Berkshire Hathaway Energy 10-Q3 May 212021 Q1 Quarterly reportFinancial data

Company Profile

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
Document and Entity Information - shares	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

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Trade receivables, net	2,416	2,107
Inventories	1,110	1,168
Mortgage loans held-for-sale	2,065	2,001
Other current assets	3,236	2,741
Total current assets	10,220	9,447
Property, plant and equipment, net	86,757	86,128
Goodwill	11,534	11,506
Regulatory assets	3,221	3,157
Investments and restricted cash and cash equivalents and investments	13,010	14,320
Other assets	2,780	2,758
Total assets	127,522	127,316
Current liabilities:
Accounts payable	1,548	1,867
Accrued interest	642	555
Accrued property, income and other taxes	515	582
Accrued employee expenses	412	383
Short-term debt	2,699	2,286
Current portion of long-term debt	2,011	1,839
Other current liabilities	1,948	1,626
Total current liabilities	9,775	9,138
BHE senior debt	12,999	12,997
BHE junior subordinated debentures	100	100
Subsidiary debt	34,351	34,930
Regulatory liabilities	7,355	7,221
Deferred income taxes	11,630	11,775
Other long-term liabilities	4,261	4,178
Total liabilities	$ 80,471	80,339
Commitments and contingencies
BHE shareholders' equity:
Preferred Stock, Shares Authorized	100,000,000
Preferred Stock, Par or Stated Value Per Share	$ 0.01
Preferred Stock, Shares Issued	4,000,000
Preferred Stock, Shares Outstanding	4,000,000
Preferred Stock, Value, Issued	$ 3,750	3,750
Common Stock, Shares Authorized	115,000,000
Common Stock, No Par Value	$ 0
Common Stock, Shares, Issued	76,000,000
Common Stock, Shares, Outstanding	76,000,000
Common Stock, Value, Issued	$ 0	0
Additional paid-in capital	6,377	6,377
Long-term income tax receivable	(658)	(658)
Retained earnings	35,060	35,093
Accumulated other comprehensive loss, net	(1,440)	(1,552)
Total BHE shareholders' equity	43,089	43,010
Noncontrolling interests	3,962	3,967
Total equity	47,051	46,977
Total liabilities and equity	127,522	127,316
PacifiCorp [Member]
Current assets:
Cash and cash equivalents	43	13
Restricted cash and cash equivalents	3	4
Inventories	475	482
Other current assets	109	82
Total current assets	1,505	1,523
Regulatory assets	1,279	1,279
Other assets	479	470
Total assets	25,798	25,702
Current liabilities:
Accounts payable	615	772
Accrued interest	114	127
Accrued property, income and other taxes	118	80
Accrued employee expenses	112	84
Short-term debt	95	93
Current portion of long-term debt	879	420
Other current liabilities	178	174
Total current liabilities	2,222	1,865
Regulatory liabilities	2,728	2,727
Deferred income taxes	2,666	2,627
Other long-term liabilities	1,106	1,118
Total liabilities	16,456	16,529
Commitments and contingencies
BHE shareholders' equity:
Preferred Stock, Value, Issued	$ 2	2
Common Stock, Shares Authorized	750,000,000
Common Stock, No Par Value	$ 0
Common Stock, Shares, Issued	357,000,000
Common Stock, Shares, Outstanding	357,000,000
Common Stock, Value, Issued	$ 0	0
Additional paid-in capital	4,479	4,479
Retained earnings	4,880	4,711
Accumulated other comprehensive loss, net	(19)	(19)
Total BHE shareholders' equity	9,342	9,173
Total liabilities and equity	25,798	25,702
MidAmerican Energy Company [Member]
Current assets:
Cash and cash equivalents	37	38
Restricted cash and cash equivalents	7	7
Inventories	231	278
Other current assets	103	73
Total current assets	1,185	623
Regulatory assets	439	392
Investments and restricted cash and cash equivalents and investments	938	911
Other assets	215	232
Total assets	22,000	21,437
Current liabilities:
Accounts payable	292	408
Accrued interest	86	78
Accrued property, income and other taxes	124	161
Short-term debt	387	0
Other current liabilities	186	183
Total current liabilities	1,075	830
Regulatory liabilities	1,257	1,111
Deferred income taxes	3,107	3,054
Other long-term liabilities	414	458
Total liabilities	13,788	13,372
Commitments and contingencies
BHE shareholders' equity:
Common Stock, Shares Authorized	350,000,000
Common Stock, No Par Value	$ 0
Common Stock, Shares, Issued	71,000,000
Common Stock, Shares, Outstanding	71,000,000
Common Stock, Value, Issued	$ 0	0
Additional paid-in capital	561	561
Retained earnings	7,651	7,504
Total BHE shareholders' equity	8,212	8,065
Total liabilities and equity	22,000	21,437
Nevada Power Company [Member]
Current assets:
Cash and cash equivalents	92	25
Restricted cash and cash equivalents	12	11
Inventories	65	69
Other current assets	37	26
Total current assets	489	466
Regulatory assets	741	746
Other assets	71	72
Total assets	8,400	8,336
Current liabilities:
Accounts payable	189	181
Accrued interest	38	32
Accrued property, income and other taxes	38	25
Other current liabilities	38	22
Total current liabilities	456	409
Regulatory liabilities	1,171	1,163
Deferred income taxes	740	738
Other long-term liabilities	267	257
Total liabilities	5,459	5,397
Commitments and contingencies
BHE shareholders' equity:
Common Stock, Shares Authorized	1,000	1,000
Common Stock, Shares, Issued	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000
Common Stock, Value, Issued	$ 0	$ 0
Additional paid-in capital	2,308	2,308
Retained earnings	636	634
Accumulated other comprehensive loss, net	(3)	(3)
Total BHE shareholders' equity	2,941	2,939
Total liabilities and equity	8,400	8,336
Sierra Pacific Power Company [Member]
Current assets:
Cash and cash equivalents	8	19
Restricted cash and cash equivalents	7	7
Inventories	74	77
Other current assets	38	36
Total current assets	320	305
Regulatory assets	270	267
Other assets	185	183
Total assets	3,963	3,919
Current liabilities:
Accounts payable	103	108
Accrued interest	11	14
Accrued property, income and other taxes	16	14
Short-term debt	55	45
Other current liabilities	33	25
Total current liabilities	260	255
Regulatory liabilities	466	463
Deferred income taxes	382	374
Other long-term liabilities	133	131
Total liabilities	2,524	2,508
Commitments and contingencies
BHE shareholders' equity:
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares, Issued	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000
Common Stock, Value, Issued	$ 0	$ 0
Additional paid-in capital	1,111	1,111
Retained earnings	329	301
Accumulated other comprehensive loss, net	(1)	(1)
Total BHE shareholders' equity	1,439	1,411
Total liabilities and equity	3,963	3,919
Eastern Energy Gas Holdings, LLC [Member]
Current assets:
Cash and cash equivalents	106	35
Restricted cash and cash equivalents	9	13
Trade receivables, net	158	177
Inventories	120	119
Other current assets	145	122
Total current assets	845	656
Property, plant and equipment, net	10,099	10,144
Goodwill	1,286	1,286
Investments and restricted cash and cash equivalents and investments	262	244
Other assets	240	291
Total assets	12,732	12,621
Current liabilities:
Accounts payable	59	71
Accrued interest	54	19
Accrued property, income and other taxes	60	29
Current portion of long-term debt	500	500
Other current liabilities	127	147
Total current liabilities	857	814
Regulatory liabilities	668	669
Other long-term liabilities	215	218
Total liabilities	5,654	5,626
Commitments and contingencies
BHE shareholders' equity:
Accumulated other comprehensive loss, net	(45)	(53)
Total equity	7,078	6,995
Total liabilities and equity	$ 12,732	$ 12,621

Consolidated Balance Sheets - P

Consolidated Balance Sheets - PacifiCorp - USD ($) shares in Millions, $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,276	$ 1,290
Inventories	1,110	1,168
Other current assets	3,236	2,741
Total current assets	10,220	9,447
Regulatory assets	3,221	3,157
Other assets	2,780	2,758
Total assets	127,522	127,316
Current liabilities:
Accounts payable	1,548	1,867
Accrued interest	642	555
Accrued property, income and other taxes	515	582
Accrued employee expenses	412	383
Short-term debt	2,699	2,286
Current portion of long-term debt	2,011	1,839
Other current liabilities	1,948	1,626
Total current liabilities	9,775	9,138
Regulatory liabilities	7,355	7,221
Deferred income taxes	11,630	11,775
Other long-term liabilities	4,261	4,178
Total liabilities	80,471	80,339
Commitments and contingencies
Equity:
Preferred Stock, Value, Issued	3,750	3,750
Common stock	0	0
Additional paid-in capital	6,377	6,377
Retained earnings	35,060	35,093
Accumulated other comprehensive loss, net	(1,440)	(1,552)
Total BHE shareholders' equity	43,089	43,010
Total liabilities and equity	$ 127,522	127,316
Common Stock, Shares Authorized	115
Common Stock, No Par Value	$ 0
Common Stock, Shares, Issued	76
Common Stock, Shares, Outstanding	76
PacifiCorp [Member]
Current assets:
Cash and cash equivalents	$ 43	13
Trade receivables, net	650	703
Other receivables	48	48
Inventories	475	482
Regulatory assets	107	116
Prepayments	73	79
Other current assets	109	82
Total current assets	1,505	1,523
Property, plant and equipment, net	22,535	22,430
Regulatory assets	1,279	1,279
Other assets	479	470
Total assets	25,798	25,702
Current liabilities:
Accounts payable	615	772
Accrued interest	114	127
Accrued property, income and other taxes	118	80
Accrued employee expenses	112	84
Short-term debt	95	93
Current portion of long-term debt	879	420
Regulatory Liability, Current	111	115
Other current liabilities	178	174
Total current liabilities	2,222	1,865
Long-term debt	7,734	8,192
Regulatory liabilities	2,728	2,727
Deferred income taxes	2,666	2,627
Other long-term liabilities	1,106	1,118
Total liabilities	16,456	16,529
Commitments and contingencies
Equity:
Preferred Stock, Value, Issued	2	2
Common stock	0	0
Additional paid-in capital	4,479	4,479
Retained earnings	4,880	4,711
Accumulated other comprehensive loss, net	(19)	(19)
Total BHE shareholders' equity	9,342	9,173
Total liabilities and equity	$ 25,798	$ 25,702
Common Stock, Shares Authorized	750
Common Stock, No Par Value	$ 0
Common Stock, Shares, Issued	357
Common Stock, Shares, Outstanding	357

Balance Sheets - MEC

Balance Sheets - MEC - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,276	$ 1,290
Inventories	1,110	1,168
Other current assets	3,236	2,741
Total current assets	10,220	9,447
Regulatory assets	3,221	3,157
Investments and restricted cash and cash equivalents and investments	13,010	14,320
Other assets	2,780	2,758
Total assets	127,522	127,316
Current liabilities:
Accounts payable	1,548	1,867
Accrued interest	642	555
Accrued property, income and other taxes	515	582
Short-term debt	2,699	2,286
Current portion of long-term debt	2,011	1,839
Other current liabilities	1,948	1,626
Total current liabilities	9,775	9,138
Regulatory liabilities	7,355	7,221
Deferred income taxes	11,630	11,775
Other long-term liabilities	4,261	4,178
Total liabilities	80,471	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,377
Retained earnings	35,060	35,093
Accumulated other comprehensive loss, net	(1,440)	(1,552)
Total BHE shareholders' equity	43,089	43,010
Total liabilities and equity	127,522	127,316
MidAmerican Energy Company [Member]
Current assets:
Cash and cash equivalents	37	38
Trade receivables, net	521	234
Income Taxes Receivable, Current	293	0
Inventories	231	278
Other current assets	103	73
Total current assets	1,185	623
Property, plant and equipment, net	19,223	19,279
Regulatory assets	439	392
Investments and restricted cash and cash equivalents and investments	938	911
Other assets	215	232
Total assets	22,000	21,437
Current liabilities:
Accounts payable	292	408
Accrued interest	86	78
Accrued property, income and other taxes	124	161
Short-term debt	387	0
Other current liabilities	186	183
Total current liabilities	1,075	830
Long-term debt	7,224	7,210
Regulatory liabilities	1,257	1,111
Deferred income taxes	3,107	3,054
Asset retirement obligations	711	709
Other long-term liabilities	414	458
Total liabilities	13,788	13,372
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	561	561
Retained earnings	7,651	7,504
Total BHE shareholders' equity	8,212	8,065
Total liabilities and equity	$ 22,000	$ 21,437

Consolidated Balance Sheets Bal

Consolidated Balance Sheets Balance Sheets (Parenthetical) - MEC - USD ($) shares in Millions, $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Common Stock, No Par Value	$ 0
Common Stock, Shares Authorized	115
Common Stock, Shares, Issued	76
Common Stock, Shares, Outstanding	76
Accrued property, income and other taxes	$ 515	$ 582
Short-term debt	$ 2,699	2,286
MidAmerican Energy Company [Member]
Common Stock, No Par Value	$ 0
Common Stock, Shares Authorized	350
Common Stock, Shares, Issued	71
Common Stock, Shares, Outstanding	71
Accrued property, income and other taxes	$ 124	161
Short-term debt	$ 387	$ 0

Consolidated Balance Sheets - M

Consolidated Balance Sheets - MidAmerican Funding - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents		$ 1,276	$ 1,290
Inventories		1,110	1,168
Other current assets		3,236	2,741
Total current assets		10,220	9,447
Property, plant and equipment, net		86,757	86,128
Goodwill		11,534	11,506
Regulatory assets		3,221	3,157
Investments and restricted cash and cash equivalents and investments		13,010	14,320
Other assets		2,780	2,758
Total assets		127,522	127,316
Current liabilities:
Accounts payable		1,548	1,867
Accrued interest		642	555
Accrued property, income and other taxes		515	582
Short-term debt		2,699	2,286
Current portion of long-term debt		2,011	1,839
Other current liabilities		1,948	1,626
Total current liabilities		9,775	9,138
Regulatory liabilities		7,355	7,221
Deferred income taxes		11,630	11,775
Other long-term liabilities		4,261	4,178
Total liabilities		80,471	80,339
Commitments and contingencies
Equity:
Additional paid-in capital		6,377	6,377
Retained earnings		35,060	35,093
Accumulated other comprehensive loss, net		(1,440)	(1,552)
Total BHE shareholders' equity		43,089	43,010
Total liabilities and equity		127,522	127,316
MidAmerican Funding, LLC and Subsidiaries [Member]
Current assets:
Cash and cash equivalents		38	39
Trade receivables, net		521	234
Income Taxes Receivable, Current		295	0
Inventories		231	278
Other current assets		102	74
Total current assets		1,187	625
Property, plant and equipment, net		19,223	19,279
Goodwill		1,270	1,270
Regulatory assets		439	392
Investments and restricted cash and cash equivalents and investments		940	913
Other assets		215	232
Total assets	[1]	23,274	22,711
Current liabilities:
Accounts payable		292	408
Accrued interest		87	83
Accrued property, income and other taxes		124	161
Notes Payable, Related Parties, Current		184	177
Other current liabilities		187	183
Total current liabilities		1,261	1,012
Long-term debt		7,464	7,450
Regulatory liabilities		1,257	1,111
Deferred income taxes		3,104	3,052
Asset retirement obligations		711	709
Other long-term liabilities		414	458
Total liabilities		14,211	13,792
Commitments and contingencies
Equity:
Additional paid-in capital		1,679	1,679
Retained earnings		7,384	7,240
Total BHE shareholders' equity		9,063	8,919
Total liabilities and equity		$ 23,274	$ 22,711

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

Consolidated Balance Sheets - N

Consolidated Balance Sheets - NPC - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,276	$ 1,290
Inventories	1,110	1,168
Other current assets	3,236	2,741
Total current assets	10,220	9,447
Regulatory assets	3,221	3,157
Other assets	2,780	2,758
Total assets	127,522	127,316
Current liabilities:
Accounts payable	1,548	1,867
Accrued interest	642	555
Accrued property, income and other taxes	515	582
Other current liabilities	1,948	1,626
Total current liabilities	9,775	9,138
Regulatory liabilities	7,355	7,221
Deferred income taxes	11,630	11,775
Other long-term liabilities	4,261	4,178
Total liabilities	80,471	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,377
Retained earnings	35,060	35,093
Accumulated other comprehensive loss, net	(1,440)	(1,552)
Total BHE shareholders' equity	43,089	43,010
Total liabilities and equity	$ 127,522	127,316
Common Stock, Shares Authorized	115,000,000
Common Stock, Shares, Issued	76,000,000
Common Stock, Shares, Outstanding	76,000,000
Nevada Power Company [Member]
Current assets:
Cash and cash equivalents	$ 92	25
Trade receivables, net	180	234
Inventories	65	69
Derivative Asset, Current	48	26
Regulatory assets	22	48
Prepayments	45	38
Other current assets	37	26
Total current assets	489	466
Property, plant and equipment, net	6,751	6,701
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	348	351
Regulatory assets	741	746
Other assets	71	72
Total assets	8,400	8,336
Current liabilities:
Accounts payable	189	181
Accrued interest	38	32
Accrued property, income and other taxes	38	25
Finance Lease, Liability, Current	30	27
Regulatory liabilities	63	50
Customer deposits	42	47
Asset Retirement Obligation, Current	18	25
Other current liabilities	38	22
Total current liabilities	456	409
Long-term debt	2,497	2,496
Finance Lease, Liability, Noncurrent	328	334
Regulatory liabilities	1,171	1,163
Deferred income taxes	740	738
Other long-term liabilities	267	257
Total liabilities	5,459	5,397
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	2,308	2,308
Retained earnings	636	634
Accumulated other comprehensive loss, net	(3)	(3)
Total BHE shareholders' equity	2,941	2,939
Total liabilities and equity	$ 8,400	$ 8,336
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common Stock, Shares Authorized	1,000	1,000
Common Stock, Shares, Issued	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000

Consolidated Balance Sheets - S

Consolidated Balance Sheets - SPPC - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,276	$ 1,290
Inventories	1,110	1,168
Other current assets	3,236	2,741
Total current assets	10,220	9,447
Regulatory assets	3,221	3,157
Other assets	2,780	2,758
Total assets	127,522	127,316
Current liabilities:
Accounts payable	1,548	1,867
Accrued interest	642	555
Accrued property, income and other taxes	515	582
Short-term debt	2,699	2,286
Other current liabilities	1,948	1,626
Total current liabilities	9,775	9,138
Regulatory liabilities	7,355	7,221
Deferred income taxes	11,630	11,775
Other long-term liabilities	4,261	4,178
Total liabilities	80,471	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,377
Retained earnings	35,060	35,093
Accumulated other comprehensive loss, net	(1,440)	(1,552)
Total BHE shareholders' equity	43,089	43,010
Total liabilities and equity	$ 127,522	127,316
Common Stock, Shares Authorized	115,000,000
Common Stock, Shares, Issued	76,000,000
Common Stock, Shares, Outstanding	76,000,000
Sierra Pacific Power Company [Member]
Current assets:
Cash and cash equivalents	$ 8	19
Trade receivables, net	93	97
Inventories	74	77
Derivative Asset, Current	16	9
Regulatory assets	91	67
Other current assets	38	36
Total current assets	320	305
Property, plant and equipment, net	3,188	3,164
Regulatory assets	270	267
Other assets	185	183
Total assets	3,963	3,919
Current liabilities:
Accounts payable	103	108
Accrued interest	11	14
Accrued property, income and other taxes	16	14
Short-term debt	55	45
Regulatory liabilities	28	34
Customer deposits	14	15
Other current liabilities	33	25
Total current liabilities	260	255
Long-term debt, carrying value	1,164	1,164
Finance Lease, Liability, Noncurrent	119	121
Regulatory liabilities	466	463
Deferred income taxes	382	374
Other long-term liabilities	133	131
Total liabilities	2,524	2,508
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	1,111	1,111
Retained earnings	329	301
Accumulated other comprehensive loss, net	(1)	(1)
Total BHE shareholders' equity	1,439	1,411
Total liabilities and equity	$ 3,963	$ 3,919
Common Stock, Par or Stated Value Per Share	$ 3.75	$ 3.75
Common Stock, Shares Authorized	20,000,000	20,000,000
Common Stock, Shares, Issued	1,000	1,000
Common Stock, Shares, Outstanding	1,000	1,000

Consolidated Balance Sheets (Un

Consolidated Balance Sheets (Unaudited) - EEGH - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Trade receivables, net	2,416	2,107
Inventories	1,110	1,168
Other current assets	3,236	2,741
Total current assets	10,220	9,447
Property, plant and equipment, net	86,757	86,128
Goodwill	11,534	11,506
Investments	13,010	14,320
Other assets	2,780	2,758
Total assets	127,522	127,316
Current liabilities:
Accounts payable	1,548	1,867
Accrued interest	642	555
Accrued property, income and other taxes	515	582
Current portion of long-term debt	2,011	1,839
Other current liabilities	1,948	1,626
Total current liabilities	9,775	9,138
Regulatory liabilities	7,355	7,221
Other long-term liabilities	4,261	4,178
Total liabilities	80,471	80,339
Commitments and contingencies
Member's equity:
Accumulated other comprehensive loss, net	(1,440)	(1,552)
Total liabilities and equity	127,522	127,316
Eastern Energy Gas Holdings, LLC [Member]
Current assets:
Cash and cash equivalents	106	35
Restricted cash and cash equivalents	9	13
Trade receivables, net	158	177
Receivables from affiliates	263	139
Other receivables	44	51
Inventories	120	119
Other current assets	145	122
Total current assets	845	656
Property, plant and equipment, net	10,099	10,144
Goodwill	1,286	1,286
Investments	262	244
Other assets	240	291
Total assets	12,732	12,621
Current liabilities:
Accounts payable	59	71
Accounts payable to affiliates	57	39
Accrued interest	54	19
Accrued property, income and other taxes	60	29
Notes payable	0	9
Current portion of long-term debt	500	500
Other current liabilities	127	147
Total current liabilities	857	814
Long-term debt	3,914	3,925
Regulatory liabilities	668	669
Other long-term liabilities	215	218
Total liabilities	5,654	5,626
Commitments and contingencies
Member's equity:
Membership interests	3,035	2,957
Accumulated other comprehensive loss, net	(45)	(53)
Total member's equity	2,990	2,904
Noncontrolling interests	4,088	4,091
Total equity	7,078	6,995
Total liabilities and equity	$ 12,732	$ 12,621

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating revenue:
Total operating revenue	$ 6,081	$ 4,527
Energy:
Cost of sales	1,569	1,038
Operations and maintenance	934	737
Depreciation and amortization	915	809
Property and other taxes	210	151
Real estate	1,120	873
Total operating expenses	4,748	3,608
Operating income	1,333	919
Other income (expense):
Interest expense	(530)	(483)
Capitalized interest	14	17
Allowance for equity funds	26	34
Interest and dividend income	21	20
(Losses) gains on marketable securities, net	(1,118)	27
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax expense (benefit) and equity income (loss)	(246)	507
Income tax benefit	(535)	(184)
Equity loss	(179)	(18)
Net income	110	673
Net income attributable to noncontrolling interests	106	3
Net income (loss) attributable to parent	4	670
Dividends, Preferred Stock	38	0
Undistributed Earnings (Loss) Available to Common Shareholders, Diluted	(34)	670
Electricity and natural gas [Member]
Operating revenue:
Total operating revenue	4,849	3,634
Residential real estate brokerage and mortgage businesses [Member]
Operating revenue:
Total operating revenue	$ 1,232	$ 893

Consolidated Statements of Op_2

Consolidated Statements of Operations - PacifiCorp - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating revenue	$ 6,081	$ 4,527
Cost of sales	1,569	1,038
Operating expenses:
Operating income	1,333	919
Other income (expense):
Interest expense	(530)	(483)
Allowance for borrowed funds	14	17
Allowance for equity funds	26	34
Interest and dividend income	21	20
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax expense and equity income	(246)	507
Income tax benefit	(535)	(184)
Net Income (Loss) Attributable to Parent	4	670
PacifiCorp [Member]
Operating revenue	1,242	1,206
Cost of sales	424	417
Operating expenses:
Operations and maintenance	259	254
Depreciation and amortization	264	252
Property and other taxes	61	49
Utilities Operating Expense	1,008	972
Operating income	234	234
Other income (expense):
Interest expense	(107)	(102)
Allowance for borrowed funds	6	10
Allowance for equity funds	13	21
Interest and dividend income	6	3
Other, net	6	(4)
Total other income (expense)	(76)	(72)
Income before income tax expense and equity income	158	162
Income tax benefit	(11)	(14)
Net Income (Loss) Attributable to Parent	$ 169	$ 176

Statements of Operations - MEC

Statements of Operations - MEC - USD ($) $ in Millions	3 Months Ended
Statements of Operations - MEC - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Operating revenue:
Total operating revenue	$ 6,081	$ 4,527
Cost of sales	1,569	1,038
Operating expenses:
Total operating expenses	4,748	3,608
Operating income	1,333	919
Other income (expense):
Interest expense	(530)	(483)
Allowance for borrowed funds	14	17
Allowance for equity funds	26	34
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax (benefit) expense and equity income	(246)	507
Income tax benefit	(535)	(184)
Net income (loss) attributable to parent	4	670
MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	1,067	681
Operating expenses:
Operations and maintenance	193	165
Depreciation and amortization	207	176
Property and other taxes	36	34
Total operating expenses	1,019	583
Operating income	48	98
Other income (expense):
Interest expense	(74)	(76)
Allowance for borrowed funds	2	3
Allowance for equity funds	6	8
Other, net	11	(5)
Total other income (expense)	(55)	(70)
Income before income tax (benefit) expense and equity income	(7)	28
Income tax benefit	(154)	(123)
Net income (loss) attributable to parent	147	151
Regulated electric \| MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	545	471
Cost of sales	151	80
Regulated natural gas and other \| MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	522	210
Cost of sales	$ 432	$ 128

Consolidated Statements of Op_3

Consolidated Statements of Operations - MidAmerican Funding - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating revenue:
Total operating revenue	$ 6,081	$ 4,527
Cost of sales	1,569	1,038
Operating expenses:
Total operating expenses	4,748	3,608
Operating income	1,333	919
Other income (expense):
Interest expense	(530)	(483)
Allowance for borrowed funds	14	17
Allowance for equity funds	26	34
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax (benefit) expense and equity income	(246)	507
Income tax benefit	(535)	(184)
Net Income (Loss) Attributable to Parent	4	670
MidAmerican Funding, LLC and Subsidiaries [Member]
Operating revenue:
Total operating revenue	1,067	686
Operating expenses:
Operations and maintenance	193	165
Depreciation and amortization	207	176
Property and other taxes	36	34
Total operating expenses	1,019	584
Operating income	48	102
Other income (expense):
Interest expense	(78)	(81)
Allowance for borrowed funds	2	3
Allowance for equity funds	6	8
Other, net	10	(6)
Total other income (expense)	(60)	(76)
Income before income tax (benefit) expense and equity income	(12)	26
Income tax benefit	(156)	(124)
Net Income (Loss) Attributable to Parent	144	150
Regulated electric \| MidAmerican Funding, LLC and Subsidiaries [Member]
Operating revenue:
Total operating revenue	545	471
Cost of sales	151	80
Regulated natural gas and other \| MidAmerican Funding, LLC and Subsidiaries [Member]
Operating revenue:
Total operating revenue	522	215
Cost of sales	$ 432	$ 129

Consolidated Statements of Op_4

Consolidated Statements of Operations - NPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating revenue	$ 6,081	$ 4,527
Cost of sales	1,569	1,038
Total operating expenses	4,748	3,608
Operating income	1,333	919
Interest expense	(530)	(483)
Allowance for borrowed funds	14	17
Allowance for equity funds	26	34
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax expense and equity income	(246)	507
Income tax benefit	(535)	(184)
Net income attributable to BHE shareholders	4	670
Nevada Power Company [Member]
Operating revenue	370	389
Cost of sales	165	170
Operations and maintenance	63	82
Depreciation and amortization	101	90
Property and other taxes	12	12
Total operating expenses	341	354
Operating income	29	35
Interest expense	(38)	(42)
Allowance for borrowed funds	1	1
Allowance for equity funds	1	2
Other, net	9	(1)
Total other income (expense)	(27)	(40)
Income before income tax expense and equity income	2	(5)
Income tax benefit	0	(1)
Net income attributable to BHE shareholders	$ 2	$ (4)

Consolidated Statements of Op_5

Consolidated Statements of Operations - SPPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Total operating revenue	$ 6,081	$ 4,527
Cost of sales	1,569	1,038
Total operating expenses	4,748	3,608
Operating income	1,333	919
Interest expense	(530)	(483)
Allowance for equity funds	26	34
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax expense and equity income	(246)	507
Income tax benefit	(535)	(184)
Net income attributable to BHE shareholders	4	670
Sierra Pacific Power Company [Member]
Total operating revenue	220	232
Operations and maintenance	36	42
Depreciation and amortization	36	34
Property and other taxes	6	6
Total operating expenses	181	192
Operating income	39	40
Interest expense	(14)	(14)
Allowance for equity funds	1	1
Other, net	6	1
Total other income (expense)	(7)	(12)
Income before income tax expense and equity income	32	28
Income tax benefit	4	3
Net income attributable to BHE shareholders	28	25
Sierra Pacific Power Company [Member] \| Regulated electric
Total operating revenue	181	184
Cost of sales	82	80
Sierra Pacific Power Company [Member] \| Regulated natural gas
Total operating revenue	39	48
Cost of sales	$ 21	$ 30

Consolidated Statements of Op_6

Consolidated Statements of Operations (Unaudited) - EEGH - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating revenue	$ 6,081	$ 4,527
Operating expenses:
Total operating expenses	4,748	3,608
Operating income	1,333	919
Other income (expense):
Interest expense	(530)	(483)
Allowance for equity funds	26	34
Interest and dividend income	21	20
Other, net	8	(27)
Total other income (expense)	(1,579)	(412)
Income before income tax expense (benefit) and equity income (loss)	(246)	507
Income tax benefit	(535)	(184)
Equity income	(179)	(18)
Net income	110	673
Net income attributable to noncontrolling interests	106	3
Net income (loss) attributable to parent	4	670
Eastern Energy Gas Holdings, LLC [Member]
Operating revenue	486	556
Operating expenses:
Cost of gas	0	8
Operations and maintenance	124	168
Depreciation and amortization	80	93
Property and other taxes	39	39
Total operating expenses	243	308
Operating income	243	248
Other income (expense):
Interest expense	(44)	(58)
Allowance for equity funds	2	5
Interest and dividend income	0	30
Other, net	1	14
Total other income (expense)	(41)	(9)
Income before income tax expense (benefit) and equity income (loss)	202	239
Income tax benefit	27	52
Equity income	16	15
Net income	191	202
Net income attributable to noncontrolling interests	102	33
Net income (loss) attributable to parent	$ 89	$ 169

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 110	$ 673
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax	7	34
Foreign currency translation adjustment	91	(548)
Unrealized gains (losses) on cash flow hedges, net of tax	14	(33)
Total other comprehensive (loss) income, net of tax	112	(547)
Comprehensive income	222	126
Comprehensive income attributable to noncontrolling interests	106	3
Comprehensive income attributable to BHE shareholders	$ 116	$ 123

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Unrecognized amounts on retirement benefits, tax	$ 4	$ 11
Unrealized gains (losses) on cash flow hedges, tax	$ 5	$ (10)

Consolidated Statements of Co_3

Consolidated Statements of Comprehensive Income (Unaudited) - EEGH - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net income	$ 110	$ 673
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax	7	34
Unrealized gains (losses) on cash flow hedges, net of tax	14	(33)
Total other comprehensive (loss) income, net of tax	112	(547)
Comprehensive income	222	126
Comprehensive income attributable to noncontrolling interests	106	3
Comprehensive income attributable to BHE shareholders	116	123
Eastern Energy Gas Holdings, LLC [Member]
Net income	191	202
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax	2	1
Unrealized gains (losses) on cash flow hedges, net of tax	10	(85)
Total other comprehensive (loss) income, net of tax	12	(84)
Comprehensive income	203	118
Comprehensive income attributable to noncontrolling interests	106	33
Comprehensive income attributable to BHE shareholders	$ 97	$ 85

Consolidated Statements of Co_4

Consolidated Statements of Comprehensive Income (Unaudited) - EEGH (Parenthetical) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Unrecognized amounts on retirement benefits, tax	$ 4	$ 11
Unrealized gains (losses) on cash flow hedges, tax	5	(10)
Eastern Energy Gas Holdings, LLC [Member]
Unrecognized amounts on retirement benefits, tax	0	1
Unrealized gains (losses) on cash flow hedges, tax	$ 3	$ (30)

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Preferred Stock [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Long-term income tax receivable [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Noncontrolling Interest [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Value, Outstanding		$ 0
Common Stock, Value, Outstanding			$ 0
Long-term income tax receivable					$ (530)
Balance at Dec. 31, 2019	$ 32,578			$ 6,389		$ 28,296	$ (1,706)	$ 129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	673		0	0		670	0	3
Other comprehensive income (loss)	(547)		0	0		0	(547)	0
Common stock purchases	(126)		0	(6)		(120)	0	0
Dividends, Preferred Stock	0
Distributions to noncontrolling interests	(5)		0	0		0	0	(5)
Other equity transactions	(1)		0	(1)		0	0	0
Balance at Mar. 31, 2020	32,572			6,382		28,846	(2,253)	127
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Value, Outstanding		0
Common Stock, Value, Outstanding			0
Long-term income tax receivable					(530)
Preferred Stock, Value, Outstanding		3,750
Common Stock, Value, Outstanding			0
Long-term income tax receivable	(658)				(658)
Balance at Dec. 31, 2020	46,977			6,377		35,093	(1,552)	3,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	110		0	0		4	0	106
Other comprehensive income (loss)	112		0	0		0	112	0
Dividends, Preferred Stock	(38)					(38)
Distributions to noncontrolling interests	(113)		0	0	0	0	0	(113)
Other equity transactions	3		0	0	0	1	0	2
Balance at Mar. 31, 2021	47,051			$ 6,377		$ 35,060	$ (1,440)	$ 3,962
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Preferred Stock, Value, Outstanding		$ 3,750
Common Stock, Value, Outstanding			$ 0
Long-term income tax receivable	$ (658)				$ (658)

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity - PacifiCorp - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	PacifiCorp [Member]	PacifiCorp [Member]Preferred Stock [Member]	PacifiCorp [Member]Common Stock [Member]	PacifiCorp [Member]Additional Paid-in Capital [Member]	PacifiCorp [Member]Retained Earnings [Member]	PacifiCorp [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member]
Balance at Dec. 31, 2019					$ (1,706)	$ 8,437	$ 2	$ 0	$ 4,479	$ 3,972	$ (16)
Net Income (Loss) Attributable to Parent	$ 670					176				176
Total other comprehensive (loss) income, net of tax	(547)	$ 0	$ 0	$ 0	(547)	1				0	1
Balance at Mar. 31, 2020					(2,253)	8,614	2	0	4,479	4,148	(15)
Balance at Dec. 31, 2020	43,010				(1,552)	9,173	2	0	4,479	4,711	(19)
Net Income (Loss) Attributable to Parent	4					169				169
Total other comprehensive (loss) income, net of tax	112	$ 0	$ 0	$ 0	112
Balance at Mar. 31, 2021	$ 43,089				$ (1,440)	$ 9,342	$ 2	$ 0	$ 4,479	$ 4,880	$ (19)

Statements of Changes in Shareh

Statements of Changes in Shareholder's Equity - MEC - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	MidAmerican Energy Company [Member]	MidAmerican Energy Company [Member]Common Stock [Member]	MidAmerican Energy Company [Member]Additional Paid-in Capital [Member]	MidAmerican Energy Company [Member]Retained Earnings [Member]
Balance at Dec. 31, 2019					$ (1,706)	$ 7,240	$ 0	$ 561	$ 6,679
Net Income (Loss) Attributable to Parent	$ 670					151			151
Other comprehensive income (loss)	(547)	$ 0	$ 0	$ 0	(547)
Stockholders' Equity, Other	(1)	0	(1)	0	0
Balance at Mar. 31, 2020					(2,253)	7,391	0	561	6,830
Balance at Dec. 31, 2020	43,010				(1,552)	8,065	0	561	7,504
Net Income (Loss) Attributable to Parent	4					147			147
Other comprehensive income (loss)	112	0	0	0	112
Stockholders' Equity, Other	3	$ 0	$ 0	$ 1	0
Balance at Mar. 31, 2021	$ 43,089				$ (1,440)	$ 8,212	$ 0	$ 561	$ 7,651

Consolidated Statements of Ch_3

Consolidated Statements of Changes in Member's Equity - MidAmerican Funding - USD ($) $ in Millions	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	MidAmerican Funding, LLC and Subsidiaries [Member]	MidAmerican Funding, LLC and Subsidiaries [Member]Additional Paid-in Capital [Member]	MidAmerican Funding, LLC and Subsidiaries [Member]Retained Earnings [Member]
Balance at Dec. 31, 2019				$ (1,706)	$ 8,101	$ 1,679	$ 6,422
Net Income (Loss) Attributable to Parent	$ 670				150		150
Other comprehensive income (loss)	(547)	$ 0	$ 0	(547)
Stockholders' Equity, Other	(1)	(1)	0	0
Balance at Mar. 31, 2020				(2,253)	8,251	1,679	6,572
Balance at Dec. 31, 2020	43,010			(1,552)	8,919	1,679	7,240
Net Income (Loss) Attributable to Parent	4				144		144
Other comprehensive income (loss)	112	0	0	112
Stockholders' Equity, Other	3	$ 0	$ 1	0
Balance at Mar. 31, 2021	$ 43,089			$ (1,440)	$ 9,063	$ 1,679	$ 7,384

Consolidated Statements of Ch_4

Consolidated Statements of Changes in Equity - NPC - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Nevada Power Company [Member]	Nevada Power Company [Member]Common Stock [Member]	Nevada Power Company [Member]Additional Paid-in Capital [Member]	Nevada Power Company [Member]Retained Earnings [Member]	Nevada Power Company [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member]
Balance (shares) at Dec. 31, 2019							1,000
Balance at Dec. 31, 2019					$ (1,706)	$ 2,797	$ 0	$ 2,308	$ 493	$ (4)
Net Income (Loss) Attributable to Parent	$ 670					(4)			(4)
Stockholders' Equity, Other	(1)	$ 0	$ (1)	$ 0	0	(1)			(1)
Balance (shares) at Mar. 31, 2020							1,000
Balance at Mar. 31, 2020					(2,253)	$ 2,794	$ 0	2,308	490	(4)
Balance (shares) at Dec. 31, 2020						1,000	1,000
Balance at Dec. 31, 2020	43,010				(1,552)	$ 2,939	$ 0	2,308	634	(3)
Net Income (Loss) Attributable to Parent	4					$ 2			2
Stockholders' Equity, Other	$ 3	$ 0	$ 0	$ 1	0
Balance (shares) at Mar. 31, 2021	76,000,000					1,000	1,000
Balance at Mar. 31, 2021	$ 43,089				$ (1,440)	$ 2,941	$ 0	$ 2,308	$ 636	$ (3)

Consolidated Statements of Ch_5

Consolidated Statements of Changes in Equity - SPPC - USD ($) $ in Millions	Total	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Sierra Pacific Power Company [Member]	Sierra Pacific Power Company [Member]Common Stock [Member]	Sierra Pacific Power Company [Member]Additional Paid-in Capital [Member]	Sierra Pacific Power Company [Member]Retained Earnings [Member]	Sierra Pacific Power Company [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member]
Balance (shares) at Dec. 31, 2019				1,000
Balance at Dec. 31, 2019		$ (1,706)	$ 1,320	$ 0	$ 1,111	$ 210	$ (1)
Net Income (Loss) Attributable to Parent	$ 670		25			25
Balance (shares) at Mar. 31, 2020				1,000
Balance at Mar. 31, 2020		(2,253)	$ 1,345	$ 0	1,111	235	(1)
Balance (shares) at Dec. 31, 2020			1,000	1,000
Balance at Dec. 31, 2020	43,010	(1,552)	$ 1,411	$ 0	1,111	301	(1)
Net Income (Loss) Attributable to Parent	$ 4		$ 28			28
Balance (shares) at Mar. 31, 2021	76,000,000		1,000	1,000
Balance at Mar. 31, 2021	$ 43,089	$ (1,440)	$ 1,439	$ 0	$ 1,111	$ 329	$ (1)

Consolidated Statements of Ch_6

Consolidated Statements of Changes in Equity (Unaudited) - EEGH - USD ($) $ in Millions	Total	Eastern Energy Gas Holdings, LLC [Member]	Member Interests[Member]Eastern Energy Gas Holdings, LLC [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]Eastern Energy Gas Holdings, LLC [Member]	Noncontrolling Interest [Member]	Noncontrolling Interest [Member]Eastern Energy Gas Holdings, LLC [Member]
Balance at Dec. 31, 2019	$ 32,578	$ 10,229	$ 9,031	$ (1,706)	$ (187)	$ 129	$ 1,385
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	673	202	169				33
Other comprehensive income (loss)	(547)	(84)		(547)	(84)	0
Distributions		(269)	(232)				(37)
Balance at Mar. 31, 2020	32,572	10,078	8,968	(2,253)	(271)	127	1,381
Balance at Dec. 31, 2020	46,977	6,995	2,957	(1,552)	(53)	3,967	4,091
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	110	191	89				102
Other comprehensive income (loss)	112	12		112	8	0	4
Contributions		11	11
Distributions		(131)	(22)				(109)
Balance at Mar. 31, 2021	$ 47,051	$ 7,078	$ 3,035	$ (1,440)	$ (45)	$ 3,962	$ 4,088

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 110	$ 673
Adjustments to reconcile net income to net cash flows from operating activities:
Gains (losses) on marketable securities, net	1,118	(27)
Depreciation and amortization	927	821
Allowance for equity funds	(26)	(34)
Equity income, net of distributions	221	29
Changes in regulatory assets and liabilities	(9)	0
Deferred income taxes and amortization of investment tax credits	(135)	47
Other, net	9	63
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(249)	(118)
Derivative collateral, net	14	(19)
Pension and other postretirement benefit plans	(21)	(23)
Accrued property, income and other taxes, net	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Cash flows from investing activities:
Capital expenditures	(1,295)	(1,356)
Purchases of marketable securities	(128)	(188)
Proceeds from sales of marketable securities	104	180
Equity method investments	(26)	(153)
Other, net	(29)	43
Net cash flows from investing activities	(1,374)	(1,474)
Cash flows from financing activities:
Proceeds from BHE senior debt	0	3,231
Repayments of Unsecured Debt	(450)	(350)
Common stock purchases	0	(126)
Proceeds from subsidiary debt	0	1,093
Repayments of subsidiary debt	(26)	(1,347)
Net proceeds from (repayments of) short-term debt	409	(1,109)
Distributions to noncontrolling interests	(115)	(2)
Other, net	(9)	(32)
Net cash flows from financing activities	(191)	1,358
Effect of exchange rate changes	1	(13)
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
PacifiCorp [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(13)	(21)
Changes in regulatory assets and liabilities	(4)	(16)
Deferred income taxes and amortization of investment tax credits	13	(30)
Other, net	(2)	6
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	61	85
Derivative collateral, net	7	(1)
Accrued property, income and other taxes, net	12	18
Accounts payable and other liabilities	(51)	(3)
Net cash flows from operating activities	469	437
Cash flows from investing activities:
Capital expenditures	(439)	(366)
Other, net	(1)	27
Net cash flows from investing activities	(440)	(339)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	2	(74)
Other, net	(1)	0
Net cash flows from financing activities	1	(74)
Net change in cash and cash equivalents and restricted cash and cash equivalents	30	24
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	19	36
Cash and cash equivalents and restricted cash and cash equivalents at end of period	49	60
MidAmerican Funding, LLC and Subsidiaries [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(6)	(8)
Deferred income taxes and amortization of investment tax credits	153	93
Other, net	(3)	15
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(298)	16
Derivative collateral, net	(14)	1
Pension and other postretirement benefit plans	1	(6)
Accrued property, income and other taxes, net	(332)	(290)
Accounts payable and other liabilities	6	66
Net cash flows from operating activities	(92)	214
Cash flows from investing activities:
Capital expenditures	(298)	(472)
Purchases of marketable securities	(52)	(127)
Proceeds from sales of marketable securities	47	124
Other, net	0	6
Net cash flows from investing activities	(303)	(469)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	387	50
Other, net	0	(1)
Net cash flows from financing activities	394	52
Net change in cash and cash equivalents and restricted cash and cash equivalents	(1)	(203)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	46	331
Cash and cash equivalents and restricted cash and cash equivalents at end of period	45	128
Nevada Power Company [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(1)	(2)
Changes in regulatory assets and liabilities	(15)	3
Deferred income taxes and amortization of investment tax credits	(10)	(4)
Other, net	(1)	8
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	41	32
Accrued property, income and other taxes, net	3	(6)
Accounts payable and other liabilities	14	(41)
Net cash flows from operating activities	179	79
Cash flows from investing activities:
Capital expenditures	(106)	(111)
Net cash flows from investing activities	(106)	(111)
Cash flows from financing activities:
Other, net	(5)	(4)
Net cash flows from financing activities	(5)	140
Net change in cash and cash equivalents and restricted cash and cash equivalents	68	108
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	36	25
Cash and cash equivalents and restricted cash and cash equivalents at end of period	104	133
Sierra Pacific Power Company [Member]
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(1)	(1)
Changes in regulatory assets and liabilities	(13)	(10)
Deferred income taxes and amortization of investment tax credits	4	(3)
Other, net	0	1
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	8	1
Accrued property, income and other taxes, net	(3)	4
Accounts payable and other liabilities	1	(12)
Net cash flows from operating activities	42	54
Cash flows from investing activities:
Capital expenditures	(61)	(52)
Net cash flows from investing activities	(61)	(52)
Cash flows from financing activities:
Net proceeds from (repayments of) short-term debt	10	0
Other, net	(2)	(1)
Net cash flows from financing activities	8	(1)
Net change in cash and cash equivalents and restricted cash and cash equivalents	(11)	1
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	26	32
Cash and cash equivalents and restricted cash and cash equivalents at end of period	15	33
Eastern Energy Gas Holdings, LLC [Member]
Cash flows from operating activities:
Net income	191	202
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	80	93
Allowance for equity funds	(2)	(5)
Equity income, net of distributions	(5)	(1)
Changes in regulatory assets and liabilities	6	7
Deferred income taxes and amortization of investment tax credits	30	15
Other, net	0	(1)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(56)	357
Derivative collateral, net	2	9
Pension and other postretirement benefit plans	0	(18)
Accrued property, income and other taxes, net	(25)	(17)
Accounts payable and other liabilities	20	26
Net cash flows from operating activities	241	667
Cash flows from investing activities:
Capital expenditures	(55)	(76)
Other, net	(1)	(4)
Net cash flows from investing activities	(56)	(342)
Cash flows from financing activities:
Net cash flows from financing activities	(118)	(306)
Net change in cash and cash equivalents and restricted cash and cash equivalents	67	19
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	48	39
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 115	$ 58

