Consolidated Statements of Income - GAS - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Revenues:
Total operating revenues	$ 25,253	$ 29,279	$ 23,113
Operating Expenses:
Other operations and maintenance	6,093	6,573	5,902
Depreciation and amortization	4,525	3,663	3,565
Taxes other than income taxes	1,425	1,411	1,290
Impairment charges	0	251	2
Total operating expenses	19,427	23,909	19,415
Operating Income	5,826	5,370	3,698
Other Income and (Expense):
Earnings from equity method investments	144	151	76
Interest expense, net of amounts capitalized	(2,446)	(2,022)	(1,837)
Other income (expense), net	553	500	449
Total other income and (expense)	(1,481)	(1,147)	(1,122)
Earnings Before Income Taxes	4,345	4,223	2,576
Income taxes	496	795	267
Net Income	3,849	3,428	2,309
Southern Company Gas
Operating Revenues:
Total operating revenues	4,702	5,962	4,380
Operating Expenses:
Cost of natural gas	1,644	3,004	1,619
Other operations and maintenance	1,194	1,176	1,072
Depreciation and amortization	582	559	536
Taxes other than income taxes	262	282	225
Impairment charges	0	131	0
Estimated loss on regulatory disallowance	88	0	0
Gain on dispositions, net	(7)	(4)	(127)
Total operating expenses	3,763	5,148	3,325
Operating Income	939	814	1,055
Other Income and (Expense):
Earnings from equity method investments	140	148	50
Interest expense, net of amounts capitalized	(310)	(263)	(238)
Other income (expense), net	57	53	(53)
Total other income and (expense)	(113)	(62)	(241)
Earnings Before Income Taxes	826	752	814
Income taxes	211	180	275
Net Income	$ 615	$ 572	$ 539