DERIVATIVES (Volumes of Outstanding Derivative Contracts) (Details) |
Sep. 30, 2026
MMBTU
MWh
|
Dec. 31, 2025
MMBTU
MWh
|
|---|---|---|
| Natural Gas | Forwards, futures, and swaps | ||
| Derivative [Line Items] | ||
| Contract Volume | 196,386,942 | 232,825,834 |
| Natural Gas | Options | ||
| Derivative [Line Items] | ||
| Contract Volume | 62,440,000 | 48,215,000 |
| Electricity (MWh) | Forwards, futures, and swaps | ||
| Derivative [Line Items] | ||
| Contract Volume | MWh | 5,588,429 | 7,196,942 |
| Electricity (MWh) | Options | ||
| Derivative [Line Items] | ||
| Contract Volume | 2,206,000 | 1,650,800 |
| Electricity (MWh) | Congestion Revenue Rights | ||
| Derivative [Line Items] | ||
| Contract Volume | MWh | 67,268,155 | 93,712,644 |