Consolidated Entities and Equity Method Investments (Tables)

9 Months Ended

Sep. 30, 2023

Regulated Operations [Abstract]

Schedule of Equity Method Investments

The carrying amounts of Southern Company Gas' equity method investments at September 30, 2023 and December 31, 2022 and related earnings from those investments for the three and nine months ended September 30, 2023 and 2022 were as follows:

Investment Balance	September 30, 2023		December 31, 2022
	(in millions)
SNG	$	1,210	$	1,243
Other	33		33
Total	$	1,243	$	1,276

Schedule of Earnings (Loss) from Equity Method Investments

	Three Months Ended September 30,				Nine Months Ended September 30,
Earnings from Equity Method Investments	2023		2022		2023		2022
	(in millions)
SNG	$	32	$	34	$	104	$	104
Other	—		—		—		1
Total	$	32	$	34	$	104	$	105