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revenue from contracts with customers - Revenues (Details) - Minimum - CAD ($) $ in Millions | Jun. 30, 2026 | Dec. 31, 2025
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Disclosure of transaction price allocated to remaining performance obligations |  |
Transaction price allocated to remaining performance obligations | $ 3,352 | $ 3,498
The 12-month period ending one year hence |  |
Disclosure of transaction price allocated to remaining performance obligations |  |
Transaction price allocated to remaining performance obligations | 2,318 | 2,399
The 12-month period ending two years hence |  |
Disclosure of transaction price allocated to remaining performance obligations |  |
Transaction price allocated to remaining performance obligations | 913 | 972
Thereafter |  |
Disclosure of transaction price allocated to remaining performance obligations |  |
Transaction price allocated to remaining performance obligations | $ 121 | $ 127

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- Definition The amount of the transaction price allocated to the performance obligations that are unsatisfied (or partially unsatisfied) as of the end of the reporting period. The transaction price is the amount of consideration to which an entity expects to be entitled in exchange for transferring promised goods or services to a customer, excluding amounts collected on behalf of third parties (for example, some sales taxes). [Refer: Performance obligations [domain]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 15 -IssueDate 2025-01-01 -Paragraph 120 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2025-en-r&anchor=para_120_a&doctype=Standard -URIDate 2025-03-27 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 108 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_108_a&doctype=Standard -URIDate 2025-03-27 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective 2027-01-01 -Name IFRS -Number 19 -IssueDate 2025-01-01 -Paragraph 108 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=19&code=ifrs-tx-2025-en-r&anchor=para_108_a&doctype=Standard -URIDate 2025-03-27 + Details
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