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Significant Events - Asset Acquisitions (Details) - Keephills 3 - CAD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2019 | Dec. 31, 2019
Investment [Line Items] |  |
Working capital | $ 11 |
Property, plant and equipment | 308 | $ 308
Other assets | 3 |
Other liabilities | 2 |
Decommissioning and other provisions | 19 |
Total acquisition cost | $ 301 |

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- Definition The amount of additions to property, plant and equipment other than those acquired through business combinations. [Refer: Business combinations [member]; Property, plant and equipment] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 16 -IssueDate 2018-01-01 -Paragraph 73 -Subparagraph e -Clause i -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2018-03-01&anchor=para_73_e_i&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Line items represent reporting 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Article 12 -Section 12 -Sentence Column A + Details
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- Definition Asset Acquisition, Assets Acquired and Liabilities Assumed, Net + References No definition available. + Details
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- Details
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