Statements of Cash Flows - GPC - 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)
Estimated loss on Plant Vogtle Units 3 and 4	(68)	183	1,692
Other, net	(138)	(25)	(89)
Changes in certain current assets and liabilities —
-Receivables	482	(771)	(77)
-Retail fuel cost under recovery	686	(100)	(4)
-Fossil fuel stock	(368)	(125)	99
-Materials and supplies	(345)	(160)	(130)
-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)
Payments pursuant to LTSAs	(99)	(190)	(188)
Other investing activities	(43)	(133)	75
Net cash used for investing activities	(9,668)	(8,430)	(7,353)
Financing Activities:
Increase (decrease) in notes payable, net	973		530
Increase (decrease) in notes payable, net		(337)
Proceeds —
Short-term borrowings	350	2,650	325
Redemptions and repurchases —
Short-term borrowings	(1,630)	(1,150)	(25)
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
Georgia Power
Operating Activities:
Net Income	2,080	1,813	584
Adjustments to reconcile consolidated net income to net cash provided from operating activities —
Depreciation and amortization, total	1,914	1,622	1,557
Deferred income taxes	184	313	(550)
Allowance for equity funds used during construction	(165)	(140)	(127)
Pension, postretirement, and other employee benefits	(272)	(240)	(148)
Settlement of asset retirement obligations	(304)	(212)	(210)
Storm damage accruals	31	213	213
Retail fuel cost under recovery – long-term	(157)	(1,646)	(410)
Estimated loss on Plant Vogtle Units 3 and 4	(68)	183	1,692
Other, net	(82)	81	53
Changes in certain current assets and liabilities —
-Receivables	(57)	(286)	81
-Retail fuel cost under recovery	308	0	0
-Fossil fuel stock	(189)	(43)	30
-Materials and supplies	(154)	(73)	(82)
-Other current assets	(63)	(83)	(30)
-Accounts payable	(206)	264	186
-Accrued taxes	74	173	21
-Retail fuel cost over recovery	0	0	(113)
-Customer refunds	(117)	113	1
-Other current liabilities	(5)	(14)	(1)
Net cash provided from operating activities	2,752	2,038	2,747
Investing Activities:
Property additions	(4,786)	(3,809)	(3,311)
Nuclear decommissioning trust fund purchases	(841)	(770)	(960)
Nuclear decommissioning trust fund sales	821	758	956
Cost of removal, net of salvage	(279)	(274)	(149)
Change in construction payables, net of joint owner portion	50	186	(65)
Payments pursuant to LTSAs	(49)	(44)	(42)
Proceeds from dispositions	59	56	8
Other investing activities	(54)	(57)	(27)
Net cash used for investing activities	(5,079)	(3,954)	(3,590)
Financing Activities:
Increase (decrease) in notes payable, net	811
Increase (decrease) in notes payable, net		0	(60)
Proceeds —
Senior notes	2,450	1,500	750
Short-term borrowings	350	2,100	0
FFB loan	0	0	440
Revenue bonds	229	200	122
Redemptions and repurchases —
Senior notes	(800)	(400)	(325)
Short-term borrowings	(1,430)	(500)	0
FFB loan	(86)	(88)	(96)
Revenue bonds	0	(53)	(69)
Other long-term debt	0	(125)	0
Capital contributions from parent company	2,291	1,471	1,782
Payment of common stock dividends	(1,855)	(1,691)	(1,649)
Other financing activities	(38)	(51)	(28)
Net cash provided from financing activities	1,922	2,363	867
Net Change in Cash, Cash Equivalents, and Restricted Cash	(405)	447	24
Cash, Cash Equivalents, and Restricted Cash at Beginning of Year	480	33	9
Cash, Cash Equivalents, and Restricted Cash at End of Year	75	480	33
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	592	432	382
Income taxes, net	220	30	305
Noncash transactions —
Accrued property additions at year-end	$ 680	$ 626	$ 479