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Exchangeable Securities (Tables) | 12 Months Ended
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Dec. 31, 2019
Exchangeable Securities [Abstract] |
Disclosure of borrowing costs [text block] | $350 Million Unsecured Subordinated Debentures
As at | Dec. 31, 2019 |  |
| Carrying value | Face value | Interest
Exchangeable debentures – due May 1, 2039 | 326 |  | 350 |  | 7% |

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- Definition The entire disclosure for borrowing costs. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 23 -IssueDate 2018-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=23&date=2018-03-01&anchor=sect_Disclosure&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition Exchangeable Securities [Abstract] + References No definition available. + Details
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