Statements of Operations (Unaudited) - MEC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating revenue:
Total operating revenue	$ 6,612	$ 6,064	$ 12,642	$ 12,145
Operating expenses:
Cost of sales	1,525	1,110	2,985	2,679
Total operating expenses	5,405	4,856	10,199	9,604
Operating income	1,207	1,208	2,443	2,541
Other income (expense):
Interest expense	(550)	(532)	(1,082)	(1,062)
Allowance for equity funds	42	30	80	56
Other, net	(26)	48	(21)	56
Total other income (expense)	2,042	1,552	336	(27)
Income (loss) before income tax expense (benefit) and equity income (loss)	3,249	2,760	2,779	2,514
Income tax expense (benefit)	149	327	(358)	(208)
Net income (loss) attributable to parent	2,897	2,281	2,768	2,285
MEC
Operating revenue:
Total operating revenue	897	693	1,902	1,760
Operating expenses:
Operations and maintenance	200	184	392	377
Depreciation and amortization	277	209	527	416
Property and other taxes	36	37	76	73
Total operating expenses	807	590	1,712	1,609
Operating income	90	103	190	151
Other income (expense):
Interest expense	(78)	(74)	(156)	(148)
Allowance for borrowed funds	5	2	9	4
Allowance for equity funds	14	8	29	14
Other, net	(12)	15	(15)	26
Total other income (expense)	(71)	(49)	(133)	(104)
Income (loss) before income tax expense (benefit) and equity income (loss)	19	54	57	47
Income tax expense (benefit)	(188)	(159)	(394)	(313)
Net income (loss) attributable to parent	207	213	451	360
Regulated electric | MEC
Operating revenue:
Total operating revenue	725	586	1,333	1,131
Operating expenses:
Cost of sales	174	103	299	254
Regulated natural gas and other | MEC
Operating revenue:
Total operating revenue	172	107	569	629
Operating expenses:
Cost of sales	$ 120	$ 57	$ 418	$ 489