Condensed Balance Sheets (Unaudited) - MPC - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Current Assets:
Cash and cash equivalents	$ 1,676	$ 1,917
Receivables —
Customer accounts, net and Affiliated	2,230	2,128
Unbilled revenues	547	1,012
Other accounts and notes	553	637
Fossil fuel stock	829	575
Materials and supplies	1,913	1,664
Other regulatory assets	996	968
Other current assets	544	344
Total current assets	11,088	10,416
Property, Plant, and Equipment:
In service	125,573	117,529
Less: Accumulated depreciation	37,199	35,297
Plant in service, net of depreciation	88,374	82,232
Construction work in progress	8,496	10,896
Total property, plant, and equipment	98,254	94,570
Other Property and Investments:
Total other property and investments	9,772	9,757
Deferred Charges and Other Assets:
Deferred charges related to income taxes	889	866
Prepaid pension costs	2,574	2,290
Regulatory assets – asset retirement obligations	5,629	5,764
Other regulatory assets, deferred	5,666	5,918
Other deferred charges and assets	1,479	1,485
Total deferred charges and other assets	19,207	20,148
Total Assets	138,321	134,891
Current Liabilities:
Securities due within one year	3,076	4,285
Notes payable	1,726	2,609
Accounts payable —
Accrued compensation	936	1,127
Asset retirement obligations	727	694
Other regulatory liabilities	163	382
Other current liabilities	943	787
Total current liabilities	13,214	15,724
Long-term Debt	56,003	50,656
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	10,774	10,036
Deferred credits related to income taxes	4,813	5,235
Employee benefit obligations	1,184	1,238
Asset retirement obligations, deferred	9,872	10,146
Other cost of removal obligations	1,940	1,903
Other regulatory liabilities, deferred	660	733
Other deferred credits and liabilities	1,166	1,167
Total deferred credits and other liabilities	33,800	33,979
Total Liabilities	103,017	100,359
Total Liabilities and Stockholders' Equity	138,321	134,891
Mississippi Power
Current Assets:
Cash and cash equivalents	27	59
Receivables —
Unbilled revenues	41	47
Other accounts and notes	22	35
Fossil fuel stock	37	44
Materials and supplies	85	80
Other regulatory assets	54	72
Other current assets	10	38
Total current assets	392	504
Property, Plant, and Equipment:
In service	5,473	5,254
Less: Accumulated depreciation	1,763	1,689
Plant in service, net of depreciation	3,710	3,565
Construction work in progress	183	208
Total property, plant, and equipment	3,893	3,773
Other Property and Investments:
Total other property and investments	160	167
Deferred Charges and Other Assets:
Deferred charges related to income taxes	29	30
Prepaid pension costs	123	109
Regulatory assets – asset retirement obligations	241	239
Other regulatory assets, deferred	246	249
Accumulated deferred income taxes	95	107
Other deferred charges and assets	79	94
Total deferred charges and other assets	813	828
Total Assets	5,258	5,272
Current Liabilities:
Securities due within one year	201	1
Notes payable	20	0
Accounts payable —
Accrued taxes	108	124
Accrued compensation	32	37
Asset retirement obligations	26	37
Other regulatory liabilities	30	43
Other current liabilities	74	85
Total current liabilities	631	554
Long-term Debt	1,443	1,544
Deferred Credits and Other Liabilities:
Accumulated deferred income taxes	466	466
Deferred credits related to income taxes	229	253
Employee benefit obligations	67	69
Asset retirement obligations, deferred	145	142
Other cost of removal obligations	192	196
Other regulatory liabilities, deferred	81	96
Other deferred credits and liabilities	30	21
Total deferred credits and other liabilities	1,210	1,243
Total Liabilities	3,284	3,341
Total common stockholders' equity	1,974	1,931
Total Liabilities and Stockholders' Equity	5,258	5,272
Mississippi Power | Nonrelated Party
Receivables —
Customer accounts, net and Affiliated	78	47
Accounts payable —
Affiliated and Other	61	106
Mississippi Power | Related Party
Receivables —
Customer accounts, net and Affiliated	38	82
Accounts payable —
Affiliated and Other	$ 79	$ 121