Condensed Consolidated Statements of Income (Unaudited) - GAS - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating Revenues:
Total operating revenues	$ 8,378	$ 6,238	$ 22,232	$ 17,346
Operating Expenses:
Other operations and maintenance	1,547	1,446	4,621	4,257
Depreciation and amortization	922	896	2,728	2,658
Taxes other than income taxes	352	312	1,073	969
Gain on dispositions, net	(20)	(125)	(53)	(179)
Total operating expenses	6,185	4,515	17,000	13,317
Operating Income	2,193	1,723	5,232	4,029
Other Income and (Expense):
Earnings from equity method investments	28	30	109	35
Interest expense, net of amounts capitalized	(511)	(451)	(1,461)	(1,352)
Other income (expense), net	132	131	414	290
Total other income and (expense)	(292)	(241)	(775)	(887)
Earnings Before Income Taxes	1,901	1,482	4,457	3,142
Income taxes (benefit)	414	372	891	550
Consolidated Net Income	1,487	1,110	3,566	2,592
Retail electric revenues
Operating Revenues:
Total operating revenues	5,961	4,551	14,363	11,492
Wholesale Electric
Operating Revenues:
Total operating revenues	1,197	731	2,798	1,822
Other electric revenues
Operating Revenues:
Total operating revenues	185	179	554	525
Natural Gas
Operating Revenues:
Total operating revenues	857	623	3,998	2,994
Natural gas
Operating Expenses:
Total cost of sales	294	129	1,840	943
Alternative revenue programs
Operating Revenues:
Total operating revenues	(1)	(1)	0	3
Other revenues
Operating Revenues:
Total operating revenues	178	154	519	513
Operating Expenses:
Total cost of sales	92	71	275	255
SOUTHERN Co GAS
Operating Revenues:
Total operating revenues	$ 857	$ 623	$ 3,998	$ 2,994
Operating Expenses:
Cost, Product and Service [Extensible Enumeration]	Natural gas	Natural gas	Natural gas	Natural gas
Other operations and maintenance	$ 252	$ 238	$ 829	$ 776
Depreciation and amortization	140	133	414	396
Taxes other than income taxes	45	36	208	166
Gain on dispositions, net	0	(121)	(5)	(127)
Total operating expenses	731	415	3,286	2,154
Operating Income	126	208	712	840
Other Income and (Expense):
Earnings from equity method investments	34	25	105	14
Interest expense, net of amounts capitalized	(65)	(57)	(187)	(175)
Other income (expense), net	15	13	47	(66)
Total other income and (expense)	(16)	(19)	(35)	(227)
Earnings Before Income Taxes	110	189	677	613
Income taxes (benefit)	27	133	161	224
Consolidated Net Income	83	56	516	389
SOUTHERN Co GAS | Natural gas
Operating Revenues:
Total operating revenues	858	624	3,998	2,991
Operating Expenses:
Total cost of sales	294	129	1,840	943
SOUTHERN Co GAS | Alternative revenue programs
Operating Revenues:
Total operating revenues	$ (1)	$ (1)	$ 0	$ 3