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Discontinued operations - Cash Flows (Details) - CAD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019
Disclosure of analysis of single amount of discontinued operations [line items] |  |
Cash from discontinued operations | $ 54 | $ 94
Cash from (used in) discontinued operations | 892 | (18)
Cash used in discontinued operations | (7) | (6)
Net increase in cash | 83 | (284)
Discontinued operations |  |
Disclosure of analysis of single amount of discontinued operations [line items] |  |
Net increase in cash | $ 939 | $ 70

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- Definition The cash flows from (used in) the entity's financing activities, related to discontinued operations. [Refer: Discontinued operations [member]; Cash flows from (used in) financing activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2020-01-01 -Paragraph 33 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2020-en-r&anchor=para_33_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The cash flows from (used in) the entity's operating activities, related to discontinued operations. [Refer: Discontinued operations [member]; Cash flows from (used in) operating activities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 5 -IssueDate 2020-01-01 -Paragraph 33 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=5&code=ifrs-tx-2020-en-r&anchor=para_33_c&doctype=Standard -URIDate 2020-01-01 + Details
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