Condensed Consolidated Statements of Cash Flows (Unaudited) - Southern - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Operating Activities:
Net income (loss)	$ 2,079	$ 1,482
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	1,995	1,949
Deferred income taxes	240	(101)
Utilization of federal investment tax credits	281	224
Allowance for equity funds used during construction	(104)	(90)
Mark-to-market adjustments	14	136
Pension, postretirement, and other employee benefits	(211)	(115)
Settlement of asset retirement obligations	(198)	(228)
Stock based compensation expense	100	105
Estimated loss on Plant Vogtle Units 3 and 4	52	508
Storm damage accruals	107	112
Natural gas cost under recovery – long-term	192	(119)
Retail fuel cost under recovery – long-term	(729)	0
Other, net	21	117
Changes in certain current assets and liabilities —
Receivables	(637)	29
Prepayments	(90)	(79)
Materials and supplies	(109)	(57)
Natural gas for sale, net of temporary LIFO liquidation	335	375
Natural gas cost under recovery	(94)	(485)
Other current assets	12	94
Accounts payable	703	(177)
Accrued taxes	(150)	(157)
Accrued compensation	(260)	(238)
Retail fuel cost over recovery	0	(146)
Other current liabilities	30	(235)
Net cash provided from operating activities	3,579	2,904
Investing Activities:
Business acquisitions, net of cash acquired	0	(345)
Property additions	(3,213)	(3,384)
Nuclear decommissioning trust fund purchases	(628)	(930)
Nuclear decommissioning trust fund sales	624	926
Proceeds from dispositions	119	25
Cost of removal, net of salvage	(377)	(184)
Payments pursuant to LTSAs	(81)	(114)
Other investing activities	96	(20)
Net cash used for investing activities	(3,460)	(4,026)
Financing Activities:
Increase (decrease) in notes payable, net	263	492
Proceeds —
Long-term debt	2,200	4,646
Short-term borrowings	1,200	325
Common stock	61	24
Redemptions and repurchases —
Long-term debt	(1,851)	(2,477)
Short-term borrowings	(400)	(25)
Capital contributions from noncontrolling interests	73	343
Distributions to noncontrolling interests	(115)	(113)
Payment of common stock dividends	(1,425)	(1,377)
Other financing activities	(219)	(167)
Net cash provided from (used for) financing activities	(213)	1,671
Net Change in Cash, Cash Equivalents, and Restricted Cash	(94)	549
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	1,829	1,068
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,735	1,617
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	836	884
Income taxes, net	157	88
Noncash transactions —
Accrued property additions at year-end	837	943
Contributions from noncontrolling interests	0	89
Contributions of wind turbine equipment	0	82
Right-of-use assets obtained under leases	15	90
Reassessment of right-of-use assets under operating leases	$ 40	$ 0