Condensed Consolidated Statements of Income (Unaudited) - SPC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Operating Revenues:
Total operating revenues	$ 6,973	$ 6,463	$ 14,748	$ 13,109
Operating Expenses:
Other operations and maintenance	1,685	1,388	3,305	2,860
Depreciation and amortization	1,323	1,182	2,608	2,327
Taxes other than income taxes	403	384	848	780
Total operating expenses	5,209	4,524	10,974	9,467
Operating Income	1,764	1,939	3,774	3,642
Other Income and (Expense):
Interest expense, net of amounts capitalized	(874)	(694)	(1,588)	(1,358)
Other income (expense), net	162	151	310	302
Total other income and (expense)	(622)	(461)	(1,082)	(870)
Earnings Before Income Taxes	1,142	1,478	2,692	2,772
Income taxes (benefit)	289	290	569	513
Consolidated Net Income	853	1,188	2,123	2,259
Net loss attributable to noncontrolling interests	(27)	(15)	(91)	(73)
Consolidated Net Income Attributable to Southern Company	880	1,203	2,214	2,332
Other revenues
Operating Revenues:
Total operating revenues	335	309	684	537
Operating Expenses:
Total cost of sales	167	167	366	298
Fuel
Operating Expenses:
Total cost of sales	1,116	1,032	2,408	2,028
Purchased power
Operating Expenses:
Total cost of sales	260	222	510	420
SOUTHERN POWER CO
Operating Revenues:
Total operating revenues	546	524	1,113	997
Operating Expenses:
Other operations and maintenance	135	119	257	241
Depreciation and amortization	177	127	329	245
Taxes other than income taxes	13	13	25	22
Total operating expenses	503	413	1,025	836
Operating Income	43	111	88	161
Other Income and (Expense):
Interest expense, net of amounts capitalized	(24)	(30)	(50)	(59)
Other income (expense), net	3	3	6	6
Total other income and (expense)	(21)	(27)	(44)	(53)
Earnings Before Income Taxes	22	84	44	108
Income taxes (benefit)	(2)	13	(3)	(1)
Consolidated Net Income	24	71	47	109
Net loss attributable to noncontrolling interests	(27)	(15)	(91)	(73)
Consolidated Net Income Attributable to Southern Company	51	86	138	182
SOUTHERN POWER CO | Wholesale revenues, non-affiliates
Operating Revenues:
Total operating revenues	424	427	870	797
SOUTHERN POWER CO | Wholesale revenues, affiliates
Operating Revenues:
Total operating revenues	114	86	229	179
SOUTHERN POWER CO | Other revenues
Operating Revenues:
Total operating revenues	8	11	14	21
SOUTHERN POWER CO | Fuel
Operating Expenses:
Total cost of sales	147	132	355	288
SOUTHERN POWER CO | Purchased power
Operating Expenses:
Total cost of sales	$ 31	$ 22	$ 59	$ 40