REGULATION - REGULATORY FILINGS (Details) - USD ($) $ in Millions	Nov. 13, 2019	Nov. 01, 2019
Base Rate Stipulation
Schedule of Regulatory Filings [Line Items]
Approved rate increase (decrease), amount	$ 62.2
Approved rate increase (decrease)	6.95%
Approved return on equity	9.60%
Approved equity capital structure, percentage	54.00%
Approved depreciation rate	2.78%
NJNG | NJNG EE Recovery Rate
Schedule of Regulatory Filings [Line Items]
Approved rate increase (decrease), amount		$ 11.3