Risk Management - Schedule of PGE's Net Volumes related to Assets and Liabilities from Price Risk Management Activities (Details) MWh in Millions, MMBTU in Millions, $ in Millions |
Jun. 30, 2026
CAD ($)
MMBTU
MWh
|
Dec. 31, 2025
CAD ($)
MWh
MMBTU
|
|---|---|---|
| Price Risk Management Note [Abstract] | ||
| Electricity | MWh | 0 | 1 |
| Natural gas | MMBTU | 236 | 224 |
| Foreign currency | $ | $ 3 | $ 9 |