Consolidated Statements of Operations - MidAmerican Funding - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Operating revenue:
Total operating revenue	$ 4,527	$ 4,610
Cost of sales	1,038	1,214
Operating expenses:
Total operating expenses	3,608	3,691
Operating income	919	919
Other income (expense):
Interest expense	(483)	(477)
Allowance for borrowed funds	17	16
Allowance for equity funds	34	32
Other, net	(27)	35
Total other income (expense)	(412)	(432)
Income before income tax (benefit) expense and equity income	507	487
Income tax benefit	(184)	(148)
Net Income (Loss) Attributable to Parent	670	622
MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	686	842
Operating expenses:
Operations and maintenance	165	207
Depreciation and amortization	176	177
Property and other taxes	34	34
Total operating expenses	584	726
Operating income	102	116
Other income (expense):
Interest expense	(81)	(75)
Allowance for borrowed funds	3	6
Allowance for equity funds	8	15
Other, net	(6)	21
Total other income (expense)	(76)	(33)
Income before income tax (benefit) expense and equity income	26	83
Income tax benefit	(124)	(107)
Net Income (Loss) Attributable to Parent	150	190
Regulated electric | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	471	542
Cost of sales	80	114
Regulated natural gas and other | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	215	300
Cost of sales	$ 129	$ 194