Condensed Consolidated Statements of Income (Unaudited) - SPC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Operating Revenues:
Total operating revenues	$ 5,748	$ 7,206	$ 12,228	$ 13,854
Operating Expenses:
Other operations and maintenance	1,489	1,548	2,929	3,042
Depreciation and amortization	1,112	913	2,222	1,805
Taxes other than income taxes	340	349	734	721
Total operating expenses	4,458	5,551	9,719	10,815
Operating Income	1,290	1,655	2,509	3,039
Other Income and (Expense):
Interest expense, net of amounts capitalized	(610)	(488)	(1,192)	(950)
Other income (expense), net	142	139	286	283
Total other income and (expense)	(369)	(262)	(693)	(483)
Earnings Before Income Taxes	921	1,393	1,816	2,556
Income taxes (benefit)	98	304	194	477
Net Income	823	1,089	1,622	2,079
Net loss attributable to noncontrolling interests	(15)	(22)	(78)	(67)
Retail electric revenues
Operating Revenues:
Total operating revenues	3,859	4,789	7,458	8,402
Wholesale electric revenues
Operating Revenues:
Total operating revenues	605	937	1,203	1,601
Other electric revenues
Operating Revenues:
Total operating revenues	209	192	399	370
Natural Gas
Operating Revenues:
Total operating revenues	852	1,083	2,728	3,140
Other revenues
Operating Revenues:
Total operating revenues	223	205	440	341
Operating Expenses:
Total cost of sales	128	114	255	183
Fuel
Operating Expenses:
Total cost of sales	959	1,715	2,009	2,826
Purchased power
Operating Expenses:
Total cost of sales	231	408	473	640
SOUTHERN POWER CO
Operating Revenues:
Total operating revenues	525	899	1,033	1,438
Operating Expenses:
Other operations and maintenance	117	115	224	220
Depreciation and amortization	122	131	250	251
Taxes other than income taxes	12	12	25	25
Gain on dispositions, net	0	0	(20)	(2)
Total operating expenses	418	763	863	1,252
Operating Income	107	136	170	186
Other Income and (Expense):
Interest expense, net of amounts capitalized	(33)	(36)	(66)	(73)
Other income (expense), net	2	1	4	3
Total other income and (expense)	(31)	(35)	(62)	(70)
Earnings Before Income Taxes	76	101	108	116
Income taxes (benefit)	6	25	(1)	13
Net Income	70	76	109	103
Net loss attributable to noncontrolling interests	(15)	(22)	(78)	(67)
Net Income	85	98	187	170
SOUTHERN POWER CO | Wholesale revenues, non-affiliates
Operating Revenues:
Total operating revenues	393	658	755	1,084
SOUTHERN POWER CO | Wholesale revenues, affiliates
Operating Revenues:
Total operating revenues	116	232	251	337
SOUTHERN POWER CO | Other revenues
Operating Revenues:
Total operating revenues	16	9	27	17
SOUTHERN POWER CO | Fuel
Operating Expenses:
Total cost of sales	139	437	330	669
SOUTHERN POWER CO | Purchased power
Operating Expenses:
Total cost of sales	$ 28	$ 68	$ 54	$ 89