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Financial Instruments - Counterparty Credit Risk Management (Details) - CAD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
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Disclosure of detailed information about financial instruments [line items] |  |  |
Expected credit loss rate | 1.00% | 1.00% |
Derivative financial asset (liability), net | $ 178 | $ 356 | $ 101
Credit risk |  |  |
Disclosure of detailed information about financial instruments [line items] |  |  |
Derivative financial asset (liability), net | $ 265 | $ 361 |

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- Definition Derivative Financial Assets (Liabilities), Net + References No definition available. + Details
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- Definition The rate of expected credit losses, calculated as percentage of the gross carrying amount. Expected credit losses are the weighted average of credit losses with the respective risks of a default occurring as the weights. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph IG20D -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_IG20D&doctype=Implementation%20Guidance -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 7 -IssueDate 2019-01-01 -Paragraph 35N -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2019-en-r&anchor=para_35N&doctype=Standard -URIDate 2019-03-27 + Details
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- Details
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