Consolidated Statements of Comprehensive Income - MEC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Net Income (Loss) Attributable to Parent	$ 536	$ 558	$ 1,026	$ 1,027
Unrealized gains on available-for-sale securities, net of tax of $14, $77, $36 and $190	38	116	71	282
Unrealized gains (losses) on cash flow hedges, net of tax of $16, $(4), $2 and $(3)	24	(7)	1	(6)
Other comprehensive income (loss)	(170)	344	(71)	109
Comprehensive income attributable to BHE shareholders	366	902	955	1,136
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	131	131	207	225
Unrealized gains on available-for-sale securities, net of tax of $14, $77, $36 and $190	1	1	2	1
Unrealized gains (losses) on cash flow hedges, net of tax of $16, $(4), $2 and $(3)	0	(6)	0	(4)
Other comprehensive income (loss)	1	(5)	2	(3)
Comprehensive income attributable to BHE shareholders	$ 132	$ 126	$ 209	$ 222