Statements of Comprehensive Income - MEC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Net Income (Loss) Attributable to Parent	$ 574	$ 536	$ 1,130	$ 1,026
Other comprehensive income (loss), unrealized gains on available-for-sale securities	81	38	119	71
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges	(2)	24	(6)	1
Other comprehensive income (loss)	296	(170)	422	(71)
Comprehensive income attributable to BHE shareholders	870	366	1,552	955
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	$ 134	$ 131	$ 239	207
Other comprehensive income (loss)				$ 2