DERIVATIVE INSTRUMENTS - EFFECTS OF DERIVATIVE INSTRUMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest Rate Contracts [Abstract]
Losses reclassified from AOCL into income	$ (32)	$ (34)	$ (35)
Total	5,567	5,145	(14,546)
Interest rate contract \| Non-Utility Revenue
Interest Rate Contracts [Abstract]
Losses reclassified from AOCL into income	(46)	(46)	(46)
Not Designated as Hedging Instrument
Interest Rate Contracts [Abstract]
Gains (losses) on energy-related commodity contracts	5,567	385	(11,748)
Gains (losses) on interest rate contracts	0	4,760	(2,798)
South Jersey Gas Company
Interest Rate Contracts [Abstract]
Losses reclassified from AOCL into income	(32)	(34)	(35)
South Jersey Gas Company \| Interest rate contract \| Non-Utility Revenue
Interest Rate Contracts [Abstract]
Losses reclassified from AOCL into income	$ (46)	$ (46)	$ (46)

Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of derivatives not designated as hedging instruments pertaining to energy related commodity contracts.

No definition available.

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Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
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Amount of gain (loss) included in earnings for the period from the increase (decrease) in fair value of interest rate derivatives not designated as hedging instruments.

+ References

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

+ References

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-Publisher FASB
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