Statements of Income - MPC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Operating Revenues:
Total operating revenues	$ 29,279	$ 23,113	$ 20,375
Operating Expenses:
Other operations and maintenance	6,630	6,088	5,413
Depreciation and amortization	3,663	3,565	3,518
Taxes other than income taxes	1,411	1,290	1,234
Total operating expenses	23,909	19,415	15,490
Operating Income	5,370	3,698	4,885
Other Income and (Expense):
Interest expense, net of amounts capitalized	(2,022)	(1,837)	(1,821)
Other income (expense), net	500	456	336
Total other income and (expense)	(1,147)	(1,122)	(1,389)
Earnings Before Income Taxes	4,223	2,576	3,496
Income taxes (benefit)	795	267	393
Net Income (Loss)	3,428	2,309	3,103
Retail electric revenues
Operating Revenues:
Total operating revenues	18,197	14,852	13,643
Other revenues
Operating Revenues:
Total operating revenues	732	708	681
Operating Expenses:
Cost of sales	396	357	327
Mississippi Power
Operating Revenues:
Total operating revenues	1,694	1,322	1,172
Operating Expenses:
Other operations and maintenance	376	313	284
Depreciation and amortization	181	180	183
Taxes other than income taxes	124	128	124
Total operating expenses	1,470	1,117	963
Operating Income	224	205	209
Other Income and (Expense):
Interest expense, net of amounts capitalized	(56)	(60)	(60)
Other income (expense), net	33	35	17
Total other income and (expense)	(23)	(25)	(43)
Earnings Before Income Taxes	201	180	166
Income taxes (benefit)	37	21	14
Net Income (Loss)	164	159	152
Mississippi Power | Retail electric revenues
Operating Revenues:
Total operating revenues	935	875	821
Mississippi Power | Wholesale revenues
Operating Revenues:
Total operating revenues	252	230	215
Mississippi Power | Wholesale revenues, affiliates
Operating Revenues:
Total operating revenues	460	188	111
Mississippi Power | Other revenues
Operating Revenues:
Total operating revenues	47	29	25
Mississippi Power | Fuel and purchased power
Operating Expenses:
Cost of sales	$ 789	$ 496	$ 372