Consolidated Statements of Operations - MidAmerican Funding - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating revenue:
Total operating revenue	$ 4,610	$ 4,440
Cost of sales	1,214	1,168
Operating expenses:
Total operating expenses	3,691	3,569
Operating income	919	871
Other income (expense):
Other Interest and Dividend Income	(477)	(466)
Allowance for borrowed funds	16	12
Allowance for equity funds	32	21
Other, net	35	30
Total other income (expense)	(432)	(586)
Income before income tax (benefit) expense and equity income	487	285
Income tax benefit	(148)	(221)
Net Income (Loss) Attributable to Parent	622	513
MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	842	747
Operating expenses:
Operations and maintenance	207	190
Depreciation and amortization	177	158
Property and other taxes	34	32
Total operating expenses	726	668
Operating income	116	79
Other income (expense):
Other Interest and Dividend Income	(75)	(63)
Allowance for borrowed funds	6	4
Allowance for equity funds	15	10
Other, net	21	10
Total other income (expense)	(33)	(39)
Income before income tax (benefit) expense and equity income	83	40
Income tax benefit	(107)	(63)
Net Income (Loss) Attributable to Parent	190	103
Regulated electric | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	542	469
Cost of sales	114	108
Regulated natural gas and other | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	300	278
Cost of sales	$ 194	$ 180