REGULATION (Tables)

9 Months Ended

Jun. 30, 2017

Regulated Operations [Abstract]

Schedule of Regulatory Assets and Liabilities

Regulatory assets and liabilities included on the Unaudited Condensed Consolidated Balance Sheets are comprised of the following:

(Thousands)	June 30, 2017		September 30, 2016
Regulatory assets-current
Conservation Incentive Program	$	20,623	$	36,957
New Jersey Clean Energy Program	15,363		14,232
Underrecovered gas costs	11,476		—
Derivatives at fair value, net	9,577		3,097
Total current regulatory assets	$	57,039	$	54,286
Regulatory assets-noncurrent
Environmental remediation costs
Expended, net of recoveries	$	23,076	$	19,595
Liability for future expenditures	161,016		172,000
Deferred income taxes	21,919		20,273
Derivatives at fair value, net	112		23,384
SAVEGREEN	15,286		25,208
Postemployment and other benefit costs	148,494		157,027
Deferred Superstorm Sandy costs	13,573		15,201
Other noncurrent regulatory assets	5,291		8,606
Total noncurrent regulatory assets	$	388,767	$	441,294
Regulatory liability-current
Derivatives at fair value, net	$	76	$	—
Overrecovered gas costs	—		9,469
Total current regulatory liabilities	$	76	$	9,469
Regulatory liabilities-noncurrent
Cost of removal obligation	$	13,324	$	30,549
New Jersey Clean Energy Program	6,017		10,657
Other noncurrent regulatory liabilities	709		205
Total noncurrent regulatory liabilities	$	20,050	$	41,411