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Structure of Obsidian Energy - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2020 Segment
Disclosure of operating segments [line items] |
Number of operating segment | 1
Percentage of ownership in petroleum and natural gas assets | 100.00%
Obsidian [member] |
Disclosure of operating segments [line items] |
Proportion of ownership interest in joint arrangement | 55.00%

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- 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
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Balance Type: | na
Period Type: | duration

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- Definition The proportion of ownership interest in a joint operation attributable to the entity. [Refer: Joint operations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 12 -IssueDate 2020-01-01 -Paragraph 21 -Subparagraph a -Clause iv -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=12&code=ifrs-tx-2020-en-r&anchor=para_21_a_iv&doctype=Standard -URIDate 2020-01-01 + Details
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Balance Type: | na
Period Type: | duration

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- Definition Number of reportable operating segments. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

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- Definition Percentage of ownership of petroleum and natural gas assets. + References No definition available. + Details
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Namespace Prefix: | obe_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |