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financial instruments - Credit risk (Details) - CAD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
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Credit risk |  |
Maximum exposure (excluding income tax effects) to credit risk | $ 6,156 | $ 6,061
Cash and temporary investments, net |  |
Credit risk |  |
Maximum exposure (excluding income tax effects) to credit risk | 869 | 864
Accounts receivable |  |
Credit risk |  |
Maximum exposure (excluding income tax effects) to credit risk | 4,319 | 4,234
Contract assets |  |
Credit risk |  |
Maximum exposure (excluding income tax effects) to credit risk | 790 | 748
Derivative assets |  |
Credit risk |  |
Maximum exposure (excluding income tax effects) to credit risk | $ 178 | $ 215

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- Definition The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2024-01-01 -Paragraph 35K -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2024-en-r&anchor=para_35K_a&doctype=Standard -URIDate 2024-03-27 + Details
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