Statements of Cash Flows - APC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Operating Activities:
Net Income	$ 3,849	$ 3,428	$ 2,309
Adjustments to reconcile consolidated net income to net cash provided from operating activities —
Depreciation and amortization, total	4,986	4,064	3,973
Deferred income taxes	63	670	(49)
Allowance for equity funds used during construction	(268)	(224)	(190)
Pension, postretirement, and other employee benefits	(527)	(436)	(305)
Settlement of asset retirement obligations	(617)	(455)	(456)
Natural disaster reserve and reliability reserve accruals	124	430	288
Retail fuel cost under recovery – long-term	(206)	(2,166)	(536)
Other, net	(138)	(25)	(89)
Changes in certain current assets and liabilities —
-Receivables	482	(771)	(77)
-Fossil fuel stock	(368)	(125)	99
-Materials and supplies	(345)	(160)	(130)
-Retail fuel cost under recovery	686	(100)	(4)
-Other current assets	(106)	(186)	(270)
-Accounts payable	(863)	1,021	(8)
-Customer refunds	(157)	119	130
-Other current liabilities	214	204	(258)
Net cash provided from operating activities	7,553	6,302	6,169
Investing Activities:
Property additions	(9,095)	(7,923)	(7,586)
Nuclear decommissioning trust fund purchases	(1,142)	(1,125)	(1,598)
Nuclear decommissioning trust fund sales	1,121	1,112	1,593
Cost of removal, net of salvage	(592)	(649)	(442)
Change in construction payables, net	18	203	(124)
Other investing activities	(43)	(133)	75
Net cash used for investing activities	(9,668)	(8,430)	(7,353)
Financing Activities:
Increase in notes payable, net	973		530
Redemptions and repurchases —
Preferred stock	0	(298)	0
Payment of common stock dividends	(3,035)	(2,907)	(2,777)
Other financing activities	(160)	(218)	(266)
Net cash provided from financing activities	999	2,336	1,945
Net Change in Cash, Cash Equivalents, and Restricted Cash	(1,116)	208	761
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year	2,037	1,829	1,068
Cash, Cash Equivalents, and Restricted Cash at End of Year	921	2,037	1,829
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	2,184	1,758	1,718
Income taxes, net	132	146	93
Noncash transactions —
Accrued property additions at year-end	1,027	1,024	866
Alabama Power
Operating Activities:
Net Income	1,370	1,351	1,253
Adjustments to reconcile consolidated net income to net cash provided from operating activities —
Depreciation and amortization, total	1,554	1,014	1,005
Deferred income taxes	(242)	355	245
Allowance for equity funds used during construction	(82)	(70)	(52)
Pension, postretirement, and other employee benefits	(204)	(118)	(106)
Settlement of asset retirement obligations	(270)	(205)	(202)
Natural disaster reserve and reliability reserve accruals	70	185	75
Retail fuel cost under recovery – long-term	0	(520)	(126)
Other, net	4	(50)	(53)
Changes in certain current assets and liabilities —
-Receivables	(24)	(321)	42
-Fossil fuel stock	(165)	(70)	76
-Materials and supplies	(105)	(7)	(6)
-Retail fuel cost under recovery	376	(102)	0
-Other current assets	(20)	(23)	(31)
-Accounts payable	(162)	249	(109)
-Customer refunds	(39)	5	128
-Other current liabilities	18	(34)	(86)
Net cash provided from operating activities	2,079	1,639	2,053
Investing Activities:
Property additions	(2,022)	(2,016)	(1,753)
Nuclear decommissioning trust fund purchases	(301)	(355)	(638)
Nuclear decommissioning trust fund sales	300	354	637
Cost of removal, net of salvage	(178)	(234)	(165)
Change in construction payables, net	(44)	50	(16)
Other investing activities	49	(62)	(26)
Net cash used for investing activities	(2,196)	(2,263)	(1,961)
Financing Activities:
Increase in notes payable, net	40	0	0
Proceeds —
Senior notes	500	1,700	1,300
Revenue bonds	326	0	0
Other long-term debt	29	0	0
Redemptions and repurchases —
Senior notes	(300)	(750)	(200)
Preferred stock	0	(298)	0
Revenue bonds	0	0	(65)
Other long-term debt	0	0	(206)
Capital contributions from parent company	407	649	636
Payment of common stock dividends	(1,141)	(1,016)	(984)
Other financing activities	(22)	(34)	(43)
Net cash provided from financing activities	(161)	251	438
Net Change in Cash, Cash Equivalents, and Restricted Cash	(278)	(373)	530
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year	687	1,060	530
Cash, Cash Equivalents, and Restricted Cash at End of Year	409	687	1,060
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	397	342	308
Income taxes, net	315	121	185
Noncash transactions —
Accrued property additions at year-end	$ 138	$ 182	$ 150