RATE MATTERS - FERC Annual Revenue Requirements (Details) - USD ($) $ in Millions |
12 Months Ended | 60 Months Ended | ||||
|---|---|---|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
Dec. 31, 2025 |
|
| FERC 2021 PJM and SPP Transmission Formula Rate Challenge | ||||||
| Public Utilities, General Disclosures [Line Items] | ||||||
| Stand alone treatment of nolcs annual revenue increase | $ 49 | $ 52 | $ 61 | $ 68 | $ 78 | $ 308 |