XML 107 R87.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Ballard Power Systems Europe A/S non-controlling interests (Details) - USD ($) $ in Thousands |  |  | 12 Months Ended
--- | --- | --- | ---
Jan. 05, 2017 | Jan. 04, 2017 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of subsidiaries [line items] |  |  |  |
Payments from changes in ownership interests in subsidiaries that do not result in loss of control |  |  | $ 0 | $ 47
Ballard Power Systems Europe NCI adjustment for change in ownership |  |  | $ 480 | $ 480
Ballard Power Systems Europe A/S |  |  |  |
Disclosure of subsidiaries [line items] |  |  |  |
Proportion of ownership interest in subsidiary | 100.00% | 57.00% | 100.00% | 100.00%
Proportion of ownership interest in subsidiary, purchase of additional interest, percentage | 43.00% |  |  |
Repayments of borrowings, classified as financing activities |  |  | $ 521 |
Payments from changes in ownership interests in subsidiaries that do not result in loss of control | $ 47 |  | $ 47 |

X
- Definition Proportion of ownership interest in subsidiary, purchase of additional interest, percentage + References No definition available. + Details
Name: | bldp_Proportionofownershipinterestinsubsidiarypurchaseofadditionalinterestpercentage
Namespace Prefix: | bldp_
Data Type: | num:percentItemType
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 domain members defined in one or many axes of the table. + References No definition available. + Details
Name: | ifrs-full_DisclosureOfSignificantInvestmentsInSubsidiariesLineItems
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The increase (decrease) in equity through changes in ownership interests in subsidiaries that do not result in loss of control. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 106 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_106_d_iii&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_IncreaseDecreaseThroughChangesInOwnershipInterestsInSubsidiariesThatDoNotResultInLossOfControl
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash outflow for changes in ownership interests in subsidiaries that do not result in a loss of control. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 42A -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_42A&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 42B -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_42B&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_PaymentsFromChangesInOwnershipInterestsInSubsidiaries
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The proportion of ownership interest in a subsidiary attributable to the entity. [Refer: Subsidiaries [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2017-01-01 -Paragraph 17 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_17_b_iii&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 27 -IssueDate 2017-01-01 -Paragraph 16 -Subparagraph b -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=27&date=2017-03-01&anchor=para_16_b_iii&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2017-01-01 -Paragraph 19B -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=12&date=2017-03-01&anchor=para_19B_c&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_ProportionOfOwnershipInterestInSubsidiary
Namespace Prefix: | ifrs-full_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cash outflow to settle borrowings, classified as financing activities. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 7 -IssueDate 2017-01-01 -Paragraph 17 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=7&date=2017-03-01&anchor=para_17_d&doctype=Standard -URIDate 2017-03-09 + Details
Name: | ifrs-full_RepaymentsOfBorrowingsClassifiedAsFinancingActivities
Namespace Prefix: | ifrs-full_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | ifrs-full_SignificantInvestmentsInSubsidiariesAxis=bldp_BallardPowerSystemsEuropeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |