Condensed Consolidated Statements of Income (Unaudited) - GAS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Operating Revenues:
Total operating revenues	$ 7,274	$ 6,980	$ 20,383	$ 19,208
Operating Expenses:
Other operations and maintenance	1,662	1,424	4,543	4,352
Depreciation and amortization	1,210	1,143	3,537	3,365
Taxes other than income taxes	375	341	1,155	1,076
Total operating expenses	4,906	4,870	14,373	14,589
Operating Income	2,368	2,110	6,010	4,619
Other Income and (Expense):
Earnings from equity method investments	31	32	107	110
Interest expense, net of amounts capitalized	(692)	(620)	(2,050)	(1,812)
Other income (expense), net	147	141	450	428
Total other income and (expense)	(456)	(381)	(1,326)	(1,074)
Earnings Before Income Taxes	1,912	1,729	4,684	3,545
Income taxes	377	297	890	492
Consolidated Net Income	1,535	1,432	3,794	3,053
SOUTHERN Co GAS
Operating Revenues:
Total operating revenues	$ 682	$ 689	$ 3,220	$ 3,417
Revenue, Product and Service [Extensible Enumeration]	Natural gas	Natural gas	Natural gas	Natural gas
Operating Expenses:
Cost, Product and Service [Extensible Enumeration]	Natural gas	Natural gas	Natural gas	Natural gas
Total cost of sales	$ 98	$ 102	$ 852	$ 1,199
Other operations and maintenance	295	264	877	879
Depreciation and amortization	162	145	475	429
Taxes other than income taxes	44	42	186	203
Total operating expenses	599	553	2,390	2,710
Operating Income	83	136	830	707
Other Income and (Expense):
Earnings from equity method investments	34	32	110	104
Interest expense, net of amounts capitalized	(84)	(77)	(250)	(226)
Other income (expense), net	16	19	49	50
Total other income and (expense)	(34)	(26)	(91)	(72)
Earnings Before Income Taxes	49	110	739	635
Income taxes	11	28	184	160
Consolidated Net Income	$ 38	$ 82	$ 555	$ 475