Condensed Statements of Cash Flows (Unaudited) - MPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating Activities:
Net income (loss)	$ 799	$ 991
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	1,233	989
Settlement of asset retirement obligations	(113)	(87)
Other, net	51	79
Changes in certain current assets and liabilities —
Receivables	319	(217)
Other current assets	143	8
Accounts payable	(1,056)	132
Accrued taxes	(237)	(58)
Accrued compensation	(478)	(470)
Other current liabilities	(28)	35
Net cash provided from operating activities	844	1,592
Investing Activities:
Property additions	(1,850)	(1,419)
Construction payables	(140)	23
Other investing activities	(91)	(18)
Net cash used for investing activities	(2,118)	(1,555)
Financing Activities:
Increase in notes payable, net	187	137
Payment of common stock dividends	(742)	(702)
Other financing activities	(83)	(115)
Net cash provided from (used for) financing activities	454	(193)
Net Change in Cash, Cash Equivalents, and Restricted Cash	(820)	(156)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	2,037	1,829
Cash, Cash Equivalents, and Restricted Cash at End of Period	1,217	1,673
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	652	515
Noncash transactions —
Noncash transactions — Accrued property additions at end of period	833	863
Right-of-use assets obtained under operating leases	26	3
Mississippi Power
Operating Activities:
Net income (loss)	58	42
Adjustments to reconcile net income to net cash provided from operating activities —
Depreciation and amortization, total	58	55
Settlement of asset retirement obligations	(3)	(5)
Other, net	(5)	17
Changes in certain current assets and liabilities —
Receivables	73	(7)
Retail fuel cost under recovery	(23)	(11)
Other current assets	(1)	(11)
Accounts payable	(74)	(9)
Accrued taxes	(62)	(63)
Accrued compensation	(17)	(18)
Other current liabilities	(7)	(6)
Net cash provided from operating activities	(3)	(16)
Investing Activities:
Property additions	(94)	(45)
Construction payables	(9)	(8)
Payments pursuant to LTSAs	(8)	(8)
Other investing activities	(6)	(7)
Net cash used for investing activities	(117)	(68)
Financing Activities:
Increase in notes payable, net	126	25
Capital contributions from parent company	0	50
Payment of common stock dividends	(46)	(43)
Other financing activities	(1)	0
Net cash provided from (used for) financing activities	79	32
Net Change in Cash, Cash Equivalents, and Restricted Cash	(41)	(52)
Cash, Cash Equivalents, and Restricted Cash at Beginning of Period	59	61
Cash, Cash Equivalents, and Restricted Cash at End of Period	18	9
Supplemental Cash Flow Information:
Interest, net of amounts capitalized	25	22
Noncash transactions —
Noncash transactions — Accrued property additions at end of period	13	17
Right-of-use assets obtained under operating leases	$ 1	$ 0