Consolidated Statements of Operations - SPPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Total operating revenue	$ 4,440	$ 4,166
Cost of sales	1,168	1,119
Total operating costs and expenses	3,569	3,199
Operating income	871	967
Interest expense	(466)	(458)
Allowance for equity funds	21	17
Other, net	30	26
Total other income (expense)	(586)	(376)
Income before income tax expense and equity income	285	591
Income tax (benefit) expense	(221)	52
Net income attributable to BHE shareholders	513	556
Sierra Pacific Power Company [Member]
Electric Domestic Regulated Revenue	181	159
Gas Domestic Regulated Revenue	41	34
Total operating revenue	222	193
Cost of sales	77	56
Cost of Purchased Oil and Gas	23	16
Utilities Operating Expense, Maintenance and Operations	39	41
Utilities Operating Expense, Depreciation and Amortization	30	28
Utilities Operating Expense, Taxes	6	6
Total operating costs and expenses	175	147
Operating income	47	46
Interest expense	(10)	(11)
Allowance for equity funds	1	1
Other, net	2	1
Total other income (expense)	(7)	(9)
Income before income tax expense and equity income	40	37
Income tax (benefit) expense	6	13
Net income attributable to BHE shareholders	$ 34	$ 24