REVENUE (Details) - USD ($) $ in Thousands |
3 Months Ended | ||
|---|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
Dec. 31, 2025 |
|
| Regulated Operating Revenue, Gas | $ 815,723 | $ 937,257 | |
| Regulated Operating Revenue, Other | 15,988 | (2,067) | |
| Regulated operating revenue | 831,711 | 935,190 | |
| Unbilled Receivables, Current | 121,000 | $ 216,400 | |
| Natural gas sales to customers [Member] | |||
| Regulated Operating Revenue, Gas | 758,368 | 875,248 | |
| Transportation revenues [Member] | |||
| Regulated Operating Revenue, Gas | 39,803 | 43,748 | |
| Securitization Customer Charges | |||
| Regulated Operating Revenue, Gas | 10,977 | 11,637 | |
| Miscellaneous revenues [Member] | |||
| Regulated Operating Revenue, Gas | 6,575 | 6,624 | |
| Other revenues - natural gas sales related [Member] | |||
| Regulated Operating Revenue, Other | 11,802 | (4,824) | |
| Other revenues [Member] | |||
| Regulated Operating Revenue, Other | $ 4,186 | $ 2,757 | |