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Acquisitions - Summary of Transaction Costs (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 CAD ($)
Business Combinations [Abstract]
Transaction Costs	$ 65
Integration Related Costs	104
Severance Payments	180
Total transaction costs	$ 349

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- Definition

Business Combinations [Abstract]

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Integration-Related Costs For Transaction Recognized Separately From Acquisition Of Assets And Assumption Of Liabilities In Business Combination

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Severance Costs Recognized Separately From Acquisition Of Assets And Assumption Of Liabilities In Business Combination

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- Definition

The amount of acquisition-related costs for transactions recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2021-01-01
-Paragraph B64
-Subparagraph m
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The amounts recognised for transaction recognised separately from the acquisition of assets and the assumption of liabilities in business combinations. [Refer: Business combinations [member]]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2021-01-01
-Paragraph B64
-Subparagraph l
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-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2021-en-r&anchor=para_B64_l_iii&doctype=Appendix&subtype=B
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