ACCOUNTS RECEIVABLE - Financing Receivables (Details) - CAD ($) $ in Millions |
Dec. 31, 2025 |
Dec. 31, 2024 |
|---|---|---|
| Subclassifications of assets, liabilities and equities [abstract] | ||
| Current financing receivables | $ 2,448 | $ 2,341 |
| Long-term financing receivables | 1,198 | 1,189 |
| Total financing receivables | $ 3,646 | $ 3,530 |