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Trade and other receivables - Schedule of Trade and Other Receivables (Details) - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Disclosure Of Trade And Other Receivables [Line Items] |  |
Current tax receivable | $ 112 | $ 12
Other accounts receivable | 376 | 311
Total trade and other receivables | 4,489 | 4,031
Trade receivables |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |
Current | 4,305 | 3,959
Allowance for revenue adjustments |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |
Current | (191) | (145)
Allowance for doubtful accounts |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |
Current | (120) | (118)
Commodity taxes receivable |  |
Disclosure Of Trade And Other Receivables [Line Items] |  |
Current | $ 7 | $ 12

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- Definition The amount of current receivables from taxes other than income tax. [Refer: Receivables from taxes other than income tax] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2024-01-01 -Paragraph 78 -Subparagraph b -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_78_b&doctype=Standard -URIDate 2024-03-27 + Details
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