Statements of Comprehensive Income - MEC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Net Income (Loss) Attributable to Parent	$ 1,036	$ 874	$ 2,062	$ 1,901
Other comprehensive income (loss), unrealized gains on available-for-sale securities	80	(103)	151	179
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges	(3)	(7)	(2)	(13)
Other comprehensive income (loss)	(39)	(412)	(110)	(303)
Comprehensive income attributable to BHE shareholders	997	462	1,952	1,598
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	320	234	527	459
Other comprehensive income (loss), unrealized gains on available-for-sale securities	0	(1)	2	0
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges	0	(3)	0	(7)
Other comprehensive income (loss)	0	(4)	2	(7)
Comprehensive income attributable to BHE shareholders	$ 320	$ 230	$ 529	$ 452