Face (par) amount of debt instrument at time of issuance.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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- Definition

The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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- Definition

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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- Definition

Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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- Definition

Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements.

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LONG-TERM DEBT (Details) - USD ($)		3 Months Ended
LONG-TERM DEBT (Details) - USD ($)	Apr. 26, 2019	Mar. 31, 2019	Jan. 17, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Carrying amount of long-term debt, including current maturities		$ 2,450,000,000		$ 2,840,000,000
Series 2018D Senior Notes, Due 2019
Debt Instrument [Line Items]
Principal amount issued			$ 475,000,000
Early repayment of senior debt		400,000,000
Subsequent event \| Series 2018D Senior Notes, Due 2019
Debt Instrument [Line Items]
Early repayment of senior debt	$ 75,000,000
SJG Utility Operations
Debt Instrument [Line Items]
Carrying amount of long-term debt, including current maturities		903,600,000		$ 893,400,000
Unsecured Term Loan \| SJG Utility Operations \| Credit Agreement
Debt Instrument [Line Items]
Proceeds from Lines of Credit		10,000,000
Total Facility		$ 400,000,000.0