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v3.19.1

Provisions (Details) - CAD ($) $ in Millions | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2018 | Dec. 31, 2017 | Jan. 01, 2017
Reconciliation of changes in other provisions [abstract] |  |  |  |
Beginning balance | $ 328 |  |  |
Additions | 85 |  |  |
Usage | (33) |  |  |
Reversals | (13) |  |  |
Acquired through business combinations | 4 |  |  |
Ending balance | 371 |  |  |
Current |  | $ 66 | $ 55 | $ 39
Non-current |  | 305 | 273 | $ 273
Total other provisions | 328 | 371 | 328 |
AROs |  |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |  |
Beginning balance | 170 |  |  |
Additions | 38 |  |  |
Usage | (4) |  |  |
Reversals | (5) |  |  |
Acquired through business combinations | 0 |  |  |
Ending balance | 199 |  |  |
Current |  | 16 |  |
Non-current |  | 183 |  |
Total other provisions | 170 | 199 | 170 |
Other |  |  |  |
Reconciliation of changes in other provisions [abstract] |  |  |  |
Beginning balance | 158 |  |  |
Additions | 47 |  |  |
Usage | (29) |  |  |
Reversals | (8) |  |  |
Acquired through business combinations | 4 |  |  |
Ending balance | 172 |  |  |
Current |  | 50 |  |
Non-current |  | 122 |  |
Total other provisions | $ 158 | $ 172 | $ 158 |

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- Definition The increase in other provisions resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount of additional other provisions made. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 84 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84_b&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The increase (decrease) in other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 84 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84&doctype=Standard -URIDate 2018-03-16 + Details
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