SHORT-TERM BORROWINGS - Receivables Securitization Program (Details) - CAD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Disclosure of detailed information about borrowings [line items] | ||
| Short-term borrowings, beginning balance | $ 2,959 | |
| Short-term borrowings, ending balance | 4,000 | $ 2,959 |
| Receivables securitization program | ||
| Disclosure of detailed information about borrowings [line items] | ||
| Short-term borrowings, beginning balance | 2,000 | 1,600 |
| Net proceeds received from receivables securitization | 0 | 400 |
| Short-term borrowings, ending balance | $ 2,000 | $ 2,000 |