Consolidated Statements of Changes in Member's Equity - MidAmerican Funding LLC - USD ($) $ in Millions	Total	Additional Paid-in Capital	MidAmerican Funding, LLC	MidAmerican Funding, LLC Additional Paid-in Capital	MidAmerican Funding, LLC Retained Earnings
Balance at Dec. 31, 2018			$ 7,329	$ 1,679	$ 5,650
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to parent	$ 2,950		781		781
Distribution to member			(8)		(8)
Other equity transactions	3		(1)		(1)
Balance at Dec. 31, 2019			8,101	1,679	6,422
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to parent	6,943		818		818
Other equity transactions	0	$ (1)
Balance at Dec. 31, 2020	43,010		8,919	1,679	7,240
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to parent	5,790		883		883
Other equity transactions	(1)		(1)		(1)
Balance at Dec. 31, 2021	$ 46,694		$ 9,801	$ 1,679	$ 8,122