COMMITMENTS AND CONTINGENT LIABILITIES (Tables)

12 Months Ended

Sep. 30, 2025

Commitments and Contingencies Disclosure [Abstract]

Schedule of Commitments for Natural Gas Purchases and Future Demands Fees for the Next Five Years

Commitments as of September 30, 2025, for natural gas purchases and future demand fees for the next five fiscal year periods, are as follows:

(Thousands)	2026		2027		2028		2029		2030		Thereafter
ES:
Natural gas purchases	$	74,760	$	3,929	$	—	$	—	$	—	$	—
Storage demand fees	14,275		9,152		6,382		4,375		4,375		5,788
Pipeline demand fees	16,246		49,507		27,548		11,953		10,487		38,247
Sub-total ES	$	105,281	$	62,588	$	33,930	$	16,328	$	14,862	$	44,035
NJNG:
Natural gas purchases	$	10,115	$	—	$	—	$	—	$	—	$	—
Storage demand fees	43,342		35,497		16,288		5,982		2,457		—
Pipeline demand fees	210,841		183,916		128,556		115,553		112,520		746,474
Sub-total NJNG	$	264,298	$	219,413	$	144,844	$	121,535	$	114,977	$	746,474
Total	$	369,579	$	282,001	$	178,774	$	137,863	$	129,839	$	790,509