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CONSOLIDATED ENTITIES AND EQUITY METHOD INVESTMENTS (Tables) | 12 Months Ended
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Dec. 31, 2023
Equity Method Investments and Joint Ventures [Abstract] |
Equity method investments | The carrying amounts of Southern Company Gas' equity method investments at December 31, 2023 and 2022 and related earnings (loss) from those investments for the years ended December 31, 2023, 2022, and 2021 were as follows:
Investment Balance | December 31, 2023 |  | December 31, 2022
| (in millions)
SNG | $ | 1,202 |  |  | $ | 1,243 |
Other | 33 |  |  | 33 |
Total | $ | 1,235 |  |  | $ | 1,276 |
Equity method investments related income |
Earnings (Loss) from Equity Method Investments | 2023 |  | 2022 |  | 2021
| (in millions)
SNG | $ | 139 |  |  | $ | 146 |  |  | $ | 127 |
PennEast Pipeline(*) | — |  |  | — |  |  | (81) |
Other | 1 |  |  | 2 |  |  | 4 |
Total | $ | 140 |  |  | $ | 148 |  |  | $ | 50 |
(*)For 2021, includes pre-tax impairment charges totaling $84 million. See "PennEast Pipeline Project" herein for additional information, including the September 2021 cancellation of the project.

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- Definition Tabular disclosure of equity method investments including, but not limited to, name of each investee or group of investments, percentage ownership, difference between recorded amount of an investment and the value of the underlying equity in the net assets, and summarized financial information. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481687/323-10-50-3 + Details
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- Definition Tabular disclosure of the detailed components of other nonoperating income. May include methodology, assumptions and amounts for: (a) dividends, (b) interest on securities, (c) profits on securities (net of losses), and (d) miscellaneous other income items. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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