Consolidated Statements of Operations - NPC - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Cost of sales	$ 1,049	$ 970	$ 2,168	$ 2,065
Total operating costs and expenses	3,505	3,267	6,700	6,355
Operating income	1,049	854	2,020	1,807
Interest expense	457	468	915	941
Allowance for equity funds	18	115	35	130
Other, net	(3)	1	22	11
Total other income (expense)	(405)	(222)	(785)	(632)
Income before income tax expense and equity income	644	632	1,235	1,175
Income tax expense	83	121	135	195
Net income attributable to BHE shareholders	574	536	1,130	1,026
Nevada Power Company [Member]
Electric Domestic Regulated Revenue	574	525	966	924
Cost of sales	238	199	403	367
Utilities Operating Expense, Maintenance and Operations	92	100	181	199
Utilities Operating Expense, Depreciation and Amortization	78	76	154	151
Utilities Operating Expense, Taxes	9	9	19	20
Total operating costs and expenses	417	384	757	737
Operating income	157	141	209	187
Interest expense	44	47	88	95
Allowance for Funds Used During Construction, Capitalized Interest	0	1	0	2
Allowance for equity funds	0	2	1	3
Other, net	7	5	13	10
Total other income (expense)	(37)	(39)	(74)	(80)
Income before income tax expense and equity income	120	102	135	107
Income tax expense	43	36	48	38
Net income attributable to BHE shareholders	$ 77	$ 66	$ 87	$ 69