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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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LONG-TERM DEBT (Details) - USD ($)	1 Months Ended	3 Months Ended
LONG-TERM DEBT (Details) - USD ($)	Jan. 31, 2016	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Debt Instrument [Line Items]
Proceeds from issuance of debt		$ 61,000,000	$ 0
Long-term debt outstanding		1,075,600,000		$ 1,026,900,000
Line of Credit
Debt Instrument [Line Items]
Letter of credit provided		610,000,000
ACB
Debt Instrument [Line Items]
Repayments of debt	$ 12,700,000
South Jersey Gas Company \| Loans Payable \| Line of Credit
Debt Instrument [Line Items]
Proceeds from issuance of debt	$ 61,000,000
Interest rate (as percent)	1.37%
Letter of credit provided	$ 200,000,000
Long-term debt outstanding		200,000,000
South Jersey Gas Company \| Line of Credit
Debt Instrument [Line Items]
Letter of credit provided		$ 210,000,000