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Discontinued operations (Details) - CAD ($) $ in Millions		3 Months Ended
	Jun. 01, 2020	Dec. 31, 2020
Disclosure of analysis of single amount of discontinued operations [abstract]
Proceeds from sale of operations	$ 1,040	$ 933
Gain (loss) recognised on disposal of assets or disposal groups constituting discontinued operation		$ 211

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- References

No definition available.

+ Details

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- Definition

The gain (loss) recognised on the measurement to fair value less costs to sell or on the disposal of the assets or disposal group(s) constituting the discontinued operation. [Refer: Discontinued operations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 5
-IssueDate 2020-01-01
-Paragraph 33
-Subparagraph b
-Clause iii
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-URIDate 2020-01-01

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- Definition

The cash inflow from the disposal of non-current assets or disposal groups classified as held for sale and discontinued operations. [Refer: Discontinued operations [member]; Disposal groups classified as held for sale [member]; Non-current assets or disposal groups classified as held for sale]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-Number 7
-IssueDate 2020-01-01
-Paragraph 16
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=7&code=ifrs-tx-2020-en-r&anchor=para_16&doctype=Standard
-URIDate 2020-01-01

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