XML 95 R63.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Material accounting policies - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Disclosure of joint ventures [line items] |  |
Short-term leases for which recognition exemption has been used, period | 12 months |
Recognition exemption threshold | $ 5 |
Weichai Ballard JV |  |
Disclosure of joint ventures [line items] |  |
Proportion of ownership interest in joint venture | 49.00% | 49.00%

X
- Definition Lease, Recognition Exemption Threshold + References No definition available. + Details
Name: | bldp_LeaseRecognitionExemptionThreshold
Namespace Prefix: | bldp_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Short-term Leases For Which Recognition Exemption Has Been Used, Period + References No definition available. + Details
Name: | bldp_ShortTermLeasesForWhichRecognitionExemptionHasBeenUsedPeriod
Namespace Prefix: | bldp_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfJointVenturesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The proportion of ownership interest in a joint venture attributable to the entity. [Refer: Total for all joint ventures [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_17_b_iii&doctype=Standard -URIDate 2024-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2024-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=27&code=ifrs-tx-2024-en-r&anchor=para_16_b_iii&doctype=Standard -URIDate 2024-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2024-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2024-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2024-03-27 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInJointVenture
Namespace Prefix: | ifrs-full_
Data Type: | dtr-2022:percentItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInAssociatesAxis=bldp_WeichaiBallardJVMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |