Financial Instruments - Price and Discount Rate Sensitivities (Details) - Natural gas embedded derivative $ in Millions |
12 Months Ended |
|---|---|
|
Dec. 31, 2025
CAD ($)
| |
| US$0.1/MMBtu increase | |
| Disclosure of detailed information about financial instruments [line items] | |
| Fair value – increase/(decrease) | $ 52 |
| US$0.1/MMBtu decrease | |
| Disclosure of detailed information about financial instruments [line items] | |
| Fair value – increase/(decrease) | (52) |
| 1% increase | |
| Disclosure of detailed information about financial instruments [line items] | |
| Fair value – increase/(decrease) | (90) |
| 1% decrease | |
| Disclosure of detailed information about financial instruments [line items] | |
| Fair value – increase/(decrease) | $ 105 |