Consolidated Entities and Equity Method Investments (Tables)

6 Months Ended

Jun. 30, 2021

Regulated Operations [Abstract]

Schedule of Equity Method Investments

The carrying amounts of Southern Company Gas' equity method investments at June 30, 2021 and December 31, 2020 and related earnings (loss) from those investments for the three and six months ended June 30, 2021 and 2020 were as follows:

Investment Balance	June 30, 2021		December 31, 2020
	(in millions)
SNG	$	1,143	$	1,167
PennEast Pipeline(*)	13		91
Other	33		32
Total	$	1,189	$	1,290

(*)Investment balance at June 30, 2021 reflects a pre-tax impairment charge of $82 million ($58 million after tax) recorded in the second quarter 2021. See Note (C) under "Other Matters – Southern Company Gas" for additional information.

Schedule of Earnings from Equity Method Investments

	Three Months Ended June 30,				Six Months Ended June 30,
Earnings (Loss) from Equity Method Investments	2021		2020		2021		2020
	(in millions)
SNG	$	28	$	28	$	66	$	65
PennEast Pipeline(a)(b)	(81)		1		(79)		3
Other(a)(c)	1		1		2		4
Total	$	(52)	$	30	$	(11)	$	72

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

(b)Includes a pre-tax impairment charge of $82 million ($58 million after tax) for the three and six months ended June 30, 2021. See Note (C) under "Other Matters – Southern Company Gas" for additional information.

(c)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.