Consolidated Statements of Changes in Member's Equity - MidAmerican Funding - USD ($) $ in Millions	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	MidAmerican Funding, LLC and Subsidiaries [Domain]	MidAmerican Funding, LLC and Subsidiaries [Domain] Additional Paid-in Capital [Member]	MidAmerican Funding, LLC and Subsidiaries [Domain] Retained Earnings [Member]
Stockholders' Equity Attributable to Parent at Dec. 31, 2018					$ 7,329	$ 1,679	$ 5,650
Net Income (Loss) Attributable to Parent	$ 1,306				343		343
Other comprehensive income (loss)	57	$ 0	$ 0	$ 57
Stockholders' Equity, Other	(3)	0	(2)	0
Stockholders' Equity Attributable to Parent at Jun. 30, 2019					7,672	1,679	5,993
Stockholders' Equity Attributable to Parent at Mar. 31, 2019					7,519	1,679	5,840
Net Income (Loss) Attributable to Parent	684				153		153
Other comprehensive income (loss)	(58)	0	0	(58)
Stockholders' Equity, Other	(2)	0	(1)	0
Stockholders' Equity Attributable to Parent at Jun. 30, 2019					7,672	1,679	5,993
Stockholders' Equity Attributable to Parent at Dec. 31, 2019	32,449				8,101	1,679	6,422
Net Income (Loss) Attributable to Parent	1,786				358		358
Other comprehensive income (loss)	(419)	0	0	(419)
Stockholders' Equity, Other	(1)	(1)	0	0
Stockholders' Equity Attributable to Parent at Jun. 30, 2020	33,684				8,459	1,679	6,780
Stockholders' Equity Attributable to Parent at Mar. 31, 2020					8,251	1,679	6,572
Net Income (Loss) Attributable to Parent	1,116				208		208
Other comprehensive income (loss)	128	$ 0	$ 0	$ 128
Stockholders' Equity Attributable to Parent at Jun. 30, 2020	$ 33,684				$ 8,459	$ 1,679	$ 6,780