Balance Sheets (Unaudited) - MEC - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Inventories	1,129	1,168
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Regulatory assets	3,372	3,157
Investments and restricted cash and cash equivalents and investments	15,218	14,320
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
Regulatory liabilities	6,958	7,221
Deferred income taxes	12,910	11,775
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,374	6,377
Retained earnings	39,199	35,093
Total shareholder's equity, parent	45,692	43,010
Total liabilities and equity	131,554	127,316
MEC
Current assets:
Cash and cash equivalents	541	38
Trade receivables, net	555	234
Inventories	244	278
Other current assets	142	73
Total current assets	1,482	623
Property, plant and equipment, net	19,773	19,279
Regulatory assets	479	392
Investments and restricted cash and cash equivalents and investments	975	911
Other assets	235	232
Total assets	22,944	21,437
Current liabilities:
Accounts payable	347	408
Accrued interest	89	78
Accrued property, income and other taxes	242	161
Other current liabilities	226	183
Total current liabilities	904	830
Long-term debt	7,716	7,210
Regulatory liabilities	943	1,111
Deferred income taxes	3,407	3,054
Asset retirement obligations	677	709
Other long-term liabilities	495	458
Total liabilities	14,142	13,372
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	561	561
Retained earnings	8,241	7,504
Total shareholder's equity, parent	8,802	8,065
Total liabilities and equity	$ 22,944	$ 21,437