SUBSEQUENT EVENTS	3 Months Ended
Mar. 31, 2021
Subsequent Events [Abstract]
SUBSEQUENT EVENTS	SUBSEQUENT EVENTS: During April 2021, the following events occurred: •Restricted shares were granted to SJI Directors, see Note 2. •SJI entered into transactions related to the Equity Units and 2018 Corporate Units, see Note 4. •SJI repaid the $90.0 million principal amount outstanding on its 3.43% Series 2018-A Notes at maturity. •ETG and SJIU entered into a fourth amendment to their revolving credit agreement. See Note 10. In April and May 2021, the Utilities received approvals from the BPU related to several of their filings related to various periodic rate mechanisms, see Note 7. On May 5, 2021, SJI’s board of directors declared its regular dividend of $0.3025 per share for the second quarter of 2021. The dividend is payable July 2, 2021 to shareholders of record at the close of business on June 10, 2021.

The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-URI http://asc.fasb.org/topic&trid=2122774

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 855
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6842918&loc=SL6314017-165662

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