Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 29, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
Document Transition Report	false
Entity File Number	001-14881
Entity Registrant Name	BERKSHIRE HATHAWAY ENERGY COMPANY
Entity Tax Identification Number	94-2213782
Entity Incorporation, State or Country Code	IA
Entity Address, Address Line One	666 Grand Avenue
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Des Moines
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	50309-2580
City Area Code	515
Local Phone Number	242-4300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		76,368,874
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001081316
Current Fiscal Year End Date	--12-31
PacifiCorp [Member]
Document Information [Line Items]
Entity File Number	001-05152
Entity Registrant Name	PACIFICORP
Entity Tax Identification Number	93-0246090
Entity Incorporation, State or Country Code	OR
Entity Address, Address Line One	825 N.E. Multnomah Street
Entity Address, City or Town	Portland
Entity Address, State or Province	OR
Entity Address, Postal Zip Code	97232
City Area Code	888
Local Phone Number	221-7070
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		357,060,915
Entity Central Index Key	0000075594
MidAmerican Funding, LLC and Subsidiaries [Member]
Document Information [Line Items]
Entity File Number	333-90553
Entity Registrant Name	MIDAMERICAN FUNDING, LLC
Entity Tax Identification Number	47-0819200
Entity Incorporation, State or Country Code	IA
Entity Address, Address Line One	666 Grand Avenue
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Des Moines
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	50309-2580
City Area Code	515
Local Phone Number	242-4300
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001098296
MidAmerican Energy Company [Member]
Document Information [Line Items]
Entity File Number	333-15387
Entity Registrant Name	MIDAMERICAN ENERGY COMPANY
Entity Tax Identification Number	42-1425214
Entity Incorporation, State or Country Code	IA
Entity Address, Address Line One	666 Grand Avenue
Entity Address, Address Line Two	Suite 500
Entity Address, City or Town	Des Moines
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	50309-2580
City Area Code	515
Local Phone Number	242-4300
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		70,980,203
Entity Central Index Key	0000928576
Nevada Power Company [Member]
Document Information [Line Items]
Entity File Number	000-52378
Entity Registrant Name	NEVADA POWER COMPANY
Entity Tax Identification Number	88-0420104
Entity Incorporation, State or Country Code	NV
Entity Address, Address Line One	6226 West Sahara Avenue
Entity Address, City or Town	Las Vegas
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89146
City Area Code	702
Local Phone Number	402-5000
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,000
Entity Central Index Key	0000071180
Sierra Pacific Power Company [Member]
Document Information [Line Items]
Entity File Number	000-00508
Entity Registrant Name	SIERRA PACIFIC POWER COMPANY
Entity Tax Identification Number	88-0044418
Entity Incorporation, State or Country Code	NV
Entity Address, Address Line One	6100 Neil Road
Entity Address, City or Town	Reno
Entity Address, State or Province	NV
Entity Address, Postal Zip Code	89511
City Area Code	775
Local Phone Number	834-4011
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		1,000
Entity Central Index Key	0000090144
Eastern Energy Gas Holdings, LLC [Member]
Document Information [Line Items]
Entity File Number	001-37591
Entity Registrant Name	EASTERN ENERGY GAS HOLDINGS, LLC
Entity Tax Identification Number	46-3639580
Entity Incorporation, State or Country Code	VA
Entity Address, Address Line One	6603 West Broad Street
Entity Address, City or Town	Richmond
Entity Address, State or Province	VA
Entity Address, Postal Zip Code	23230
City Area Code	804
Local Phone Number	613-5100
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001603291