Condensed Statements of Cash Flows (Unaudited) - MPC - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Operating Activities:
Net income	$ 2,259	$ 1,622
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	2,572	2,436
Deferred income taxes	243	(34)
Pension, postretirement, and other employee benefits	(232)	(245)
Settlement of asset retirement obligations	(267)	(276)
Other, net	(95)	(24)
Changes in certain current assets and liabilities —
Receivables	(284)	758
Retail fuel cost under recovery	421	(67)
Fossil fuel stock	8	(308)
Other current assets	(94)	40
Accounts payable	(247)	(997)
Accrued compensation	(372)	(378)
Other current liabilities	185	101
Net cash provided from operating activities	3,999	2,900
Investing Activities:
Property additions	(3,895)	(3,898)
Cost of removal, net of salvage	(282)	(270)
Change in construction payables, net of joint owner portion	(217)	(140)
Other investing activities	(172)	(100)
Net cash used for investing activities	(4,222)	(4,288)
Financing Activities:
Payment of common stock dividends	(1,487)	(1,506)
Other financing activities	(192)	(187)
Net cash provided from financing activities	513	1,595
Net Change in Cash, Cash Equivalents, and Restricted Cash	290	207
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	921	2,037
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,211	2,244
Supplemental Cash Flow Information:
Interest	1,235	1,043
Income taxes, net	62	(40)
Noncash transactions —
Accrued property additions at end of period	805	810
Right-of-use assets obtained under operating leases	98	44
Mississippi Power
Operating Activities:
Net income	111	98
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	101	113
Deferred income taxes	(5)	(8)
Pension, postretirement, and other employee benefits	(8)	(10)
Settlement of asset retirement obligations	(9)	(7)
Other, net	7	4
Changes in certain current assets and liabilities —
Receivables	(26)	73
Retail fuel cost under recovery	7	(23)
Fossil fuel stock	(22)	(14)
Other current assets	(4)	3
Accounts payable	(16)	(79)
Accrued taxes	(41)	(61)
Accrued compensation	(16)	(14)
Other current liabilities	6	7
Net cash provided from operating activities	85	82
Investing Activities:
Property additions	(165)	(164)
Cost of removal, net of salvage	(21)	(10)
Change in construction payables, net of joint owner portion	(20)	(3)
Payments pursuant to LTSAs	(10)	(15)
Other investing activities	(2)	(1)
Net cash used for investing activities	(218)	(193)
Financing Activities:
Increase in notes payable, net	102	53
Proceeds — Senior notes	250	100
Redemptions — Senior notes	(200)	0
Capital contributions from parent company	58	11
Payment of common stock dividends	(94)	(93)
Other financing activities	(2)	0
Net cash provided from financing activities	114	71
Net Change in Cash, Cash Equivalents, and Restricted Cash	(19)	(40)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	38	59
Cash, Cash Equivalents, and Restricted Cash at End of Period	19	19
Supplemental Cash Flow Information:
Interest	38	34
Income taxes, net	24	31
Noncash transactions —
Accrued property additions at end of period	16	22
Right-of-use assets obtained under operating leases	$ 0	$ 1