Consolidated Statements of Changes in 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]	MidAmerican Funding, LLC and Subsidiaries [Domain] Accumulated Other Comprehensive (Loss) Income, Net [Member]
Stockholders' Equity Attributable to Parent at Dec. 31, 2014					$ 5,073	$ 1,679	$ 3,417	$ (23)
Net Income (Loss) Attributable to Parent	$ 1,027				228		228
Other comprehensive income (loss)	109	$ 0	$ 0	$ 109	(3)			(3)
Stockholders' Equity Attributable to Parent at Jun. 30, 2015					5,298	1,679	3,645	(26)
Stockholders' Equity Attributable to Parent at Dec. 31, 2015	22,401				5,525	1,679	3,876	(30)
Net Income (Loss) Attributable to Parent	1,026				200		200
Other comprehensive income (loss)	(71)	0	0	(71)	2			2
Stockholders' Equity Note, Spinoff Transaction					27			27
Stockholders' Equity Attributable to Parent at Jun. 30, 2016	23,357				$ 5,754	$ 1,679	$ 4,076	$ (1)
Stockholders' Equity, Other	$ 10	$ 1	$ 0	$ 0