RATES AND REGULATORY ACTIONS (Details) - USD ($) $ in Thousands		1 Months Ended					3 Months Ended
	Jan. 01, 2022	Sep. 30, 2022	Aug. 31, 2022	Jun. 30, 2022	May 31, 2022	Nov. 30, 2020	Mar. 31, 2022	Apr. 30, 2022	Dec. 31, 2021
ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		$ (100)
ETG Utility Operations | Annual EEP Rate Adjustment
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)							$ (1,600)
New Jersey Board of Public Utilities | ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		(800)
Approved rate increase (decrease)			$ 40,000
Approved rate of return on rate base, percentage			6.80%
Approved return on common equity, percentage			9.60%
Approved common equity component, percentage			52.00%
IIP Investments | New Jersey Board of Public Utilities | ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		6,300
Net utility plant		57,700
Annual BGSS/CIP Filing, BGSS Component | New Jersey Board of Public Utilities | ETG Utility Operations
Schedule of Capitalization [Line Items]
Approved rate increase (decrease)		57,400
Annual BGSS/CIP Filing, CIP Component | New Jersey Board of Public Utilities | ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		2,200
Annual USF Petition | New Jersey Board of Public Utilities | ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		(1,100)
Recovery Of Remediation Costs | ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		5,100
South Jersey Gas Company
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		(1,200)
Net utility plant		3,074,123							$ 2,956,531
South Jersey Gas Company | New Jersey Board of Public Utilities
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		82,300
Investment amount								$ 73,100
Approved rate increase (decrease)					$ 800
South Jersey Gas Company | New Jersey Board of Public Utilities | IIP Investments
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)						$ 742,500
Approved program, term				5 years
Approved program, amount				$ 200,000
South Jersey Gas Company | Accelerated Infrastructure Replacement Program
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)	$ 6,700
South Jersey Gas Company | Accelerated Infrastructure Replacement Program | New Jersey Board of Public Utilities
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)	$ 69,000
South Jersey Gas Company | Tax Reform
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		9,500					11,700
South Jersey Gas Company | Recovery Of Costs Of Energy Efficiency Programs
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		(4,800)					$ 1,100
South Jersey Gas Company | Annual BGSS/CIP Filing, BGSS Component | New Jersey Board of Public Utilities
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		85,700
South Jersey Gas Company | Annual BGSS/CIP Filing, CIP Component | New Jersey Board of Public Utilities
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		5,600
South Jersey Gas Company | Recovery Of Costs Of Societal Benefits Programs And Electronic Data Interchange Development And Operating Costs
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		$ 1,800