RATES AND REGULATORY ACTIONS (Details) - USD ($) $ in Thousands		1 Months Ended					3 Months Ended
	Jan. 01, 2022	Jun. 30, 2022	May 31, 2022	Apr. 30, 2022	Feb. 28, 2022	Nov. 30, 2020	Mar. 31, 2022	Dec. 31, 2021
New Jersey Board of Public Utilities | ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)			$ 77,300		$ 72,900
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				57,500
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)		2,600
Annual USF Petition | New Jersey Board of Public Utilities | ETG Utility Operations
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		1,800
South Jersey Gas Company
Schedule of Capitalization [Line Items]
Net utility plant		$ 3,024,444						$ 2,956,531
South Jersey Gas Company | Annual EEP Rate Adjustment
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)							$ 1,600
South Jersey Gas Company | New Jersey Board of Public Utilities
Schedule of Capitalization [Line Items]
Investment amount				73,100
Approved rate increase (decrease)			$ 800	$ 73,300
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)							11,700
South Jersey Gas Company | Tax Reform | New Jersey Board of Public Utilities
Schedule of Capitalization [Line Items]
Customer refund amount		9,500
South Jersey Gas Company | Recovery Of Costs Of Energy Efficiency Programs
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)							$ 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 | Annual USF Petition | New Jersey Board of Public Utilities
Schedule of Capitalization [Line Items]
Requested revenue increase (decrease)		$ 2,000