Consolidated Statements of Operations - MidAmerican Funding - 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):
Other Interest and Dividend Income	(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 Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	660	718	1,502	1,465
Operating expenses:
Operations and maintenance	205	208	412	398
Depreciation and amortization	179	208	356	366
Property and other taxes	29	30	63	62
Total operating expenses	566	631	1,292	1,299
Operating income	94	87	210	166
Other income (expense):
Other Interest and Dividend Income	(74)	(61)	(149)	(124)
Allowance for borrowed funds	7	4	13	8
Allowance for equity funds	17	13	32	23
Other, net	10	13	31	23
Total other income (expense)	(40)	(31)	(73)	(70)
Income before income tax (benefit) expense and equity income	54	56	137	96
Income tax benefit	(99)	(47)	(206)	(110)
Net Income (Loss) Attributable to Parent	153	103	343	206
Regulated electric | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	538	589	1,080	1,058
Cost of sales	91	118	205	226
Regulated natural gas and other | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	122	129	422	407
Cost of sales	$ 62	$ 67	$ 256	$ 247