Insider Trading Arrangements	3 Months Ended
	Jun. 30, 2024 shares
Trading Arrangements, by Individual
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false
Bryan D. Anderson [Member]
Trading Arrangements, by Individual
Name	Bryan D. Anderson
Title	Executive Vice President
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	May 8, 2024
Expiration Date	August 29, 2025
Arrangement Duration	478 days
Aggregate Available	6,565
James Y. Kerr II [Member]
Trading Arrangements, by Individual
Name	James Y. Kerr II
Title	Chairman, President, and Chief Executive Officer of Southern Company Gas
Rule 10b5-1 Arrangement Adopted	true
Adoption Date	June 5, 2024
Expiration Date	October 10, 2025
Arrangement Duration	492 days
Aggregate Available	30,000