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows - PacifiCorp - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income (Loss) Attributable to Parent	$ 4	$ 670
Increase (Decrease) in Allowance for Equity Funds Used During Construction	(26)	(34)
Changes in regulatory assets and liabilities	(9)	0
Deferred income taxes and amortization of investment tax credits	(135)	47
Other Noncash Income (Expense)	9	63
Trade receivables and other assets	(249)	(118)
Derivative collateral, net	14	(19)
Accrued property, income and other taxes, net	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Capital expenditures	(1,295)	(1,356)
Other, net	(29)	43
Net cash flows from investing activities	(1,374)	(1,474)
Net proceeds from (repayments of) short-term debt	409	(1,109)
Other, net	(9)	(32)
Net cash flows from financing activities	(191)	1,358
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
PacifiCorp [Member]
Net Income (Loss) Attributable to Parent	169	176
Depreciation and amortization	264	252
Increase (Decrease) in Allowance for Equity Funds Used During Construction	(13)	(21)
Changes in regulatory assets and liabilities	(4)	(16)
Deferred income taxes and amortization of investment tax credits	13	(30)
Other Noncash Income (Expense)	(2)	6
Trade receivables and other assets	61	85
Increase (Decrease) in Inventories	7	(26)
Derivative collateral, net	7	(1)
Increase (Decrease) in Prepaid Expense and Other Assets	6	(3)
Accrued property, income and other taxes, net	12	18
Accounts payable and other liabilities	(51)	(3)
Net cash flows from operating activities	469	437
Capital expenditures	(439)	(366)
Other, net	(1)	27
Net cash flows from investing activities	(440)	(339)
Net proceeds from (repayments of) short-term debt	2	(74)
Other, net	(1)	0
Net cash flows from financing activities	1	(74)
Net change in cash and cash equivalents and restricted cash and cash equivalents	30	24
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	19	36
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 49	$ 60

Statements of Cash Flows - MEC

Statements of Cash Flows - MEC - USD ($) $ in Millions	3 Months Ended
Statements of Cash Flows - MEC - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Net Income (Loss) Attributable to Parent	$ 4	$ 670
Allowance for equity funds	(26)	(34)
Deferred income taxes and amortization of investment tax credits	(135)	47
Other Noncash Income (Expense)	9	63
Trade receivables and other assets	(249)	(118)
Pension and other postretirement benefit plans	(21)	(23)
Accrued property, income and other taxes, net	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Capital expenditures	(1,295)	(1,356)
Purchases of marketable securities	(128)	(188)
Proceeds from sales of marketable securities	104	180
Other, net	(29)	43
Net cash flows from investing activities	(1,374)	(1,474)
Net proceeds from (repayments of) short-term debt	409	(1,109)
Other, net	(9)	(32)
Net cash flows from financing activities	(191)	1,358
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
Derivative collateral, net	14	(19)
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	147	151
Depreciation and amortization	207	176
Amortization of Utility Plant to Other Operating Expense	8	9
Allowance for equity funds	(6)	(8)
Deferred income taxes and amortization of investment tax credits	154	91
Asset Retirement Obligation, Cash Paid to Settle	(4)	(2)
Other Noncash Income (Expense)	(4)	14
Trade receivables and other assets	(299)	15
Increase (Decrease) in Inventories	46	(6)
Pension and other postretirement benefit plans	1	(6)
Accrued property, income and other taxes, net	(331)	(286)
Accounts payable and other liabilities	10	70
Net cash flows from operating activities	(85)	219
Capital expenditures	(298)	(472)
Purchases of marketable securities	(52)	(127)
Proceeds from sales of marketable securities	47	124
Other, net	0	5
Net cash flows from investing activities	(303)	(470)
Net proceeds from (repayments of) short-term debt	387	50
Other, net	0	(1)
Net cash flows from financing activities	387	49
Net change in cash and cash equivalents and restricted cash and cash equivalents	(1)	(202)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	45	330
Cash and cash equivalents and restricted cash and cash equivalents at end of period	44	128
Derivative collateral, net	$ (14)	$ 1

Consolidated Statements of Ca_3

Consolidated Statements of Cash Flows - MidAmerican Funding - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income (Loss) Attributable to Parent	$ 4	$ 670
Allowance for equity funds	(26)	(34)
Deferred income taxes and amortization of investment tax credits	(135)	47
Other Noncash Income (Expense)	9	63
Trade receivables and other assets	(249)	(118)
Derivative collateral, net	14	(19)
Pension and other postretirement benefit plans	(21)	(23)
Accrued property, income and other taxes, net	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Capital expenditures	(1,295)	(1,356)
Purchases of marketable securities	(128)	(188)
Proceeds from sales of marketable securities	104	180
Other, net	(29)	43
Net cash flows from investing activities	(1,374)	(1,474)
Net proceeds from (repayments of) short-term debt	409	(1,109)
Other, net	(9)	(32)
Net cash flows from financing activities	(191)	1,358
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
MidAmerican Funding, LLC and Subsidiaries [Member]
Net Income (Loss) Attributable to Parent	144	150
Depreciation and amortization	207	176
Amortization of Utility Plant to Other Operating Expense	8	9
Allowance for equity funds	(6)	(8)
Deferred income taxes and amortization of investment tax credits	153	93
Other Noncash Income (Expense)	(3)	15
Trade receivables and other assets	(298)	16
Increase (Decrease) in Inventories	46	(6)
Derivative collateral, net	(14)	1
Pension and other postretirement benefit plans	1	(6)
Accrued property, income and other taxes, net	(332)	(290)
Accounts payable and other liabilities	6	66
Net cash flows from operating activities	(92)	214
Capital expenditures	(298)	(472)
Purchases of marketable securities	(52)	(127)
Proceeds from sales of marketable securities	47	124
Other, net	0	6
Net cash flows from investing activities	(303)	(469)
Increase (Decrease) in Notes Payable, Related Parties, Current	7	3
Net proceeds from (repayments of) short-term debt	387	50
Other, net	0	(1)
Net cash flows from financing activities	394	52
Net change in cash and cash equivalents and restricted cash and cash equivalents	(1)	(203)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	46	331
Cash and cash equivalents and restricted cash and cash equivalents at end of period	45	128
Asset Retirement Obligation, Cash Paid to Settle	(4)	(2)
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	147	151
Depreciation and amortization	207	176
Amortization of Utility Plant to Other Operating Expense	8	9
Allowance for equity funds	(6)	(8)
Deferred income taxes and amortization of investment tax credits	154	91
Other Noncash Income (Expense)	(4)	14
Trade receivables and other assets	(299)	15
Increase (Decrease) in Inventories	46	(6)
Derivative collateral, net	(14)	1
Pension and other postretirement benefit plans	1	(6)
Accrued property, income and other taxes, net	(331)	(286)
Accounts payable and other liabilities	10	70
Net cash flows from operating activities	(85)	219
Capital expenditures	(298)	(472)
Purchases of marketable securities	(52)	(127)
Proceeds from sales of marketable securities	47	124
Other, net	0	5
Net cash flows from investing activities	(303)	(470)
Net proceeds from (repayments of) short-term debt	387	50
Other, net	0	(1)
Net cash flows from financing activities	387	49
Net change in cash and cash equivalents and restricted cash and cash equivalents	(1)	(202)
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	45	330
Cash and cash equivalents and restricted cash and cash equivalents at end of period	44	128
Asset Retirement Obligation, Cash Paid to Settle	$ (4)	$ (2)

Consolidated Statements of Ca_4

Consolidated Statements of Cash Flows - NPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income (Loss) Attributable to Parent	$ 4	$ 670
Allowance for equity funds	(26)	(34)
Changes in regulatory assets and liabilities	(9)	0
Deferred income taxes and amortization of investment tax credits	(135)	47
Other Noncash Income (Expense)	9	63
Trade receivables and other assets	(249)	(118)
Accrued property, income and other taxes, net	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Capital expenditures	(1,295)	(1,356)
Net cash flows from investing activities	(1,374)	(1,474)
Other, net	(9)	(32)
Net cash flows from financing activities	(191)	1,358
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
Nevada Power Company [Member]
Net Income (Loss) Attributable to Parent	2	(4)
Depreciation and amortization	101	90
Allowance for equity funds	(1)	(2)
Changes in regulatory assets and liabilities	(15)	3
Deferred income taxes and amortization of investment tax credits	(10)	(4)
Deferred Energy Change	41	4
Other Noncash Income (Expense)	(1)	8
Trade receivables and other assets	41	32
Increase (Decrease) in Inventories	4	(1)
Accrued property, income and other taxes, net	3	(6)
Accounts payable and other liabilities	14	(41)
Net cash flows from operating activities	179	79
Capital expenditures	(106)	(111)
Net cash flows from investing activities	(106)	(111)
Proceeds from long-term debt	0	719
Repayments of BHE senior debt and junior subordinated debentures	0	(575)
Other, net	(5)	(4)
Net cash flows from financing activities	(5)	140
Net change in cash and cash equivalents and restricted cash and cash equivalents	68	108
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	36	25
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 104	$ 133

