Segment Information (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Segment Reporting Information [Line Items]
Sales revenue from energy operations	$ 15,182		$ 10,826		$ 10,236
Real estate	2,144		1,809		1,312
Total operating revenue	17,326		12,635		11,548
Depreciation and amortization - energy operations	2,028		1,527		1,436
Depreciation and amortization	2,057		1,560		1,455
Operating income (loss)	4,046		2,835		2,567
Interest expense	1,711		1,222		1,176
Capitalized interest	89		84		54
Allowance for equity funds	98		78		74
Other, net	80		66		56
Loss before income tax benefit and equity income	2,602		1,841		1,575
Income tax expense	589		130		148
Capital expenditures	6,555		4,307		3,380
Property, plant and equipment, net	59,248		50,119		37,614
Assets	82,304		70,000		52,467
PacifiCorp [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	5,252		5,147		4,882
Depreciation and amortization - energy operations	745		692		655
Operating income (loss)	1,308		1,275		1,034
Interest expense	386		390		393
Income tax expense	310		298		196
Capital expenditures	1,066		1,065		1,346
Property, plant and equipment, net	18,755		18,563		18,129
Assets	23,466		22,885		22,973
MidAmerican Funding [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	3,762		3,413		3,247
Depreciation and amortization - energy operations	351		403		393
Operating income (loss)	423		357		369
Interest expense	197		174		167
Income tax expense	(110)		(110)		(108)
Capital expenditures	1,527		1,027		645
Property, plant and equipment, net	10,535		9,353		8,647
Assets	15,368		13,992		13,355
NV Energy [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	3,241		(20)		0
Depreciation and amortization - energy operations	379		0		0
Operating income (loss)	791		(42)		0
Interest expense	283		0		0
Income tax expense	195		(15)		0
Capital expenditures	558		0		0
Property, plant and equipment, net	9,648		9,623		0
Assets	14,454		14,233		0
Northern Powergrid [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	1,283		1,025		1,035
Depreciation and amortization - energy operations	198		180		174
Operating income (loss)	674		501		565
Interest expense	151		141		139
Income tax expense	110		23		31
Capital expenditures	675		675		454
Property, plant and equipment, net	5,599		5,476		4,923
Assets	7,076		6,874		6,418
BHE Pipeline Group [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	1,078		952		968
Depreciation and amortization - energy operations	196		190		193
Operating income (loss)	439		446		465
Interest expense	76		80		92
Income tax expense	149		149		152
Capital expenditures	257		177		152
Property, plant and equipment, net	4,286		4,147		4,119
Assets	4,968		4,908		4,865
BHE Transmission [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	62		0		0
Depreciation and amortization - energy operations	13		0		0
Operating income (loss)	16		(5)		(2)
Interest expense	14		0		0
Income tax expense	28		10		8
Capital expenditures	222		0		0
Property, plant and equipment, net	5,567		0		0
Assets	7,992		465		368
BHE Renewables [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	623		355		166
Depreciation and amortization - energy operations	152		71		33
Operating income (loss)	314		223		93
Interest expense	175		138		70
Income tax expense	65		57		37
Capital expenditures	2,221		1,329		770
Property, plant and equipment, net	4,897		3,020		1,903
Assets	6,123		3,875		3,342
HomeServices [Member]
Segment Reporting Information [Line Items]
Real estate	2,144		1,809		1,312
Depreciation and amortization	29		33		19
Operating income (loss)	125		129		62
Interest expense	4		3		0
Income tax expense	44		48		32
Capital expenditures	17		21		8
Property, plant and equipment, net	68		61		47
Assets	1,629		1,381		899
BHE and Other [Member]
Segment Reporting Information [Line Items]
Sales revenue from energy operations	(119)	[1]	(46)	[1]	(62)	[1]
Depreciation and amortization - energy operations	(6)	[1]	(9)	[1]	(12)	[1]
Operating income (loss)	(44)	[1]	(49)	[1]	(19)	[1]
Interest expense	425	[1]	296	[1]	315	[1]
Income tax expense	(202)	[1]	(330)	[1]	(200)	[1]
Capital expenditures	12		13		5
Property, plant and equipment, net	(107)		(124)		(154)
Assets	1,228		1,387		247
UNITED STATES
Segment Reporting Information [Line Items]
Total operating revenue	15,857		11,465		10,388
Loss before income tax benefit and equity income	2,001		1,388		1,060
Property, plant and equipment, net	47,918		44,460		32,491
United Kingdom
Segment Reporting Information [Line Items]
Total operating revenue	1,281		1,023		1,033
Loss before income tax benefit and equity income	557		373		432
Property, plant and equipment, net	5,584		5,463		4,915
CANADA
Segment Reporting Information [Line Items]
Total operating revenue	78		16		0
Loss before income tax benefit and equity income	4		0		(4)
Property, plant and equipment, net	5,570		3		0
The Philippines and other [Member]
Segment Reporting Information [Line Items]
Total operating revenue	110		131		127
Loss before income tax benefit and equity income	40		80		87
Property, plant and equipment, net	$ 176		$ 193		$ 208

[1] (1)The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate to other corporate entities, corporate functions and intersegment eliminations.