Consolidated Entities and Equity Method Investments (Tables)

3 Months Ended

Mar. 31, 2021

Regulated Operations [Abstract]

Schedule of Equity Method Investments

The carrying amounts of Southern Company Gas' equity method investments as of March 31, 2021 and December 31, 2020 and related income from those investments for the three months ended March 31, 2021 and 2020 were as follows:

Investment Balance	March 31, 2021		December 31, 2020
	(in millions)
SNG	$	1,164	$	1,167
PennEast Pipeline(*)	93		91
Other	33		32
Total	$	1,290	$	1,290

(*)See Note (C) under "Other Matters – Southern Company Gas" for additional information.

Schedule of Earnings from Equity Method Investments

Earnings from Equity Method Investments	Three Months Ended March 31, 2021		Three Months Ended March 31, 2020
	(in millions)
SNG	$	38	$	37
PennEast Pipeline(a)	2		2
Other(a)(b)	1		4
Total	$	41	$	43

(a)Earnings primarily result from AFUDC equity recorded by the project entity.

(b)On March 24, 2020, Southern Company Gas completed the sale of its interests in Atlantic Coast Pipeline and Pivotal LNG. See Note 15 to the financial statements under "Southern Company Gas" in Item 8 of the Form 10-K for additional information.