Segment and Related Information (Tables)

3 Months Ended

Mar. 31, 2023

Segment Reporting [Abstract]

Schedule of Financial Data for Business Segments

Financial data for business segments and products and services for the three months ended March 31, 2023 and 2022 was as follows:

	Electric Utilities
	Traditional Electric Operating Companies		Southern Power		Eliminations		Total		Southern Company Gas		All Other		Eliminations		Consolidated
	(in millions)
Three Months Ended March 31, 2023
Operating revenues	$	4,113	$	508	$	(138)	$	4,483	$	1,875	$	166	$	(44)	$	6,480
Segment net income (loss)(a)(b)	610		102		—		712		309		(154)		(5)		862
At March 31, 2023
Goodwill	$	—	$	2	$	—	$	2	$	5,015	$	144	$	—	$	5,161
Total assets	96,223		13,134		(575)		108,782		24,222		2,606		(854)		134,756
Three Months Ended March 31, 2022
Operating revenues	$	4,191	$	539	$	(221)	$	4,509	$	2,058	$	123	$	(42)	$	6,648
Segment net income (loss)(a)	774		72		—		846		319		(125)		(8)		1,032
At December 31, 2022
Goodwill	$	—	$	2	$	—	$	2	$	5,015	$	144	$	—	$	5,161
Total assets	95,861		13,081		(659)		108,283		24,621		2,665		(678)		134,891

(a)Attributable to Southern Company.

(b)For Southern Power, includes a $16 million pre-tax gain ($12 million after tax) on the sale of spare parts.

Business segment financial data for the three months ended March 31, 2023 and 2022 was as follows:

	Gas Distribution Operations		Gas Pipeline Investments		Gas Marketing Services		Total		All Other		Eliminations		Consolidated
	(in millions)
Three Months Ended March 31, 2023
Operating revenues	$	1,618	$	8	$	246	$	1,872	$	12	$	(9)	$	1,875
Segment net income	221		31		50		302		7		—		309
Total assets at March 31, 2023	22,223		1,583		1,596		25,402		9,598		(10,778)		24,222
Three Months Ended March 31, 2022
Operating revenues	$	1,803	$	8	$	243	$	2,054	$	16	$	(12)	$	2,058
Segment net income	214		29		66		309		10		—		319
Total assets at December 31, 2022	22,040		1,577		1,616		25,233		8,943		(9,555)		24,621

Schedule of Financial Data for Products and Services

	Electric Utilities' Revenues
	Retail		Wholesale		Other		Total
	(in millions)
Three Months Ended March 31, 2023	$	3,599	$	599	$	285	$	4,483
Three Months Ended March 31, 2022	3,613		664		232		4,509

	Southern Company Gas' Revenues
	Gas Distribution Operations		Gas Marketing Services		Other		Total
	(in millions)
Three Months Ended March 31, 2023	$	1,610	$	246	$	19	$	1,875
Three Months Ended March 31, 2022	1,791		243		24		2,058