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v3.10.0.1

Provisions (Details) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2018 CAD ($) | Dec. 31, 2017 CAD ($)
Disclosure of other provisions [line items] |  |
Beginning balance | $ 7,959 | $ 7,323
Liabilities incurred | 455 | 557
Change in discount rate | (663) | 255
Changes in estimates | 31 | (3)
Liabilities settled | (578) | (402)
Accretion | 266 | 247
Asset acquisitions | 133 | 5
Foreign exchange | 48 | (23)
Ending balance | 7,651 | 7,959
Less: current portion | (667) | (722)
Non-current provisions | 6,984 | 7,237
Decommissioning and Restoration |  |
Disclosure of other provisions [line items] |  |
Beginning balance | 7,465 | 6,746
Liabilities incurred | 345 | 494
Change in discount rate | (663) | 255
Changes in estimates | 114 | 92
Liabilities settled | (469) | (353)
Accretion | 266 | 247
Asset acquisitions | 133 | 5
Foreign exchange | 48 | (21)
Ending balance | 7,239 | 7,465
Less: current portion | (538) | (434)
Non-current provisions | 6,701 | 7,031
Total undiscounted amount of estimated future cash flows required | $ 13,000 | $ 12,200
Weighted average credit adjusted risk free interest rate | 4.20 | 3.70
Royalties |  |
Disclosure of other provisions [line items] |  |
Beginning balance | $ 240 | $ 307
Liabilities incurred | 9 | 29
Changes in estimates | (67) | (89)
Liabilities settled | (84) | (7)
Ending balance | 98 | 240
Less: current portion | (98) | (240)
Other |  |
Disclosure of other provisions [line items] |  |
Beginning balance | 254 | 270
Liabilities incurred | 101 | 34
Changes in estimates | (16) | (6)
Liabilities settled | (25) | (42)
Foreign exchange |  | (2)
Ending balance | 314 | 254
Less: current portion | (31) | (48)
Non-current provisions | $ 283 | $ 206

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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 current provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_l&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The increase (decrease) in other provisions resulting from a change in discount rate. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 37 -IssueDate 2018-01-01 -Paragraph 84 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84_e&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The increase (decrease) in other provisions resulting from foreign currency exchange rate changes on provisions measured in a currency different from the entity's presentation currency. [Refer: 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 recognised for new other provisions. [Refer: Other provisions] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -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 amount of non-current provisions. [Refer: Provisions] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2018-01-01 -Paragraph 54 -Subparagraph l -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2018-03-01&anchor=para_54_l&doctype=Standard -URIDate 2018-03-16 + Details
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- Definition The amount used (ie incurrent and charged against the provision) for 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 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=37&date=2018-03-01&anchor=para_84_c&doctype=Standard -URIDate 2018-03-16 + Details
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