Consolidated Statements of Operations - NPC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Cost of fuel and energy	$ 1,126	$ 1,049	$ 2,294	$ 2,168
Total operating costs and expenses	4,021	3,509	7,590	6,708
Operating income	972	1,045	1,843	2,012
Interest expense	(461)	(457)	(927)	(915)
Allowance for equity funds	24	18	45	35
Other, net	1	(1)	31	25
Total other income (expense)	(776)	(401)	(1,362)	(777)
Income before income tax expense and equity income	196	644	481	1,235
Income tax (benefit) expense	(168)	83	(389)	135
Net income attributable to BHE shareholders	372	574	885	1,130
Nevada Power Company [Member]
Electric Domestic Regulated Revenue	562	574	957	966
Cost of fuel and energy	239	238	409	403
Utilities Operating Expense, Maintenance and Operations	107	92	198	180
Utilities Operating Expense, Depreciation and Amortization	84	78	168	154
Utilities Operating Expense, Taxes	10	9	20	19
Total operating costs and expenses	440	417	795	756
Operating income	122	157	162	210
Interest expense	(45)	(44)	(90)	(88)
Allowance for Funds Used During Construction, Capitalized Interest	1	0	1	0
Allowance for equity funds	0	0	1	1
Other, net	5	7	9	12
Total other income (expense)	(39)	(37)	(79)	(75)
Income before income tax expense and equity income	83	120	83	135
Income tax (benefit) expense	19	43	19	48
Net income attributable to BHE shareholders	$ 64	$ 77	$ 64	$ 87