Consolidated Statements of Operations - MidAmerican Funding LLC - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Operating revenue:
Total operating revenue	$ 25,150	$ 20,952	$ 19,844
Operating expenses:
Cost of fuel and energy	5,504	4,187	4,586
Total operating expenses	19,823	16,661	15,694
Operating income	5,327	4,291	4,150
Other income (expense):
Interest expense	(2,118)	(2,021)	(1,912)
Allowance for equity funds	126	165	173
Other, net	(17)	88	97
Total other income (expense)	(33)	3,180	(1,736)
Income (loss) before income tax expense (benefit) and equity income (loss)	5,294	7,471	2,414
Income tax (benefit) expense	(1,132)	308	(598)
Net income (loss) attributable to parent	5,790	6,943	2,950
MidAmerican Funding, LLC
Operating revenue:
Total operating revenue	3,547	2,728	2,927
Operating expenses:
Operations and maintenance	775	755	801
Depreciation and amortization	914	716	639
Property and other taxes	142	135	127
Total operating expenses	3,131	2,274	2,378
Operating income	416	454	549
Other income (expense):
Interest expense	(319)	(322)	(302)
Allowance for borrowed funds	13	15	27
Allowance for equity funds	39	45	78
Other, net	54	52	52
Total other income (expense)	(213)	(210)	(145)
Income (loss) before income tax expense (benefit) and equity income (loss)	203	244	404
Income tax (benefit) expense	(680)	(574)	(377)
Net income (loss) attributable to parent	883	818	781
Regulated electric | MidAmerican Funding, LLC
Operating revenue:
Total operating revenue	2,529	2,139	2,237
Operating expenses:
Cost of fuel and energy	539	339	399
Regulated natural gas and other | MidAmerican Funding, LLC
Operating revenue:
Total operating revenue	1,018	589	690
Operating expenses:
Cost of fuel and energy	$ 761	$ 329	$ 412