Condensed Statements of Cash Flows (Unaudited) - APC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating Activities:
Net income	$ 1,071	$ 799
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	1,261	1,233
Pension, postretirement, and other employee benefits	(129)	(126)
Settlement of asset retirement obligations	(132)	(113)
Retail fuel cost under recovery – long-term	0	454
Other, net	76	51
Changes in certain current assets and liabilities —
Receivables	52	790
Fossil fuel stock	(52)	(203)
Prepayments	(83)	(100)
Retail fuel cost under recovery	257	(470)
Other current assets	(27)	34
Accounts payable	(423)	(1,056)
Accrued taxes	(226)	(237)
Accrued compensation	(488)	(478)
Other current liabilities	103	75
Net cash provided from operating activities	1,311	844
Investing Activities:
Property additions	(1,770)	(1,850)
Nuclear decommissioning trust fund purchases	(404)	(256)
Nuclear decommissioning trust fund sales	403	251
Cost of removal, net of salvage	(138)	(135)
Change in construction payables, net	(365)	(140)
Other investing activities	(111)	(91)
Net cash used for investing activities	(2,385)	(2,118)
Financing Activities:
Increase in notes payable, net	236	187
Payment of common stock dividends	(733)	(742)
Other financing activities	(124)	(83)
Net cash provided from financing activities	985	454
Net Change in Cash, Cash Equivalents, and Restricted Cash	(89)	(820)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	921	2,037
Cash, Cash Equivalents, and Restricted Cash at End of Period	832	1,217
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	714	652
Noncash transactions —
Accrued property additions at end of period	580	833
Right-of-use assets obtained under finance leases	0	1
Alabama Power
Operating Activities:
Net income	333	255
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	398	398
Deferred income taxes	(38)	(75)
Pension, postretirement, and other employee benefits	(53)	(51)
Settlement of asset retirement obligations	(53)	(52)
Retail fuel cost under recovery – long-term	0	100
Other, net	8	(3)
Changes in certain current assets and liabilities —
Receivables	65	90
Fossil fuel stock	(6)	(78)
Prepayments	(94)	(89)
Retail fuel cost under recovery	73	1
Other current assets	(17)	(38)
Accounts payable	(403)	(400)
Accrued taxes	160	109
Accrued compensation	(93)	(102)
Other current liabilities	(32)	(35)
Net cash provided from operating activities	248	30
Investing Activities:
Property additions	(416)	(389)
Nuclear decommissioning trust fund purchases	(190)	(87)
Nuclear decommissioning trust fund sales	190	87
Cost of removal, net of salvage	(34)	(41)
Change in construction payables, net	(43)	(70)
Other investing activities	(3)	(9)
Net cash used for investing activities	(496)	(509)
Financing Activities:
Increase in notes payable, net	65	170
Proceeds — Other long-term debt	2	16
Redemptions — Revenue bonds	(21)	0
Capital contributions from parent company	425	325
Payment of common stock dividends	(295)	(285)
Other financing activities	(1)	(7)
Net cash provided from financing activities	175	219
Net Change in Cash, Cash Equivalents, and Restricted Cash	(73)	(260)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	409	687
Cash, Cash Equivalents, and Restricted Cash at End of Period	336	427
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	144	138
Noncash transactions —
Accrued property additions at end of period	95	111
Right-of-use assets obtained under operating leases	7	13
Right-of-use assets obtained under finance leases	$ 0	$ 1