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, 2021				$ 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				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				10,547	1,679	8,868
Balance at Dec. 31, 2022	46,832			10,679	1,679	9,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,558			803		803
Distributions to member				(992)		(992)
Other equity transactions	(9)		(1)
Balance at Sep. 30, 2023	48,643			10,490	1,679	8,811
Balance at Jun. 30, 2023				11,061	1,679	9,382
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	494			321		321
Distributions to member				(892)		(892)
Other equity transactions	(1)		$ (1)
Balance at Sep. 30, 2023	$ 48,643			$ 10,490	$ 1,679	$ 8,811