Segment Information (Notes)

12 Months Ended

Dec. 31, 2016

Segment Reporting Information [Line Items]

Segment Information [Text Block]

Segment Information

The Company's reportable segments with foreign operations include Northern Powergrid, whose business is principally in the United Kingdom, BHE Transmission, whose business includes operations in Canada, and BHE Renewables, whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Effective January 1, 2016, MidAmerican Energy transferred the assets and liabilities of its unregulated retail services business to MidAmerican Energy Services, LLC, a subsidiary of BHE. Prior period amounts have been changed to reflect this activity in BHE and Other. Information related to the Company's reportable segments is shown below (in millions):

	Years Ended December 31,
	2016			2015			2014
Operating revenue:
PacifiCorp	$	5,201		$	5,232		$	5,252
MidAmerican Funding	2,631			2,515			2,844
NV Energy	2,895			3,351			3,241
Northern Powergrid	995			1,140			1,283
BHE Pipeline Group	978			1,016			1,078
BHE Transmission	502			592			62
BHE Renewables	743			728			623
HomeServices	2,801			2,526			2,144
BHE and Other(1)	676			780			799
Total operating revenue	$	17,422		$	17,880		$	17,326
Depreciation and amortization:
PacifiCorp	$	783		$	780		$	745
MidAmerican Funding	479			407			351
NV Energy	421			410			379
Northern Powergrid	200			202			198
BHE Pipeline Group	206			204			196
BHE Transmission	241			185			13
BHE Renewables	230			216			152
HomeServices	31			29			29
BHE and Other(1)	—			(5		)	(6		)
Total depreciation and amortization	$	2,591		$	2,428		$	2,057
Operating income:
PacifiCorp	$	1,427		$	1,344		$	1,308
MidAmerican Funding	566			451			395
NV Energy	770			812			791
Northern Powergrid	494			593			674
BHE Pipeline Group	455			464			439
BHE Transmission	92			260			16
BHE Renewables	256			255			314
HomeServices	212			184			125
BHE and Other(1)	(21		)	(35		)	(16		)
Total operating income	4,251			4,328			4,046
Interest expense	(1,854		)	(1,904		)	(1,711		)
Capitalized interest	139			74			89
Allowance for equity funds	158			91			98
Interest and dividend income	120			107			38
Other, net	36			39			42
Total income before income tax expense and equity income (loss)	$	2,850		$	2,735		$	2,602

	Years Ended December 31,
	2016			2015			2014
Interest expense:
PacifiCorp	$	381		$	383		$	386
MidAmerican Funding	218			206			197
NV Energy	250			262			283
Northern Powergrid	136			145			151
BHE Pipeline Group	50			66			76
BHE Transmission	153			146			14
BHE Renewables	198			193			175
HomeServices	2			3			4
BHE and Other(1)	466			500			425
Total interest expense	$	1,854		$	1,904		$	1,711
Income tax expense (benefit):
PacifiCorp	$	341		$	328		$	310
MidAmerican Funding	(139		)	(150		)	(122		)
NV Energy	200			207			195
Northern Powergrid	22			35			110
BHE Pipeline Group	163			158			149
BHE Transmission	26			63			28
BHE Renewables	(32		)	41			65
HomeServices	81			72			44
BHE and Other(1)	(259		)	(304		)	(190		)
Total income tax expense (benefit)	$	403		$	450		$	589
Capital expenditures:
PacifiCorp	$	903		$	916		$	1,066
MidAmerican Funding	1,637			1,448			1,527
NV Energy	529			571			558
Northern Powergrid	579			674			675
BHE Pipeline Group	226			240			257
BHE Transmission	466			966			222
BHE Renewables	719			1,034			2,221
HomeServices	20			16			17
BHE and Other	11			10			12
Total capital expenditures	$	5,090		$	5,875		$	6,555

	As of December 31,
	2016			2015			2014
Property, plant and equipment, net:
PacifiCorp	$	19,162		$	19,039		$	18,755
MidAmerican Funding	12,835			11,737			10,535
NV Energy	9,825			9,767			9,648
Northern Powergrid	5,148			5,790			5,599
BHE Pipeline Group	4,423			4,345			4,286
BHE Transmission	5,810			5,301			5,567
BHE Renewables	5,302			4,805			4,897
HomeServices	78			70			68
BHE and Other	(74		)	(85		)	(107		)
Total property, plant and equipment, net	$	62,509		$	60,769		$	59,248
Total assets:
PacifiCorp	$	23,563		$	23,550		$	23,404
MidAmerican Funding	17,571			16,315			15,164
NV Energy	14,320			14,656			14,256
Northern Powergrid	6,433			7,317			7,059
BHE Pipeline Group	5,144			4,953			4,951
BHE Transmission	8,378			7,553			7,979
BHE Renewables	7,010			5,892			6,082
HomeServices	1,776			1,705			1,622
BHE and Other	1,245			1,677			1,299
Total assets	$	85,440		$	83,618		$	81,816
	Years Ended December 31,
	2016			2015			2014
Operating revenue by country:
United States	$	15,895		$	16,121		$	15,857
United Kingdom	995			1,140			1,281
Canada	506			600			78
Philippines and other	26			19			110
Total operating revenue by country	$	17,422		$	17,880		$	17,326
Income before income tax expense and equity income by country:
United States	$	2,264		$	2,034		$	2,001
United Kingdom	382			472			557
Canada	135			165			4
Philippines and other	69			64			40
Total income before income tax expense and equity income by country:	$	2,850		$	2,735		$	2,602

