Condensed Consolidated Balance Sheets (Unaudited) - GAS - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 1,053	$ 1,917
Receivables —
Customer accounts	1,890	2,128
Unbilled revenues	596	1,012
Other accounts and notes	510	637
Accumulated provision for uncollectible accounts	(80)	(71)
Natural gas for sale	216	438
Prepaid expenses	626	347
Natural gas cost under recovery	0	108
Other regulatory assets	936	860
Other current assets	395	344
Total current assets	9,555	10,416
Property, Plant, and Equipment:
In service	118,690	117,529
Less: Accumulated depreciation	35,990	35,297
Plant in service, net of depreciation	82,700	82,232
Construction work in progress	11,510	10,896
Total property, plant, and equipment	95,630	94,570
Other Property and Investments:
Goodwill	5,161	5,161
Equity investments in unconsolidated subsidiaries	1,408	1,443
Other intangible assets, net of amortization	397	406
Miscellaneous property and investments	616	602
Total other property and investments	9,827	9,757
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	1,505	1,531
Prepaid pension costs	2,384	2,290
Other regulatory assets, deferred	5,886	5,918
Other deferred charges and assets	1,456	1,485
Total deferred charges and other assets	19,744	20,148
Total Assets	134,756	134,891
Current Liabilities:
Securities due within one year	4,363	4,285
Notes payable	2,554	2,609
Accounts payable —
Customer deposits	475	502
Accrued interest	487	614
Accrued compensation	617	1,127
Natural gas cost over recovery	117	0
Other regulatory liabilities	287	382
Other current liabilities	915	787
Total current liabilities	13,893	15,724
Long-term Debt	52,060	50,656
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	10,488	10,036
Deferred credits related to income taxes	5,107	5,235
Employee benefit obligations	1,222	1,238
Operating lease obligations, deferred	1,374	1,388
Other cost of removal obligations	1,921	1,903
Other deferred credits and liabilities	1,118	1,167
Total deferred credits and other liabilities	34,241	33,979
Total Liabilities	100,194	100,359
Total Stockholders' Equity	34,562	34,532
Total Liabilities and Stockholders' Equity	134,756	134,891
SOUTHERN Co GAS
Current Assets:
Cash and cash equivalents	88	81
Receivables —
Customer accounts	586	616
Unbilled revenues	218	453
Other accounts and notes	73	76
Accumulated provision for uncollectible accounts	(58)	(50)
Natural gas for sale	216	438
Prepaid expenses	74	93
Natural gas cost under recovery	0	108
Other regulatory assets	126	119
Other current assets	118	104
Total current assets	1,441	2,038
Property, Plant, and Equipment:
In service	19,918	19,723
Less: Accumulated depreciation	5,350	5,276
Plant in service, net of depreciation	14,568	14,447
Construction work in progress	996	909
Total property, plant, and equipment	15,564	15,356
Other Property and Investments:
Goodwill	5,015	5,015
Equity investments in unconsolidated subsidiaries	1,282	1,276
Other intangible assets, net of amortization	23	26
Miscellaneous property and investments	29	28
Total other property and investments	6,349	6,345
Deferred Charges and Other Assets:
Operating lease right-of-use assets, net of amortization	55	57
Prepaid pension costs	190	183
Other regulatory assets, deferred	478	497
Other deferred charges and assets	145	145
Total deferred charges and other assets	868	882
Total Assets	24,222	24,621
Current Liabilities:
Securities due within one year	401	400
Notes payable	120	768
Accounts payable —
Affiliated	91	104
Other	361	701
Customer deposits	99	125
Accrued taxes	113	77
Accrued interest	69	67
Accrued compensation	68	105
Temporary LIFO liquidation	45	0
Natural gas cost over recovery	117	0
Other regulatory liabilities	104	36
Other current liabilities	208	187
Total current liabilities	1,796	2,570
Long-term Debt	7,055	7,042
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	1,583	1,560
Deferred credits related to income taxes	781	788
Employee benefit obligations	112	120
Operating lease obligations, deferred	50	51
Other cost of removal obligations	1,725	1,707
Accrued environmental remediation	200	207
Other deferred credits and liabilities	167	179
Total deferred credits and other liabilities	4,618	4,612
Total Liabilities	13,469	14,224
Total Stockholders' Equity	10,753	10,397
Total Liabilities and Stockholders' Equity	$ 24,222	$ 24,621