REVENUE (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Regulated Operating Revenue, Gas	$ 937,257	$ 747,451
Regulated Operating Revenue, Other	(2,067)	10,869
Regulated Operating Revenue	935,190	758,320
Unbilled Receivables, Current	119,400		$ 212,000
Natural gas sales to customers [Member]
Regulated Operating Revenue, Gas	875,248	689,505
Transportation revenues [Member]
Regulated Operating Revenue, Gas	43,748	39,967
Securitization Customer Charges
Regulated Operating Revenue, Gas	11,637	11,671
Miscellaneous revenues [Member]
Regulated Operating Revenue, Gas	6,624	6,308
Other revenues - natural gas sales related [Member]
Regulated Operating Revenue, Other	(4,824)	7,995
Other revenues [Member]
Regulated Operating Revenue, Other	$ 2,757	$ 2,874