Condensed Consolidated Statements of Income (Unaudited) - GAS - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Revenues:
Total operating revenues	$ 6,646	$ 6,480
Operating Expenses:
Other operations and maintenance	1,472	1,440
Depreciation and amortization	1,145	1,111
Taxes other than income taxes	396	394
Total operating expenses	4,943	5,262
Operating Income	1,703	1,218
Other Income and (Expense):
Earnings from equity method investments	45	48
Interest expense, net of amounts capitalized	(665)	(582)
Other income (expense), net	153	147
Total other income and (expense)	(409)	(322)
Earnings Before Income Taxes	1,294	896
Income taxes (benefit)	223	97
Consolidated Net Income	1,071	799
SOUTHERN Co GAS
Operating Revenues:
Total operating revenues	$ 1,707	$ 1,875
Revenue, Product and Service [Extensible Enumeration]	Natural gas	Natural gas
Operating Expenses:
Cost, Product and Service [Extensible Enumeration]	Natural gas	Natural gas
Total cost of sales	$ 605	$ 898
Other operations and maintenance	293	305
Depreciation and amortization	155	141
Taxes other than income taxes	87	102
Total operating expenses	1,140	1,446
Operating Income	567	429
Other Income and (Expense):
Earnings from equity method investments	44	45
Interest expense, net of amounts capitalized	(84)	(76)
Other income (expense), net	20	14
Total other income and (expense)	(20)	(17)
Earnings Before Income Taxes	547	412
Income taxes (benefit)	138	103
Consolidated Net Income	$ 409	$ 309