Condensed Statements of Cash Flows (Unaudited) - MPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Operating Activities:
Net income	$ 3,794	$ 3,053
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	3,916	3,699
Deferred income taxes	520	(52)
Pension, postretirement, and other employee benefits	(391)	(397)
Settlement of asset retirement obligations	(405)	(444)
Other, net	(100)	(26)
Changes in certain current assets and liabilities —
Receivables	(233)	524
Retail fuel cost under recovery	843	513
Fossil fuel stock	143	(254)
Other current assets	(181)	(32)
Accounts payable	(161)	(1,031)
Accrued taxes	179	376
Accrued compensation	(90)	(197)
Other current liabilities	(27)	66
Net cash provided from operating activities	7,615	5,740
Investing Activities:
Property additions	(6,206)	(6,561)
Cost of removal, net of salvage	(444)	(421)
Change in construction payables, net of joint owner portion	(119)	241
Other investing activities	(279)	(139)
Net cash used for investing activities	(6,678)	(6,721)
Financing Activities:
Payment of common stock dividends	(2,220)	(2,271)
Other financing activities	(157)	(120)
Net cash provided from (used for) financing activities	(803)	834
Net Change in Cash, Cash Equivalents, and Restricted Cash	134	(147)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	921	2,037
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,055	1,890
Supplemental Cash Flow Information:
Interest	2,015	1,694
Income taxes, net	131	11
Noncash transactions —
Accrued property additions at end of period	937	1,224
Right-of-use assets obtained under operating leases	126	76
Mississippi Power
Operating Activities:
Net income	186	173
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	153	171
Deferred income taxes	4	(10)
Pension, postretirement, and other employee benefits	(13)	(15)
Settlement of asset retirement obligations	(13)	(12)
Other, net	21	12
Changes in certain current assets and liabilities —
Receivables	(22)	55
Retail fuel cost under recovery	17	(24)
Fossil fuel stock	(10)	7
Other current assets	(13)	7
Accounts payable	(29)	(83)
Accrued taxes	(11)	(16)
Accrued compensation	(4)	(5)
Other current liabilities	(1)	0
Net cash provided from operating activities	265	260
Investing Activities:
Property additions	(220)	(231)
Cost of removal, net of salvage	(32)	(21)
Change in construction payables, net of joint owner portion	(3)	(5)
Payments pursuant to LTSAs	(15)	(21)
Other investing activities	(2)	(2)
Net cash used for investing activities	(272)	(280)
Financing Activities:
Increase in notes payable, net	50	20
Proceeds — Senior notes	250	100
Redemptions — Senior notes	(200)	0
Capital contributions from parent company	60	8
Payment of common stock dividends	(141)	(139)
Other financing activities	(2)	(1)
Net cash provided from (used for) financing activities	17	(12)
Net Change in Cash, Cash Equivalents, and Restricted Cash	10	(32)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	38	59
Cash, Cash Equivalents, and Restricted Cash at End of Period	48	27
Supplemental Cash Flow Information:
Interest	67	53
Income taxes, net	35	33
Noncash transactions —
Accrued property additions at end of period	33	20
Right-of-use assets obtained under operating leases	$ 0	$ 1