Condensed Statements of Cash Flows (Unaudited) - MPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Operating Activities:
Consolidated net income	$ 3,053	$ 3,566
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	3,699	3,084
Deferred income taxes	(52)	608
Pension, postretirement, and other employee benefits	(397)	(322)
Settlement of asset retirement obligations	(444)	(314)
Other, net	(67)	(119)
Changes in certain current assets and liabilities —
Receivables	524	(316)
Retail fuel cost under recovery	513	(104)
Other current assets	(32)	(310)
Accounts payable	(1,031)	805
Accrued taxes	376	167
Accrued compensation	(197)	(123)
Other current liabilities	66	(82)
Net cash provided from operating activities	5,740	5,017
Investing Activities:
Property additions	(6,561)	(5,502)
Cost of removal, net of salvage	(421)	(518)
Construction payables	241	15
Other investing activities	(139)	(63)
Net cash used for investing activities	(6,721)	(5,952)
Financing Activities:
Payment of common stock dividends	(2,271)	(2,166)
Other financing activities	(141)	(235)
Net cash provided from financing activities	834	1,119
Net Change in Cash, Cash Equivalents, and Restricted Cash	(147)	184
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	2,037	1,829
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,890	2,013
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	1,694	1,425
Income taxes, net	11	160
Noncash transactions —
Accrued property additions at end of period	1,224	872
Right-of-use assets obtained under operating leases	76	27
Mississippi Power
Operating Activities:
Consolidated net income	173	150
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	171	164
Deferred income taxes	(10)	(4)
Pension, postretirement, and other employee benefits	(15)	(12)
Settlement of asset retirement obligations	(12)	(15)
Other, net	12	36
Changes in certain current assets and liabilities —
Receivables	55	(49)
Retail fuel cost under recovery	(24)	(9)
Other current assets	14	(17)
Accounts payable	(83)	41
Accrued taxes	(16)	(3)
Accrued compensation	(5)	(5)
Other current liabilities	0	2
Net cash provided from operating activities	260	279
Investing Activities:
Property additions	(231)	(165)
Cost of removal, net of salvage	(21)	(20)
Construction payables	(5)	(9)
Payments pursuant to LTSAs	(21)	(23)
Other investing activities	(2)	(2)
Net cash used for investing activities	(280)	(219)
Financing Activities:
Increase in notes payable, net	20	0
Proceeds — Senior notes	100	0
Capital contributions from parent company	8	55
Payment of common stock dividends	(139)	(128)
Other financing activities	(1)	1
Net cash provided from financing activities	(12)	(72)
Net Change in Cash, Cash Equivalents, and Restricted Cash	(32)	(12)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	59	61
Cash, Cash Equivalents, and Restricted Cash at End of Period	27	49
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	53	49
Income taxes, net	33	18
Noncash transactions —
Accrued property additions at end of period	20	16
Right-of-use assets obtained under operating leases	1	0
GEORGIA POWER CO
Operating Activities:
Consolidated net income	1,547	1,851
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	1,411	1,211
Deferred income taxes	102	266
Pension, postretirement, and other employee benefits	(207)	(178)
Settlement of asset retirement obligations	(228)	(149)
Other, net	(12)	(22)
Changes in certain current assets and liabilities —
Receivables	(311)	(321)
Retail fuel cost under recovery	204	0
Other current assets	16	(72)
Accounts payable	(142)	211
Accrued taxes	118	151
Other current liabilities	16	(79)
Net cash provided from operating activities	1,969	1,482
Investing Activities:
Property additions	(3,501)	(2,556)
Cost of removal, net of salvage	(191)	(250)
Other investing activities	(76)	(47)
Net cash used for investing activities	(3,376)	(2,653)
Financing Activities:
Increase in notes payable, net	50	415
Proceeds — Senior notes	1,750	1,500
Capital contributions from parent company	1,837	813
Payment of common stock dividends	(1,392)	(1,268)
Other financing activities	(27)	(45)
Net cash provided from financing activities	1,183	1,171
Net Change in Cash, Cash Equivalents, and Restricted Cash	(224)	0
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	480	33
Cash, Cash Equivalents, and Restricted Cash at End of Period	256	33
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	439	332
Income taxes, net	74	151
Noncash transactions —
Accrued property additions at end of period	942	609
Right-of-use assets obtained under operating leases	$ 17	$ 7