REGULATION - REGULATORY FILINGS (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended	9 Months Ended	18 Months Ended
	Oct. 01, 2014	Jun. 30, 2015	Dec. 31, 2015	Jun. 30, 2015	May. 31, 2015
BGSS [Member]
Schedule of Regulatory [Line Items]
Public Utilities, interim rate increase (decrease), percentage	(5.00%)
BGSS [Member] | Subsequent Event [Member]
Schedule of Regulatory [Line Items]
Increase (decrease) in requested rate, percentage			(14.30%)
Customer refunds and bill credits			$ 63.7
CIP [Member]
Schedule of Regulatory [Line Items]
Public Utilities, interim rate increase (decrease), percentage	(4.30%)
Increase (decrease) in requested rate, percentage				0.08%
SAVEGREEN [Member] | June 2014 SAVEGREEN Filing [Member]
Schedule of Regulatory [Line Items]
Recovery amount approved by the Board of Public Utilities				$ 75.2
Public Utilities, weighted average cost of capital				6.69%
SBC [Member] | September 2014 SBC Filing [Member]
Schedule of Regulatory [Line Items]
Increase (decrease) in approved rate, percentage				(3.30%)
RA [Member] | July 2013 SBC Filing [Member]
Schedule of Regulatory [Line Items]
Reduction in the RA factor					$ 18.7
RA [Member] | September 2014 SBC Filing [Member]
Schedule of Regulatory [Line Items]
Reduction in the RA factor		$ 8.5
NJCEP [Member] | July 2013 SBC Filing [Member]
Schedule of Regulatory [Line Items]
Reduction in the RA factor					$ 26.8
NJCEP [Member] | September 2014 SBC Filing [Member]
Schedule of Regulatory [Line Items]
Reduction in the RA factor		$ 16.3
NJ RISE Program [Member]
Schedule of Regulatory [Line Items]
Increase (decrease) in requested rate, percentage				0.03%
USF [Member]
Schedule of Regulatory [Line Items]
Increase (decrease) in requested rate, percentage				(0.60%)