Consolidated Statements of Comprehensive Income - MidAmerican Funding - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Income (Loss) Attributable to Parent	$ 513	$ 556
Other comprehensive income (loss), unrealized gains on available-for-sale securities	0	38
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges	(2)	(4)
Other comprehensive income (loss)	68	126
Comprehensive income attributable to BHE shareholders	581	682
MidAmerican Funding, LLC and Subsidiaries [Domain]
Net Income (Loss) Attributable to Parent	$ 103	$ 102