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Net Other Operating (Income) Losses (Details) - CAD ($) $ in Millions |  | 12 Months Ended
--- | --- | ---
Jul. 20, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Disclosure of types of insurance contracts [line items] |  |  |  |
Alberta off-coal agreement, annual cash payments, gross | $ 40 | $ 40 | $ 40 | $ 40
Alberta off-coal agreement, annual cash payments, net | $ 37 |  |  |
Mississauga cogeneration facility NUG Contract |  | 1 | 0 | 9
Insurance recoveries |  | $ 10 | 7 | $ 0
Canadian Coal | Equipment Repair [Member] |  |  |  |
Disclosure of types of insurance contracts [line items] |  |  |  |
Insurance recoveries |  |  | 1 |
Wyoming Wind [Member] |  |  |  |
Disclosure of types of insurance contracts [line items] |  |  |  |
Insurance recoveries |  |  | $ 6 |

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- Definition The amount of income recognised from the reimbursement of a claim as a result of the occurrence of an insured event covered by an insurance contract. [Refer: Types of insurance contracts [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_112_c&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Gains (Losses) on Contract Agreement + References No definition available. + Details
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- Details
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