Consolidated Statements of Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Revenues:
Total operating revenues	$ 29,279	$ 23,113	$ 20,375
Operating Expenses:
Other operations and maintenance	6,630	6,088	5,413
Depreciation and amortization	3,663	3,565	3,518
Taxes other than income taxes	1,411	1,290	1,234
Gain on dispositions, net	(57)	(186)	(65)
Total operating expenses	23,909	19,415	15,490
Operating Income	5,370	3,698	4,885
Other Income and (Expense):
Interest expense, net of amounts capitalized	(2,022)	(1,837)	(1,821)
Other income (expense), net	500	456	336
Total other income and (expense)	(1,147)	(1,122)	(1,389)
Earnings Before Income Taxes	4,223	2,576	3,496
Income taxes (benefit)	795	267	393
Net Income (Loss)	3,428	2,309	3,103
Net loss attributable to noncontrolling interests	(107)	(99)	(31)
Other revenues
Operating Revenues:
Total operating revenues	732	708	681
Operating Expenses:
Cost of sales	396	357	327
Fuel
Operating Expenses:
Cost of sales	6,835	4,010	2,967
Purchased power
Operating Expenses:
Cost of sales	1,593	978	799
Southern Power
Operating Revenues:
Total operating revenues	3,369	2,216	1,733
Operating Expenses:
Other operations and maintenance	482	423	353
Depreciation and amortization	516	517	494
Taxes other than income taxes	49	45	39
Loss on sales-type leases	1	40	0
Gain on dispositions, net	(2)	(41)	(39)
Total operating expenses	2,971	1,925	1,391
Operating Income	398	291	342
Other Income and (Expense):
Interest expense, net of amounts capitalized	(138)	(147)	(151)
Other income (expense), net	7	10	19
Total other income and (expense)	(131)	(137)	(132)
Earnings Before Income Taxes	267	154	210
Income taxes (benefit)	20	(13)	3
Net Income (Loss)	247	167	207
Net loss attributable to noncontrolling interests	(107)	(99)	(31)
Net Income (Loss) Attributable to Parent, Total	354	266	238
Southern Power | Wholesale revenues
Operating Revenues:
Total operating revenues	2,458	1,671	1,355
Southern Power | Other revenues
Operating Revenues:
Total operating revenues	36	30	14
Southern Power | Fuel
Operating Expenses:
Cost of sales	1,614	802	470
Southern Power | Purchased power
Operating Expenses:
Cost of sales	$ 311	$ 139	$ 74