Consolidated Statements of Ca_5

Consolidated Statements of Cash Flows - SPPC - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Net Income (Loss) Attributable to Parent	$ 4	$ 670
Allowance for equity funds	(26)	(34)
Changes in regulatory assets and liabilities	(9)	0
Deferred income taxes and amortization of investment tax credits	(135)	47
Other Noncash Income (Expense)	(9)	(63)
Trade receivables and other assets	(249)	(118)
Accrued property, income and other taxes, net	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Capital expenditures	(1,295)	(1,356)
Net cash flows from investing activities	(1,374)	(1,474)
Net proceeds from (repayments of) short-term debt	409	(1,109)
Other, net	(9)	(32)
Net cash flows from financing activities	(191)	1,358
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
Sierra Pacific Power Company [Member]
Net Income (Loss) Attributable to Parent	28	25
Depreciation and amortization	36	34
Allowance for equity funds	(1)	(1)
Changes in regulatory assets and liabilities	(13)	(10)
Deferred income taxes and amortization of investment tax credits	4	(3)
Deferred Energy Change	(18)	14
Amortization of Deferred Charges	(3)	4
Other Noncash Income (Expense)	0	(1)
Trade receivables and other assets	8	1
Increase (Decrease) in Inventories	(3)	3
Accrued property, income and other taxes, net	(3)	4
Accounts payable and other liabilities	1	(12)
Net cash flows from operating activities	42	54
Capital expenditures	(61)	(52)
Net cash flows from investing activities	(61)	(52)
Net proceeds from (repayments of) short-term debt	10	0
Other, net	(2)	(1)
Net cash flows from financing activities	8	(1)
Net change in cash and cash equivalents and restricted cash and cash equivalents	(11)	1
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	26	32
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 15	$ 33

Consolidated Statements of Ca_6

Consolidated Statements of Cash Flows (Unaudited) - EEGH - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 110	$ 673
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	927	821
Allowance for equity funds	(26)	(34)
Equity income, net of distributions	221	29
Changes in regulatory assets and liabilities	(9)	0
Deferred income taxes	(135)	47
Other, net	9	63
Changes in other operating assets and liabilities:
Trade receivables and other assets	(249)	(118)
Derivative collateral, net	14	(19)
Pension and other postretirement benefit plans	(21)	(23)
Accrued property, income and other taxes	(453)	(364)
Accounts payable and other liabilities	19	117
Net cash flows from operating activities	1,525	1,165
Cash flows from investing activities:
Capital expenditures	(1,295)	(1,356)
Other, net	(29)	43
Net cash flows from investing activities	(1,374)	(1,474)
Cash flows from financing activities:
Net cash flows from financing activities	(191)	1,358
Net change in cash and cash equivalents and restricted cash and cash equivalents	(39)	1,036
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	1,445	1,268
Cash and cash equivalents and restricted cash and cash equivalents at end of period	1,406	2,304
Eastern Energy Gas Holdings, LLC [Member]
Cash flows from operating activities:
Net income	191	202
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	80	93
Allowance for equity funds	(2)	(5)
Equity income, net of distributions	(5)	(1)
Changes in regulatory assets and liabilities	6	7
Deferred income taxes	30	15
Other, net	0	(1)
Changes in other operating assets and liabilities:
Trade receivables and other assets	(56)	357
Derivative collateral, net	2	9
Pension and other postretirement benefit plans	0	(18)
Accrued property, income and other taxes	(25)	(17)
Accounts payable and other liabilities	20	26
Net cash flows from operating activities	241	667
Cash flows from investing activities:
Capital expenditures	(55)	(76)
Loans to affiliates	0	(262)
Other, net	(1)	(4)
Net cash flows from investing activities	(56)	(342)
Cash flows from financing activities:
Net repayments of short-term debt	0	(32)
Repayment of notes payable, net	(9)	(5)
Distributions	(109)	(269)
Net cash flows from financing activities	(118)	(306)
Net change in cash and cash equivalents and restricted cash and cash equivalents	67	19
Cash and cash equivalents and restricted cash and cash equivalents at beginning of period	48	39
Cash and cash equivalents and restricted cash and cash equivalents at end of period	$ 115	$ 58

General

General	3 Months Ended
General	Mar. 31, 2021
Segment Reporting Information [Line Items]
General/Organization and Operations	General Berkshire Hathaway Energy Company ("BHE") is a holding company that owns a highly diversified portfolio of locally managed businesses principally engaged in the energy industry (collectively with its subsidiaries, the "Company") and is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The Company's operations are organized as eight business segments: PacifiCorp and its subsidiaries ("PacifiCorp"), MidAmerican Funding, LLC and its subsidiaries ("MidAmerican Funding") (which primarily consists of MidAmerican Energy Company ("MidAmerican Energy")), NV Energy, Inc. and its subsidiaries ("NV Energy") (which primarily consists of Nevada Power Company and its subsidiaries ("Nevada Power") and Sierra Pacific Power Company and its subsidiaries ("Sierra Pacific")), Northern Powergrid Holdings Company ("Northern Powergrid") (which primarily consists of Northern Powergrid (Northeast) plc and Northern Powergrid (Yorkshire) plc), BHE Pipeline Group, LLC and its subsidiaries (which primarily consists of BHE GT&S, LLC ("BHE GT&S"), Northern Natural Gas Company ("Northern Natural Gas") and Kern River Gas Transmission Company ("Kern River")), BHE Transmission (which consists of BHE Canada Holdings Corporation ("BHE Canada") (which primarily consists of AltaLink, L.P. ("AltaLink")) and BHE U.S. Transmission, LLC), BHE Renewables (which primarily consists of BHE Renewables, LLC and CalEnergy Philippines) and HomeServices of America, Inc. and its subsidiaries ("HomeServices"). The Company, through these locally managed and operated businesses, owns four utility companies in the United States serving customers in 11 states, two electricity distribution companies in Great Britain, five interstate natural gas pipeline companies and interests in a liquefied natural gas ("LNG") export, import and storage facility in the United States, an electric transmission business in Canada, interests in electric transmission businesses in the United States, a renewable energy business primarily investing in wind, solar, geothermal and hydroelectric projects, the largest residential real estate brokerage firm in the United States and one of the largest residential real estate brokerage franchise networks in the United States. The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of March 31, 2021 and for the three-month periods ended March 31, 2021 and 2020. The results of operations for the three-month period ended March 31, 2021 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in the Company's Annual Report on Form 10-K for the year ended December 31, 2020 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in the Company's assumptions regarding significant accounting estimates and policies during the three-month period ended March 31, 2021.
PacifiCorp [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General PacifiCorp, which includes PacifiCorp and its subsidiaries, is a United States regulated electric utility company serving retail customers, including residential, commercial, industrial, irrigation and other customers in portions of Utah, Oregon, Wyoming, Washington, Idaho and California. PacifiCorp owns, or has interests in, a number of thermal, hydroelectric, wind-powered and geothermal generating facilities, as well as electric transmission and distribution assets. PacifiCorp also buys and sells electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants. PacifiCorp is subject to comprehensive state and federal regulation. PacifiCorp's subsidiaries support its electric utility operations by providing coal mining services. PacifiCorp is an indirect subsidiary of Berkshire Hathaway Energy Company ("BHE"), a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of March 31, 2021 and for the three-month periods ended March 31, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income materially equals comprehensive income for the three-month periods ended March 31, 2021 and 2020. The results of operations for the three-month periods ended March 31, 2021 and 2020 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in PacifiCorp's Annual Report on Form 10-K for the year ended December 31, 2020 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in PacifiCorp's assumptions regarding significant accounting estimates and policies during the three-month period ended March 31, 2021.
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General MidAmerican Energy Company ("MidAmerican Energy") is a public utility with electric and natural gas operations and is the principal subsidiary of MHC Inc. ("MHC"). MHC is a holding company that conducts no business other than the ownership of its subsidiaries. MHC's nonregulated subsidiary is Midwest Capital Group, Inc. MHC is the direct, wholly owned subsidiary of MidAmerican Funding, LLC ("MidAmerican Funding"), which is an Iowa limited liability company with Berkshire Hathaway Energy Company ("BHE") as its sole member. BHE is a holding company based in Des Moines, Iowa, that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Financial Statements as of March 31, 2021, and for the three-month periods ended March 31, 2021 and 2020. The Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three-month period ended March 31, 2021 and 2020. The results of operations for the three-month periods ended March 31, 2021, are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Financial Statements. Note 2 of Notes to Financial Statements included in MidAmerican Energy's Annual Report on Form 10-K for the year ended December 31, 2020, describes the most significant accounting policies used in the preparation of the unaudited Financial Statements. There have been no significant changes in MidAmerican Energy's assumptions regarding significant accounting estimates and policies during the three-month period ended March 31, 2021.
MidAmerican Funding, LLC and Subsidiaries [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General MidAmerican Funding, LLC ("MidAmerican Funding") is an Iowa limited liability company with Berkshire Hathaway Energy Company ("BHE") as its sole member. BHE is a holding company based in Des Moines, Iowa, that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). MidAmerican Funding's direct, wholly owned subsidiary is MHC Inc. ("MHC"), which constitutes substantially all of MidAmerican Funding's assets, liabilities and business activities except those related to MidAmerican Funding's long-term debt securities. MHC conducts no business other than the ownership of its subsidiaries. MHC's principal subsidiary is MidAmerican Energy Company ("MidAmerican Energy"), a public utility with electric and natural gas operations, and its direct, wholly owned nonregulated subsidiary is Midwest Capital Group, Inc. The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of March 31, 2021, and for the three-month periods ended March 31, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income materially equals comprehensive income for the three-month period ended March 31, 2021 and 2020. The results of operations for the three-month periods ended March 31, 2021, are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in MidAmerican Funding's Annual Report on Form 10-K for the year ended December 31, 2020, describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in MidAmerican Funding's assumptions regarding significant accounting estimates and policies during the three-month period ended March 31, 2021.
Nevada Power Company [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General Nevada Power Company, together with its subsidiaries ("Nevada Power"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Sierra Pacific Power Company and its subsidiaries ("Sierra Pacific") and certain other subsidiaries. Nevada Power is a United States regulated electric utility company serving retail customers, including residential, commercial and industrial customers, primarily in the Las Vegas, North Las Vegas, Henderson and adjoining areas. NV Energy is an indirect wholly owned subsidiary of Berkshire Hathaway Energy Company ("BHE"). BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of March 31, 2021 and for the three-month periods ended March 31, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three-month periods ended March 31, 2021 and 2020. The results of operations for the three-month period ended March 31, 2021 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in Nevada Power's Annual Report on Form 10-K for the year ended December 31, 2020 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in Nevada Power's assumptions regarding significant accounting estimates and policies during the three-month period ended March 31, 2021.
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General Sierra Pacific Power Company, together with its subsidiaries ("Sierra Pacific"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Nevada Power Company and its subsidiaries ("Nevada Power") and certain other subsidiaries. Sierra Pacific is a United States regulated electric utility company serving retail customers, including residential, commercial and industrial customers and regulated retail natural gas customers primarily in northern Nevada. NV Energy is an indirect wholly owned subsidiary of Berkshire Hathaway Energy Company ("BHE"). BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of March 31, 2021 and for the three-month periods ended March 31, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three-month periods ended March 31, 2021 and 2020. The results of operations for the three-month period ended March 31, 2021 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in Sierra Pacific's Annual Report on Form 10-K for the year ended December 31, 2020 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in Sierra Pacific's assumptions regarding significant accounting estimates and policies during the three-month period ended March 31, 2021.
Eastern Energy Gas Holdings, LLC [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General Eastern Energy Gas Holdings, LLC and its subsidiaries ("Eastern Energy Gas") is a holding company that conducts business activities consisting of Federal Energy Regulatory Commission ("FERC")-regulated interstate natural gas transportation pipeline and underground storage operations in the eastern region of the United States and operates Cove Point LNG, LP ("Cove Point"), a liquefied natural gas ("LNG") export, import and storage facility. Eastern Energy Gas owns 100% of the general partner interest and 25% of the limited partnership interest in Cove Point. In addition, Eastern Energy Gas owns a 50% noncontrolling interest in Iroquois Gas Transmission System, L.P. ("Iroquois"), a 416-mile FERC-regulated interstate natural gas transportation pipeline. In July 2020, Dominion Energy, Inc. ("DEI") entered into an agreement to sell substantially all of its gas transmission and storage operations, including Eastern Energy Gas and a 25% limited partnership interest in Cove Point, to Berkshire Hathaway Energy Company ("BHE"). Approval of the transaction under the Hart-Scott-Rodino Act was not obtained within 75 days and DEI and BHE mutually agreed to a dual-phase closing consisting of two separate disposal groups identified as the acquisition of substantially all of the natural gas transmission and storage business of DEI and Dominion Energy Questar Corporation, exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "Questar Pipeline Group") (the "GT&S Transaction") and the proposed sale of the Questar Pipeline Group by DEI to BHE pursuant to a purchase and sale agreement entered into on October 5, 2020 ("Q-Pipe Transaction"). The Q-Pipe Transaction is currently anticipated to close in the first half of 2021, contingent on clearance or approval under the Hart-Scott-Rodino Act, and other customary closing and regulatory conditions. Prior to the completion of the GT&S Transaction, Eastern Energy Gas finalized a restructuring whereby Eastern Energy Gas distributed the Questar Pipeline Group and a 50% noncontrolling interest in Cove Point to DEI. This restructuring was accounted for by Eastern Energy Gas as a reorganization of entities under common control and the disposition was reflected as an equity transaction. The disposition was not reported as a discontinued operation as the disposal did not represent a strategic shift in the way management had intended to run the business. On November 1, 2020, BHE completed the GT&S Transaction. As a result of the GT&S Transaction, Eastern Energy Gas became an indirect wholly owned subsidiary of BHE. BHE is a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in the energy industry. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. ("Berkshire Hathaway"). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of March 31, 2021 and for the three-month periods ended March 31, 2021 and 2020. The results of operations for the three-month periods ended March 31, 2021 are not necessarily indicative of the results to be expected for the full year. The preparation of the unaudited Consolidated Financial Statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the unaudited Consolidated Financial Statements and the reported amounts of revenue and expenses during the period. Actual results may differ from the estimates used in preparing the unaudited Consolidated Financial Statements. Note 2 of Notes to Consolidated Financial Statements included in Eastern Energy Gas' Annual Report on Form 10-K for the year ended December 31, 2020 describes the most significant accounting policies used in the preparation of the unaudited Consolidated Financial Statements. There have been no significant changes in Eastern Energy Gas' assumptions regarding significant accounting estimates and policies during the three-month period ended March 31, 2021.

