Consolidated Statements of Operations - NPC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Cost of sales	$ 1,212	$ 1,187	$ 3,380	$ 3,252
Total operating costs and expenses	3,659	3,507	10,359	9,862
Operating income	1,624	1,585	3,644	3,392
Interest expense	464	460	1,379	1,401
Allowance for equity funds	24	17	59	147
Other, net	2	15	24	26
Total other income (expense)	(392)	(375)	(1,177)	(1,007)
Income before income tax expense and equity income	1,232	1,210	2,467	2,385
Income tax expense	184	199	319	394
Net income attributable to BHE shareholders	1,068	1,036	2,198	2,062
Nevada Power Company [Member]
Electric Domestic Regulated Revenue	819	766	1,785	1,690
Cost of sales	318	251	721	618
Utilities Operating Expense, Maintenance and Operations	97	105	278	304
Utilities Operating Expense, Depreciation and Amortization	77	76	231	227
Utilities Operating Expense, Taxes	10	10	29	30
Total operating costs and expenses	502	442	1,259	1,179
Operating income	317	324	526	511
Interest expense	44	45	132	140
Allowance for Funds Used During Construction, Capitalized Interest	1	0	1	2
Allowance for equity funds	0	0	1	3
Other, net	5	7	18	17
Total other income (expense)	(38)	(38)	(112)	(118)
Income before income tax expense and equity income	279	286	414	393
Income tax expense	103	98	151	136
Net income attributable to BHE shareholders	$ 176	$ 188	$ 263	$ 257