BORROWINGS - Narrative (Details) $ in Millions, $ in Millions |
Jun. 30, 2026
USD ($)
|
Mar. 31, 2026
CAD ($)
|
Dec. 31, 2025
USD ($)
|
|---|---|---|---|
| Commercial paper | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Carrying value | $ 1,100 | $ 194 | |
| Interest rate (%) | 4.20% | 4.30% | |
| Medium Term Notes | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Carrying value | $ 3,434 | $ 3,187 | |
| Interest rate (%) | 4.60% | 4.50% | |
| Medium Term Notes | Series 20 (C$500) | |||
| Disclosure of detailed information about borrowings [line items] | |||
| Carrying value | $ 352 | $ 500 | $ 0 |
| Interest rate (%) | 5.20% | 5.20% | 0.00% |