RELATED PARTY TRANSACTIONS - Key Management Personnel Compensation (Details) - CAD ($) $ in Millions |
12 Months Ended | |
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Dec. 31, 2025 |
Dec. 31, 2024 |
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| Related Party [Abstract] | ||
| Salaries and other short-term employee benefits | $ 12 | $ 20 |
| Post-employment benefits | 2 | 2 |
| Stock-based compensation | 35 | 34 |
| Total compensation | $ 49 | $ 56 |
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- References Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition Related Party [Abstract] No definition available.
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