Balance Sheets (Unaudited) - MEC - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,331	$ 1,290
Inventories	1,113	1,168
Other current assets	2,496	2,423
Total current assets	10,242	9,447
Regulatory assets	3,344	3,157
Investments and restricted cash and cash equivalents and investments	14,960	14,320
Other assets	2,823	2,758
Total assets	130,561	127,316
Current liabilities:
Accounts payable	1,802	1,867
Accrued interest	549	555
Accrued property, income and other taxes	711	582
Other current liabilities	2,107	1,626
Total current liabilities	9,080	9,138
Regulatory liabilities	7,344	7,221
Deferred income taxes	12,464	11,775
Other long-term liabilities	4,353	4,178
Total liabilities	81,196	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,377
Retained earnings	37,303	35,093
Total shareholder's equity, parent	45,412	43,010
Total liabilities and equity	130,561	127,316
MEC
Current assets:
Cash and cash equivalents	30	38
Trade receivables, net	508	234
Income tax receivable	49	0
Inventories	237	278
Other current assets	91	73
Total current assets	915	623
Property, plant and equipment, net	19,473	19,279
Regulatory assets	455	392
Investments and restricted cash and cash equivalents and investments	977	911
Other assets	237	232
Total assets	22,057	21,437
Current liabilities:
Accounts payable	288	408
Accrued interest	78	78
Accrued property, income and other taxes	267	161
Other current liabilities	188	183
Total current liabilities	821	830
Long-term debt	7,224	7,210
Regulatory liabilities	1,254	1,111
Deferred income taxes	3,164	3,054
Asset retirement obligations	709	709
Other long-term liabilities	459	458
Total liabilities	13,631	13,372
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	561	561
Retained earnings	7,865	7,504
Total shareholder's equity, parent	8,426	8,065
Total liabilities and equity	$ 22,057	$ 21,437