REVENUE (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Regulated Operating Revenue, Gas | $ 414,802 | $ 345,250 | $ 1,352,059 | $ 1,092,701 | |
| Regulated Operating Revenue, Other | 8,939 | 8,887 | 6,872 | 19,756 | |
| Regulated Operating Revenue | 423,741 | 354,137 | 1,358,931 | 1,112,457 | |
| Unbilled Receivables, Current | 86,200 | 86,200 | $ 212,000 | ||
| Natural gas sales to customers [Member] | |||||
| Regulated Operating Revenue, Gas | 364,187 | 298,351 | 1,239,435 | 987,856 | |
| Transportation revenues [Member] | |||||
| Regulated Operating Revenue, Gas | 30,717 | 29,587 | 74,465 | 69,554 | |
| Securitization Customer Charges | |||||
| Regulated Operating Revenue, Gas | 13,205 | 11,555 | 24,842 | 23,226 | |
| Miscellaneous revenues [Member] | |||||
| Regulated Operating Revenue, Gas | 6,693 | 5,757 | 13,317 | 12,065 | |
| Other revenues - natural gas sales related [Member] | |||||
| Regulated Operating Revenue, Other | 5,553 | 6,227 | 729 | 14,222 | |
| Other revenues [Member] | |||||
| Regulated Operating Revenue, Other | $ 3,386 | $ 2,660 | $ 6,143 | $ 5,534 | |