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REGULATION - REGULATORY FILINGS (Details) - USD ($) $ in Thousands										2 Months Ended
	Jul. 09, 2021	Jun. 25, 2021	Jun. 11, 2021	May 28, 2021	Apr. 07, 2021	Mar. 31, 2021	Mar. 30, 2021	Mar. 03, 2021	Oct. 28, 2020	Jan. 31, 2021
BPU | Natural Gas Distribution
Schedule of Regulatory Filings [Line Items]
Requested rate increase (decrease), amount							$ 165,700
BPU | Natural Gas Distribution | Subsequent Event
Schedule of Regulatory Filings [Line Items]
Requested rate increase (decrease), amount	$ 163,900
BPU | Natural Gas Distribution
Schedule of Regulatory Filings [Line Items]
Approved rate increase (decrease), amount									$ 150,000
IIP approved term									5 years
BGSS | Natural Gas Distribution
Schedule of Regulatory Filings [Line Items]
Requested rate increase (decrease), amount				$ 2,900				$ (20,400)
BGSS | Natural Gas Distribution
Schedule of Regulatory Filings [Line Items]
Interim rate increase (decrease), amount										$ (20,600)
Interim rate increase (decrease), amount, net of tax										$ (19,300)
SAVEGREEN
Schedule of Regulatory Filings [Line Items]
Public utility extension term								3 years
Capital investments approved by the BPU								$ 126,100
Financing options								109,400
Operations and maintenance expense								23,400
Annual recovery increase			$ 2,200					15,600
BGSS Balancing | Natural Gas Distribution
Schedule of Regulatory Filings [Line Items]
Requested rate increase (decrease), amount				13,000				(3,800)
Conservation Incentive Program | Natural Gas Distribution
Schedule of Regulatory Filings [Line Items]
Requested rate increase (decrease), amount				$ (1,600)				$ 16,500
NJ RISE And SAFE II Capital Investments | Natural Gas Distribution
Schedule of Regulatory Filings [Line Items]
Requested rate increase (decrease), amount						$ 311
Capital investment costs						$ 3,400
RAC
Schedule of Regulatory Filings [Line Items]
Approved rate increase (decrease), amount					$ 1,300
NJCEP
Schedule of Regulatory Filings [Line Items]
Approved rate increase (decrease), amount					$ 6,000
USF
Schedule of Regulatory Filings [Line Items]
Requested rate increase (decrease), amount		$ 4,900

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