Consolidated Statements of Operations - SPPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Total operating revenue	$ 4,041	$ 4,221
Cost of sales	1,095	1,354
Total operating costs and expenses	3,088	3,291
Operating income	953	930
Interest expense	473	472
Allowance for equity funds	15	31
Other, net	10	26
Total other income (expense)	(410)	(360)
Income before income tax expense and equity income	543	570
Income tax expense	74	123
Net income attributable to BHE shareholders	490	469
Sierra Pacific Power Company [Member]
Electric Domestic Regulated Revenue	170	196
Gas Domestic Regulated Revenue	47	50
Total operating revenue	217	246
Cost of sales	70	97
Cost of Purchased Oil and Gas	30	35
Utilities Operating Expense, Maintenance and Operations	41	36
Utilities Operating Expense, Depreciation and Amortization	29	28
Utilities Operating Expense, Taxes	6	7
Total operating costs and expenses	176	203
Operating income	41	43
Interest expense	16	15
Allowance for equity funds	1	1
Other, net	1	1
Total other income (expense)	(14)	(13)
Income before income tax expense and equity income	27	30
Income tax expense	10	11
Net income attributable to BHE shareholders	$ 17	$ 19