	As of December 31,
	2016		2015		2014
Property, plant and equipment, net by country:
United States	$	51,671	$	49,680	$	47,918
United Kingdom	5,020		5,757		5,563
Canada	5,803		5,298		5,570
Philippines and other	15		34		197
Total property, plant and equipment, net by country	$	62,509	$	60,769	$	59,248

(1) The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate to other corporate entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.

The following table shows the change in the carrying amount of goodwill by reportable segment for the years ended December 31, 2016 and 2015 (in millions):

										BHE										BHE
			MidAmerican		NV		Northern			Pipeline			BHE			BHE		Home-		and
	PacifiCorp		Funding		Energy		Powergrid			Group			Transmission			Renewables		Services		Other			Total
December 31, 2014	$	1,129	$	2,102	$	2,369	$	1,100		$	127		$	1,657		$	95	$	761	$	3		$	9,343
Acquisitions	—		—		—		—			—			44			—		33		—			77
Foreign currency translation	—		—		—		(44		)	—			(273		)	—		—		(1		)	(318		)
Other	—		—		—		—			(26		)	—			—		—		—			(26		)
December 31, 2015	1,129		2,102		2,369		1,056			101			1,428			95		794		2			9,076
Acquisitions	—		—		—		—			—			4			—		46		—			50
Foreign currency translation	—		—		—		(126		)	—			42			—		—		(2		)	(86		)
Other	—		—		—		—			(26		)	(4		)	—		—		—			(30		)
December 31, 2016	$	1,129	$	2,102	$	2,369	$	930		$	75		$	1,470		$	95	$	840	$	—		$	9,010

MidAmerican Energy Company [Member]

Segment Reporting Information [Line Items]

Segment Information [Text Block]

Segment Information

MidAmerican Energy has identified two reportable operating segments: regulated electric and regulated gas. The previously reported nonregulated energy segment consisted substantially of MidAmerican Energy's unregulated retail services business, which was transferred to a subsidiary of BHE and is excluded from the information below related to the statements of operations for all periods presented. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting gas owned by others through its distribution system. Pricing for regulated electric and regulated gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. Refer to Note 10 for a discussion of items affecting income tax (benefit) expense for the regulated electric and gas operating segments.

The following tables provide information on a reportable segment basis (in millions):

	Years Ended December 31,
	2016			2015			2014
Operating revenue:
Regulated electric	$	1,985		$	1,837		$	1,817
Regulated gas	637			661			996
Other	3			4			9
Total operating revenue	$	2,625		$	2,502		$	2,822
Depreciation and amortization:
Regulated electric	$	436		$	366		$	312
Regulated gas	43			41			39
Total depreciation and amortization	$	479		$	407		$	351
Operating income:
Regulated electric	$	497		$	385		$	319
Regulated gas	68			64			75
Total operating income	$	565		$	449		$	394
Interest expense:
Regulated electric	$	178		$	166		$	157
Regulated gas	18			17			17
Total interest expense	$	196		$	183		$	174
Income tax (benefit) expense from continuing operations:
Regulated electric	$	(156	)	$	(163	)	$	(138	)
Regulated gas	22			16			22
Other	2			—			—
Total income tax (benefit) expense from continuing operations	$	(132	)	$	(147	)	$	(116	)
Net income:
Regulated electric	$	512		$	413		$	361
Regulated gas	32			33			40
Other	(2		)	—			—
Income from continuing operations	542			446			401
Income on discontinued operations	—			16			16
Net income	$	542		$	462		$	417

	Years Ended December 31,
	2016		2015		2014
Utility construction expenditures:
Regulated electric	$	1,564	$	1,365	$	1,429
Regulated gas	72		81		97
Total utility construction expenditures	$	1,636	$	1,446	$	1,526
	As of December 31,
	2016		2015		2014
Total assets:
Regulated electric	$	14,113	$	12,970	$	11,850
Regulated gas	1,345		1,251		1,217
Other	1		164		167
Total assets	$	15,459	$	14,385	$	13,234

MidAmerican Funding, LLC and Subsidiaries [Domain]

Segment Reporting Information [Line Items]

Segment Information [Text Block]

Segment Information

MidAmerican Funding has identified two reportable operating segments: regulated electric and regulated gas. The previously reported nonregulated energy segment consisted substantially of MidAmerican Energy's unregulated retail services business, which was transferred to a subsidiary of BHE and is excluded from the information below related to the statements of operations for all periods presented. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting gas owned by others through its distribution system. Pricing for regulated electric and regulated gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. "Other" in the tables below consists of the nonregulated subsidiaries of MidAmerican Funding not engaged in the energy business and parent company interest expense. Refer to Note 10 for a discussion of items affecting income tax (benefit) expense for the regulated electric and gas operating segments.

