Condensed Statements of Cash Flows (Unaudited) - APC - 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)
Pension, postretirement, and other employee benefits	(211)	(115)
Settlement of asset retirement obligations	(198)	(228)
Other, net	21	117
Changes in certain current assets and liabilities —
Receivables	(637)	29
Prepayments	(90)	(79)
Other current assets	12	94
Accounts payable	703	(177)
Accrued compensation	(260)	(238)
Other current liabilities	30	(235)
Net cash provided from operating activities	3,579	2,904
Investing Activities:
Property additions	(3,213)	(3,384)
Nuclear decommissioning trust fund purchases	(628)	(930)
Nuclear decommissioning trust fund sales	624	926
Cost of removal, net of salvage	(377)	(184)
Other investing activities	96	(20)
Net cash used for investing activities	(3,460)	(4,026)
Redemptions and repurchases —
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
Right-of-use assets obtained under leases	15	90
Alabama Power
Operating Activities:
Net income (loss)	737	697
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	494	496
Deferred income taxes	117	87
Pension, postretirement, and other employee benefits	(59)	(39)
Settlement of asset retirement obligations	(91)	(104)
Retail fuel cost under recovery – long-term	(191)	0
Other, net	(67)	(35)
Changes in certain current assets and liabilities —
Receivables	(296)	(85)
Prepayments	(69)	(53)
Other current assets	(33)	(23)
Accounts payable	14	(236)
Accrued compensation	(55)	(60)
Other current liabilities	9	(61)
Net cash provided from operating activities	510	584
Investing Activities:
Property additions	(759)	(844)
Nuclear decommissioning trust fund purchases	(180)	(473)
Nuclear decommissioning trust fund sales	180	473
Cost of removal, net of salvage	(104)	(56)
Change in construction payables, net	(8)	25
Other investing activities	(18)	(18)
Net cash used for investing activities	(889)	(893)
Proceeds —
Senior notes	700	600
Redemptions and repurchases —
Senior notes	(550)	(200)
Capital contributions from parent company	656	624
Payment of common stock dividends	(508)	(492)
Other financing activities	(71)	(26)
Net cash provided from (used for) financing activities	227	506
Net Change in Cash, Cash Equivalents, and Restricted Cash	(152)	197
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	1,060	530
Cash, Cash Equivalents, and Restricted Cash at End of Period	908	727
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	166	154
Income taxes, net	192	171
Noncash transactions —
Accrued property additions at year-end	141	191
Right-of-use assets obtained under leases	$ 6	$ 2