Business Combination Disclosure

Business Combination Disclosure Business Combination Disclosure (Notes)	3 Months Ended
	Mar. 31, 2021
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Business Acquisition BHE GT&S Acquisition Transaction Description On November 1, 2020, BHE completed its acquisition of substantially all of the natural gas transmission and storage business of Dominion Energy, Inc. ("DEI") and Dominion Energy Questar Corporation ("Dominion Questar"), exclusive of Dominion Energy Questar Pipeline, LLC and related entities (the "Questar Pipeline Group") (the "GT&S Transaction"). Under the terms of the Purchase and Sale Agreement, dated July 3, 2020 (the "GT&S Purchase Agreement"), BHE paid approximately $2.5 billion in cash, after post-closing adjustments (the "GT&S Cash Consideration"), and assumed approximately $5.6 billion of existing indebtedness for borrowed money, including fair value adjustments, for 100% of the equity interests of Eastern Gas Transmission and Storage, Inc. ("EGTS") (formerly known as Dominion Energy Transmission, Inc.) and Carolina Gas Transmission, LLC (formerly known as Dominion Energy Carolina Gas Transmission, LLC); 50% of the equity interests of Iroquois Gas Transmission System L.P. ("Iroquois"); and a 25% economic interest in Cove Point LNG, LP ("Cove Point") (formerly known as Dominion Energy Cove Point LNG, LP), consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE became the operator of Cove Point after the GT&S Transaction. The GT&S Transaction received clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR Approval") in October 2020, and approval by the Department of Energy with respect to a change in control of Cove Point and the Federal Communications Commission with respect to the transfer of certain licenses earlier in 2020. On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the Questar Pipeline Group from Dominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in the first half of 2021, for a cash purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for cash and indebtedness as of the closing, and the assumption of approximately $430 million of existing indebtedness for borrowed money. DEI is also a party to the Q-Pipe Purchase Agreement, as guarantor for certain provisions regarding the Purchase Price Repayment Amount (as defined below) and other matters. Under the Q-Pipe Purchase Agreement, BHE delivered the Q-Pipe Cash Consideration of approximately $1.3 billion, which is included in other current assets on the Consolidated Balance Sheet as of March 31, 2021 and December 31, 2020, to Dominion Questar on November 2, 2020. If the Q-Pipe Transaction does not close, Dominion Questar has agreed to repay all or (depending on the repayment date) substantially all of the Q-Pipe Cash Consideration (the "Purchase Price Repayment Amount") to BHE on or prior to December 31, 2021. If HSR Approval has not been obtained by June 30, 2021, upon BHE's written request, Dominion Questar will seek alternative buyers for all or a material portion of the Questar Pipeline Group (an "Alternative Transaction"). The Purchase Price Repayment Amount may be paid in cash or in shares of common stock, no par value, of DEI, or a combination thereof, subject to certain limitations as to stock repayments set forth in the Q-Pipe Purchase Agreement; provided any payment on or after December 15, 2021 must be paid in cash only. The assets acquired in the GT&S Transaction include (i) approximately 5,400 miles of operated natural gas transmission, gathering and storage pipelines with approximately 12.5 billion cubic feet ("Bcf") per day of design capacity; (ii) 420 Bcf of operated natural gas storage design capacity, of which 306 Bcf is owned by BHE GT&S; and (iii) an LNG export, import and storage facility with LNG storage capacity of approximately 14.6 billions of cubic feet equivalent. On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and the Q-Pipe Cash Consideration. Included in BHE's Consolidated Statement of Operations within the BHE Pipeline Group reportable segment for the three-month periods ended March 31, 2021, is operating revenue and net income attributable to BHE shareholders of $559 million and $107 million, respectively, as a result of including BHE GT&S from November 1, 2020. Preliminary Allocation of Purchase Price BHE GT&S' assets acquired and liabilities assumed were measured at estimated fair value at closing. The majority of BHE GT&S' operations are subject to the rate-setting authority of the Federal Energy Regulatory Commission ("FERC") and are accounted for pursuant to GAAP, including the authoritative guidance for regulated operations. The rate-setting and cost-recovery provisions provide for revenues derived from costs, including a return on investment of assets and liabilities included in rate base. As such, the fair value of BHE GT&S' assets acquired and liabilities assumed subject to these rate-setting provisions are assumed to approximate their carrying values and, therefore, no fair value adjustments have been reflected related to these amounts. The fair value of BHE GT&S' assets acquired and liabilities assumed not subject to the rate-setting provisions discussed above was determined using an income and cost approach. The income approach is based on significant estimates and assumptions, including Level 3 inputs, which are judgmental in nature. The estimates and assumptions include the projected timing and amount of future cash flows, discount rates reflecting the risk inherent in the future cash flows and future market prices. Additionally, the fair value of long-term debt assumed was determined based on quoted market prices, which is considered a Level 2 fair value measurement. The fair value of certain contracts and property, plant and equipment related to non-regulated operations, certain regulatory assets and other items included in rate base, an equity method investment and deferred income tax amounts are provisional and are subject to revision for up to 12 months following the acquisition date until the related valuations are completed. These items may be adjusted through regulatory assets or liabilities, to the extent recoverable in rates, or goodwill provided additional information is obtained about the facts and circumstances that existed as of the acquisition date. Such information includes, but is not limited to, the receipt of further information regarding the fair value of the contracts and property, plant and equipment related to non-regulated operations, the equity method investment and any associated deferred income tax amounts as well as the evolution of the rate-making process for regulated operations. The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed as of the acquisition date (in millions): Fair Value Current assets, including cash and cash equivalents of $104 $ 569 Property, plant and equipment 9,254 Goodwill 1,732 Regulatory assets 108 Deferred income taxes 275 Other long-term assets 1,424 Total assets 13,362 Current liabilities, including current portion of long-term debt of $1,200 1,567 Long-term debt, less current portion 4,415 Regulatory liabilities 661 Other long-term liabilities 289 Total liabilities 6,932 Noncontrolling interest 3,916 Net assets acquired $ 2,514 Goodwill The excess of the purchase price paid over the estimated fair values of the identifiable assets acquired and liabilities assumed totaled $1.7 billion and is reflected as goodwill in the BHE Pipeline Group reportable segment. The goodwill reflects the value paid primarily for the long-term opportunity to improve operating results through the efficient management of operating expenses and the deployment of capital. Goodwill is not amortized, but rather is reviewed annually for impairment or more frequently if indicators of impairment exist. For income tax purposes, the GT&S Acquisition is treated as a deemed asset acquisition resulting from tax elections being made, therefore all tax goodwill is deductible. Due to book and tax basis differences of certain items, book and tax goodwill will differ. The amount of tax goodwill is approximately $0.9 billion and will be amortized over 15 years. Pro Forma Financial Information The following unaudited pro forma financial information reflects the consolidated results of operations of BHE and the amortization of the purchase price adjustments assuming the acquisition had taken place on January 1, 2019, excluding non-recurring transaction costs incurred by BHE during 2020 (in millions): Three-Month Period Ended March 31, 2020 Operating revenue $ 5,056 Net income attributable to BHE shareholders $ 773

