Condensed Consolidated Statements of Income (Unaudited) - SPC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Operating Revenues:
Total operating revenues	$ 6,980	$ 8,378	$ 19,208	$ 22,232
Operating Expenses:
Other operations and maintenance	1,424	1,527	4,352	4,568
Depreciation and amortization	1,143	922	3,365	2,728
Taxes other than income taxes	341	352	1,076	1,073
Total operating expenses	4,870	6,185	14,589	17,000
Operating Income	2,110	2,193	4,619	5,232
Other Income and (Expense):
Interest expense, net of amounts capitalized	(620)	(511)	(1,812)	(1,461)
Other income (expense), net	141	132	428	414
Total other income and (expense)	(381)	(292)	(1,074)	(775)
Earnings Before Income Taxes	1,729	1,901	3,545	4,457
Income taxes	297	414	492	891
Net Income	1,432	1,487	3,053	3,566
Net income (loss) attributable to noncontrolling interests	10	12	(68)	(55)
Net Income	1,422	1,472	3,121	3,611
Retail electric revenues
Operating Revenues:
Total operating revenues	5,139	5,961	12,597	14,363
Wholesale electric revenues
Operating Revenues:
Total operating revenues	727	1,197	1,930	2,798
Other electric revenues
Operating Revenues:
Total operating revenues	203	185	602	554
Natural Gas
Operating Revenues:
Total operating revenues	689	857	3,417	3,998
Other revenues
Operating Revenues:
Total operating revenues	222	178	662	519
Operating Expenses:
Total cost of sales	126	92	381	275
Fuel
Operating Expenses:
Total cost of sales	1,367	2,423	3,376	5,249
Purchased power
Operating Expenses:
Total cost of sales	207	645	680	1,285
SOUTHERN POWER CO
Operating Revenues:
Total operating revenues	653	1,180	1,686	2,618
Operating Expenses:
Other operations and maintenance	104	113	327	332
Depreciation and amortization	130	133	380	384
Taxes other than income taxes	13	13	38	38
Gain on dispositions, net	0	0	(20)	(2)
Total operating expenses	476	1,008	1,338	2,259
Operating Income	177	172	348	359
Other Income and (Expense):
Interest expense, net of amounts capitalized	(32)	(32)	(98)	(105)
Other income (expense), net	4	3	8	5
Total other income and (expense)	(28)	(29)	(90)	(100)
Earnings Before Income Taxes	149	143	258	259
Income taxes	39	36	38	49
Net Income	110	107	220	210
Net income (loss) attributable to noncontrolling interests	10	12	(68)	(55)
Net Income	100	95	288	265
SOUTHERN POWER CO | Wholesale revenues, non-affiliates
Operating Revenues:
Total operating revenues	479	835	1,234	1,918
SOUTHERN POWER CO | Wholesale revenues, affiliates
Operating Revenues:
Total operating revenues	156	336	406	673
SOUTHERN POWER CO | Other revenues
Operating Revenues:
Total operating revenues	18	9	46	27
SOUTHERN POWER CO | Fuel
Operating Expenses:
Total cost of sales	196	605	526	1,274
SOUTHERN POWER CO | Purchased power
Operating Expenses:
Total cost of sales	$ 33	$ 144	$ 87	$ 233