds received)	¥ 60,600,000
Reconciliation of the differences between the statutory income tax rate and the Group's effective income tax rate
Statutory income tax rate	25.00%	25.00%	25.00%
Mainland, China \| Certain subsidiaries \| High and New Technology Enterprises [Member]
Income taxes
Preferential income tax rate	15.00%	15.00%	15.00%
Virgin Islands, British
Income taxes
Withholding tax amount	¥ 0
Other foreign jurisdictions
Income taxes
Income taxes (net of refunds received) \| $		$ 2,500