The following tables provide information on a reportable segment basis (in millions):

	Years Ended December 31,
	2016			2015			2014
Operating revenue:
Regulated electric	$	1,985		$	1,837		$	1,817
Regulated gas	637			661			996
Other	9			17			31
Total operating revenue	$	2,631		$	2,515		$	2,844
Depreciation and amortization:
Regulated electric	$	436		$	366		$	312
Regulated gas	43			41			39
Total depreciation and amortization	$	479		$	407		$	351
Operating income:
Regulated electric	$	497		$	385		$	319
Regulated gas	68			64			75
Other	1			2			1
Total operating income	$	566		$	451		$	395
Interest expense:
Regulated electric	$	178		$	166		$	157
Regulated gas	18			17			17
Other	23			23			23
Total interest expense	$	219		$	206		$	197
Income tax (benefit) expense from continuing operations:
Regulated electric	$	(156	)	$	(163	)	$	(138	)
Regulated gas	22			16			22
Other	(5		)	(3		)	(6		)
Total income tax (benefit) expense from continuing operations	$	(139	)	$	(150	)	$	(122	)
Net income:
Regulated electric	$	512		$	413		$	361
Regulated gas	32			33			40
Other	(12		)	(4		)	(8		)
Income from continuing operations	532			442			393
Income on discontinued operations	—			16			16
Net income	$	532		$	458		$	409
Utility construction expenditures:
Regulated electric	$	1,564		$	1,365		$	1,429
Regulated gas	72			81			97
Total utility construction expenditures	$	1,636		$	1,446		$	1,526

	As of December 31,
	2016		2015		2014
Total assets:
Regulated electric	$	15,304	$	14,161	$	13,041
Regulated gas	1,424		1,330		1,296
Other	19		183		185
Total assets	$	16,747	$	15,674	$	14,522

Goodwill by reportable segment as of December 31, 2016 and 2015, was as follows (in millions):

Regulated electric	$	1,191
Regulated gas	79
Total	$	1,270

Sierra Pacific Power Company [Member]

Segment Reporting Information [Line Items]

Segment Information [Text Block]

Segment Information

Sierra Pacific has identified two reportable operating segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by the PUCN; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance.

Sierra Pacific believes presenting gross margin allows the reader to assess the impact of Sierra Pacific's regulatory treatment and its overall regulatory environment on a consistent basis and is meaningful. Gross margin is calculated as operating revenue less cost of fuel, energy and capacity and natural gas purchased for resale ("cost of sales").

The following tables provide information on a reportable segment basis for the years ended December 31 (in millions):

	Years Ended December 31,
	2016		2015		2014
Operating revenue:
Regulated electric	$	702	$	810	$	779
Regulated gas	110		137		125
Total operating revenue	$	812	$	947	$	904
Cost of sales:
Regulated electric	$	265	$	374	$	361
Regulated gas	55		84		76
Total cost of sales	$	320	$	458	$	437
Gross margin:
Regulated electric	$	437	$	436	$	418
Regulated gas	55		53		49
Total gross margin	$	492	$	489	$	467
Operating and maintenance:
Regulated electric	$	153	$	149	$	143
Regulated gas	17		18		19
Total operating and maintenance	$	170	$	167	$	162
Depreciation and amortization:
Regulated electric	$	101	$	96	$	90
Regulated gas	17		17		15
Total depreciation and amortization	$	118	$	113	$	105
Operating income:
Regulated electric	$	161	$	168	$	165
Regulated gas	19		16		13
Total operating income	$	180	$	184	$	178
Interest expense:
Regulated electric	$	49	$	56	$	57
Regulated gas	5		5		4
Total interest expense	$	54	$	61	$	61
Income tax expense:
Regulated electric	$	44	$	43	$	43
Regulated gas	5		4		4
Total income tax expense	$	49	$	47	$	47

	Years Ended December 31,
	2016		2015		2014
Capital expenditures:
Regulated electric	$	176	$	229	$	168
Regulated gas	18		23		18
Total capital expenditures	$	194	$	252	$	186
	As of December 31,
Total assets:	2016		2015		2014
Regulated electric	$	3,119	$	3,060	$	2,984
Regulated gas	314		316		322
Regulated common assets(1)	60		111		30
Total assets	$	3,493	$	3,487	$	3,336

(1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.