Statements of Operations - MEC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Operating revenue:
Total operating revenue	$ 4,894	$ 4,993	$ 9,504	$ 9,433
Cost of sales	1,027	1,126	2,241	2,294
Operating expenses:
Total operating expenses	3,935	4,021	7,626	7,590
Operating income	959	972	1,878	1,843
Other income (expense):
Interest expense	(476)	(461)	(953)	(927)
Allowance for borrowed funds	17	15	33	27
Allowance for equity funds	38	24	70	45
Other, net	30	1	65	31
Total other income (expense)	(349)	(776)	(781)	(1,362)
Income before income tax (benefit) expense and equity income	610	196	1,097	481
Income tax benefit	(76)	(168)	(224)	(389)
Net Income (Loss) Attributable to Parent	684	372	1,306	885
MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	659	717	1,501	1,463
Operating expenses:
Operations and maintenance	204	207	411	397
Depreciation and amortization	179	208	356	366
Property and other taxes	29	30	63	62
Total operating expenses	565	630	1,292	1,297
Operating income	94	87	209	166
Other income (expense):
Interest expense	(70)	(56)	(139)	(114)
Allowance for borrowed funds	7	4	13	8
Allowance for equity funds	17	13	32	23
Other, net	10	12	30	21
Total other income (expense)	(36)	(27)	(64)	(62)
Income before income tax (benefit) expense and equity income	58	60	145	104
Income tax benefit	(98)	(46)	(204)	(108)
Net Income (Loss) Attributable to Parent	156	106	349	212
Regulated electric | MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	538	589	1,080	1,058
Cost of sales	91	118	205	226
Regulated natural gas and other | MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	121	128	421	405
Cost of sales	$ 62	$ 67	$ 257	$ 246