Consolidated Statements of Changes in Member's Equity (Unaudited) - MidAmerican Funding LLC - USD ($) $ in Millions	Total	Additional Paid-in Capital	Retained Earnings	MidAmerican Funding, LLC	MidAmerican Funding, LLC Additional Paid-in Capital	MidAmerican Funding, LLC Retained Earnings
Balance at Dec. 31, 2020				$ 8,919	$ 1,679	$ 7,240
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 4,207			728		728
Other equity transactions	(3)
Balance at Sep. 30, 2021				9,647	1,679	7,968
Balance at Jun. 30, 2021				9,273	1,679	7,594
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,922			373		373
Other equity transactions	(2)			1		1
Balance at Sep. 30, 2021				9,647	1,679	7,968
Balance at Dec. 31, 2021	46,694			9,801	1,679	8,122
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,926			745		745
Other equity transactions	(6)	$ 1	$ (13)	1		1
Balance at Sep. 30, 2022	45,858			10,547	1,679	8,868
Balance at Jun. 30, 2022				10,246	1,679	8,567
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(842)			300		300
Other equity transactions	(1)		$ (1)	1		1
Balance at Sep. 30, 2022	$ 45,858			$ 10,547	$ 1,679	$ 8,868