Consolidated Entities and Equity Method Investments (Tables)

3 Months Ended

Mar. 31, 2023

Regulated Operations [Abstract]

Schedule of Equity Method Investments

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

Investment Balance	March 31, 2023		December 31, 2022
	(in millions)
SNG	$	1,249	$	1,243
Other	33		33
Total	$	1,282	$	1,276

Schedule of Earnings (Loss) from Equity Method Investments

	Three Months Ended March 31,
Earnings from Equity Method Investments	2023		2022
	(in millions)
SNG	$	44	$	39
Other	1		1
Total	$	45	$	40