Statements of Comprehensive Income - MEC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Net Income (Loss) Attributable to Parent	$ 556	$ 490
Other comprehensive income (loss), unrealized gains on available-for-sale securities	38	33
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges	(4)	(23)
Other comprehensive income (loss)	126	99
Comprehensive income attributable to BHE shareholders	682	589
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	$ 105	76
Other comprehensive income (loss)		$ 1