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Consolidated Entities and Equity Method Investments (Tables) | 6 Months Ended
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Jun. 30, 2024
Regulated Operations [Abstract] |
Schedule of Equity Method Investments | The carrying amounts of Southern Company Gas' equity method investments at June 30, 2024 and December 31, 2023 were as follows:
Investment Balance | June 30, 2024 | December 31, 2023
| (in millions)
SNG | $ | 1,213 |  | $ | 1,202 |
Other | 33 |  | 33 |
Total | $ | 1,246 |  | $ | 1,235 |

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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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