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	$ 622				190		190
Other comprehensive income (loss)	115	$ 0	$ 0	$ 115
Stockholders' Equity Attributable to Parent at Mar. 31, 2019					7,519	1,679	5,840
Stockholders' Equity, Other	(1)	0	(1)	0
Stockholders' Equity Attributable to Parent at Dec. 31, 2019	32,449				8,101	1,679	6,422
Net Income (Loss) Attributable to Parent	670				150		150
Other comprehensive income (loss)	(547)	0	0	(547)
Stockholders' Equity Attributable to Parent at Mar. 31, 2020	32,445				$ 8,251	$ 1,679	$ 6,572
Stockholders' Equity, Other	$ (1)	$ (1)	$ 0	$ 0