Property, Plant and Equipment,

Property, Plant and Equipment, Net	3 Months Ended
Property, Plant and Equipment, Net	Mar. 31, 2021
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of Depreciable March 31, December 31, Life 2021 2020 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 87,898 $ 86,730 Interstate natural gas pipeline assets 3-80 years 16,712 16,667 104,610 103,397 Accumulated depreciation and amortization (31,653) (30,662) Regulated assets, net 72,957 72,735 Nonregulated assets: Independent power plants 5-30 years 7,034 7,012 Other assets 3-40 years 5,794 5,659 12,828 12,671 Accumulated depreciation and amortization (2,337) (2,586) Nonregulated assets, net 10,491 10,085 Net operating assets 83,448 82,820 Construction work-in-progress 3,309 3,308 Property, plant and equipment, net $ 86,757 $ 86,128 Construction work-in-progress includes $2.9 billion as of March 31, 2021 and $3.2 billion as of December 31, 2020, related to the construction of regulated assets.
MidAmerican Funding, LLC and Subsidiaries [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, NetRefer to Note 3 of MidAmerican Energy's Notes to Financial Statements.
MidAmerican Energy Company [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of March 31, December 31, Depreciable Life 2021 2020 Utility plant in service, net: Generation 20-70 years $ 17,083 $ 16,980 Transmission 52-75 years 2,372 2,365 Electric distribution 20-75 years 4,433 4,369 Natural gas distribution 29-75 years 1,970 1,955 Utility plant in service 25,858 25,669 Accumulated depreciation and amortization (7,061) (6,902) Utility plant in service, net 18,797 18,767 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1) (1) Nonregulated property, net 6 6 18,803 18,773 Construction work-in-progress 420 506 Property, plant and equipment, net $ 19,223 $ 19,279
PacifiCorp [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of March 31, December 31, Depreciable Life 2021 2020 Utility Plant: Generation 15 - 59 years $ 13,355 $ 12,861 Transmission 60 - 90 years 7,686 7,632 Distribution 20 - 75 years 7,725 7,660 Intangible plant (1) 5 - 75 years 1,069 1,054 Other 5 - 60 years 1,513 1,510 Utility plant in service 31,348 30,717 Accumulated depreciation and amortization (9,980) (9,838) Utility plant in service, net 21,368 20,879 Other non-regulated, net of accumulated depreciation and amortization 14 - 95 years 9 9 Plant, net 21,377 20,888 Construction work-in-progress 1,158 1,542 Property, plant and equipment, net $ 22,535 $ 22,430 (1) Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years. Effective January 1, 2021, PacifiCorp revised its depreciation rates based on its recent depreciation study that was approved by its state regulatory commissions, other than in California. The approved depreciation rates resulted in an increase in depreciation expense of approximately $37 million for the three-month period ended March 31, 2021 compared to the three-month period ended March 31, 2020 based on historical property, plant and equipment balances and including depreciation of certain coal-fueled generating units in Washington over accelerated periods.
Nevada Power Company [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life March 31, December 31, 2021 2020 Utility plant: Generation 30 - 55 years $ 3,691 $ 3,690 Transmission 45 - 70 years 1,465 1,468 Distribution 20 - 65 years 3,803 3,771 General and intangible plant 5 - 65 years 798 791 Utility plant 9,757 9,720 Accumulated depreciation and amortization (3,224) (3,162) Utility plant, net 6,533 6,558 Other non-regulated, net of accumulated depreciation and amortization 45 years 1 1 Plant, net 6,534 6,559 Construction work-in-progress 217 142 Property, plant and equipment, net $ 6,751 $ 6,701
Sierra Pacific Power Company [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life March 31, December 31, 2021 2020 Utility plant: Electric generation 25 - 60 years $ 1,131 $ 1,130 Electric transmission 50 - 100 years 917 908 Electric distribution 20 - 100 years 1,763 1,754 Electric general and intangible plant 5 - 70 years 193 189 Natural gas distribution 35 - 70 years 431 429 Natural gas general and intangible plant 5 - 70 years 15 15 Common general 5 - 70 years 357 355 Utility plant 4,807 4,780 Accumulated depreciation and amortization (1,783) (1,755) Utility plant, net 3,024 3,025 Other non-regulated, net of accumulated depreciation and amortization 70 years 2 2 Plant, net 3,026 3,027 Construction work-in-progress 162 137 Property, plant and equipment, net $ 3,188 $ 3,164
Eastern Energy Gas Holdings, LLC [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of March 31, December 31, Depreciable Life 2021 2020 Utility Plant: Interstate natural gas pipeline assets 24 - 43 years $ 8,385 $ 8,382 Intangible plant 5 - 10 years 114 115 Utility plant in service 8,499 8,497 Accumulated depreciation and amortization (2,792) (2,759) Utility plant in service, net 5,707 5,738 Nonutility Plant: LNG facility 40 years 4,460 4,454 Intangible plant 14 years 25 25 Nonutility plant in service 4,485 4,479 Accumulated depreciation and amortization (320) (283) Nonutility plant in service, net 4,165 4,196 Plant, net 9,872 9,934 Construction work- in-progress 227 210 Property, plant and equipment, net $ 10,099 $ 10,144 Construction work-in-progress includes $211 million and $196 million as of March 31, 2021 and December 31, 2020, respectively, related to the construction of utility plant.

Investments and Restricted Cash

Investments and Restricted Cash and Cash Equivalents and Investments	3 Months Ended
	Mar. 31, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Investments and Restricted Cash and Cash Equivalents and Investments	Investments and Restricted Cash and Cash Equivalents and Investments Investments and restricted cash and cash equivalents and investments consists of the following (in millions): As of March 31, December 31, 2021 2020 Investments: BYD Company Limited common stock $ 4,773 $ 5,897 Rabbi trusts 452 440 Other 288 263 Total investments 5,513 6,600 Equity method investments: BHE Renewables tax equity investments 5,399 5,626 Iroquois Gas Transmission System, L.P. 586 580 Electric Transmission Texas, LLC 581 594 JAX LNG, LLC 80 75 Bridger Coal Company 68 74 Other 113 118 Total equity method investments 6,827 7,067 Restricted cash and cash equivalents and investments: Quad Cities Station nuclear decommissioning trust funds 697 676 Other restricted cash and cash equivalents 130 155 Total restricted cash and cash equivalents and investments 827 831 Total investments and restricted cash and cash equivalents and investments $ 13,167 $ 14,498 Reflected as: Current assets $ 157 $ 178 Noncurrent assets 13,010 14,320 Total investments and restricted cash and cash equivalents and investments $ 13,167 $ 14,498 Investments (Losses) gains on marketable securities, net recognized during the period consists of the following (in millions): Three-Month Periods Ended March 31, 2021 2020 Unrealized (losses) gains recognized on marketable securities still held at the reporting date $ (1,119) $ 25 Net gains recognized on marketable securities sold during the period 1 2 (Losses) gains on marketable securities, net $ (1,118) $ 27 Equity Method Investments The Company has invested in projects sponsored by third parties, commonly referred to as tax equity investments. Once a project achieves commercial operation, the Company enters into a partnership agreement with the project sponsor that directs and allocates the operating profits and tax benefits from the project. Certain of the Company's tax equity investments are located in Texas and have physical settlement hedge obligations that were negatively impacted due to production shortfalls during periods of extreme market pricing volatility as a result of the February 2021 polar vortex weather event. The Company recognized pre-tax equity losses of $218 million, or after-tax losses of $23 million inclusive of production tax credits ("PTCs") of $148 million and other income tax benefits of $47 million, during the three-month period ended March 31, 2021, on its tax equity investments, largely due to the February 2021 polar vortex weather event. The losses for the impacted tax equity investments were based upon the terms of each partnership agreement, as amended, and are subject to change as project-by-project discussions are ongoing among the Company and the respective hedge provider and project sponsor. As of March 31, 2021, the carrying value of the impacted tax equity investments totaled $2.8 billion. Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 1,276 $ 1,290 Restricted cash and cash equivalents 117 140 Investments and restricted cash and cash equivalents and investments 13 15 Total cash and cash equivalents and restricted cash and cash equivalents $ 1,406 $ 1,445
Eastern Energy Gas Holdings, LLC [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Investments and Restricted Cash and Cash Equivalents and Investments	Investments and Restricted Cash and Cash Equivalents Investments and restricted cash and cash equivalents consists of the following (in millions): As of March 31, December 31, 2021 2020 Investments: Investment funds $ 12 $ — Equity method investments: Iroquois 250 244 Total investments 262 244 Restricted cash and cash equivalents: Customer deposits 9 13 Total restricted cash and cash equivalents 9 13 Total investments and restricted cash and cash equivalents $ 271 $ 257 Reflected as: Current assets $ 9 $ 13 Noncurrent assets 262 244 Total investments and restricted cash and cash equivalents $ 271 $ 257 Equity Method Investments Eastern Energy Gas, through a subsidiary, owns 50% of Iroquois, which owns and operates an interstate natural gas pipeline located in the states of New York and Connecticut. Prior to the GT&S Transaction, Eastern Energy Gas, through the Questar Pipeline Group, owned 50% of White River Hub, which owns and operates a natural gas pipeline in northwest Colorado. As of March 31, 2021 and December 31, 2020, the carrying amount of Eastern Energy Gas' investments exceeded its share of underlying equity in net assets by $130 million. The difference reflects equity method goodwill and is not being amortized. Eastern Energy Gas received distributions from its investments of $10 million and $15 million for the three-month periods ended March 31, 2021 and 2020, respectively. Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020 consist substantially of customer deposits as allowed under the FERC gas tariffs. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 106 $ 35 Restricted cash and cash equivalents 9 13 Total cash and cash equivalents and restricted cash and cash equivalents $ 115 $ 48

Regulatory Matters

Regulatory Matters	3 Months Ended
Regulatory Matters	Mar. 31, 2021
MidAmerican Energy Company [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory Matters	Regulatory Matters Natural Gas Purchased for Resale In February 2021, severe cold weather over the central United States caused disruptions in natural gas supply from the southern part of the United States. These disruptions, combined with increased demand, resulted in historically high prices for natural gas purchased for resale to MidAmerican Energy's retail customers and caused an approximate $245 million increase in natural gas costs above those normally expected. These increased costs are reflected in cost of natural gas purchased for resale and other on the Statement of Operations and their recovery through the Purchased Gas Adjustment Clause is reflected in regulated natural gas and other revenue. To mitigate the impact to customers, the Iowa Utilities Board ordered the recovery of these higher costs to be applied to natural gas sales over the period April 2021 through April 2022. While sufficient liquidity is available to MidAmerican Energy, the increased costs and longer recovery period resulted in higher working capital requirements during three-month period ended March 31, 2021.
MidAmerican Funding, LLC and Subsidiaries [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory Matters	Regulatory MattersRefer to Note 4 of MidAmerican Energy's Notes to Financial Statements.
Eastern Energy Gas Holdings, LLC [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory Matters	Regulatory Matters Eastern Gas Transmission and Storage, Inc. In July 2017, the FERC audit staff communicated to Eastern Gas Transmission and Storage, Inc. ("EGTS") that it had substantially completed an audit of EGTS' compliance with the accounting and reporting requirements of the FERC's Uniform System of Accounts and provided a description of matters and preliminary recommendations. In November 2017, the FERC audit staff issued its audit report. In December 2017, EGTS provided its response to the audit report. EGTS requested FERC review of the contested findings and submitted its plan for compliance with the uncontested portions of the report. EGTS reached resolution of certain matters with the FERC in the fourth quarter of 2018. EGTS recognized a charge of $129 million ($94 million after-tax) for the year ended December 31, 2018 for a disallowance of plant, originally established beginning in 2012, for the resolution of one matter with the FERC. In December 2020, the FERC issued a final ruling on the remaining matter, which resulted in a $43 million ($31 million after-tax) charge for disallowance of capitalized allowance for funds used during construction. As a condition of the December 2020 ruling, EGTS will file its proposed accounting entries and supporting documentation with the FERC by the second quarter of 2021; however, EGTS does not expect a material change from the charge recognized. Cove Point In January 2020, pursuant to the terms of a previous settlement, Cove Point filed a general rate case for its FERC-jurisdictional services, with proposed rates to be effective March 1, 2020. Cove Point proposed an annual cost-of-service of $182 million. In February 2020, the FERC approved suspending the changes in rates for five months following the proposed effective date, until August 1, 2020, subject to refund. In November 2020, Cove Point reached an agreement in principle with the active participants in the general rate case proceeding. Under the terms of the agreement in principle, Cove Point's rates effective August 1, 2020 result in an increase to annual revenues of $4 million and a decrease in annual depreciation expense of $1 million, compared to the rates in effect prior to August 1, 2020. The interim settlement rates were implemented November 1, 2020, and Cove Point's provision for rate refunds for August 2020 through October 2020 totaled $7 million. The agreement in principle was reflected in a stipulation and agreement filed with the FERC in January 2021. In March 2021, the FERC approved the stipulation and agreement and the rate refunds to customers were processed in late April 2021.

Cash and Cash Equivalents and R

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosures (Notes)	3 Months Ended
	Mar. 31, 2021
Sierra Pacific Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist of funds restricted by the Public Utilities Commission of Nevada ("PUCN") for a certain renewable energy contract. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 8 $ 19 Restricted cash and cash equivalents included in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 15 $ 26
Nevada Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist of funds restricted by the Public Utilities Commission of Nevada ("PUCN") for a certain renewable energy contract. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 92 $ 25 Restricted cash and cash equivalents included in other current assets 12 11 Total cash and cash equivalents and restricted cash and cash equivalents $ 104 $ 36
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds representing vendor retention, custodial and nuclear decommissioning funds. Restricted amounts are included in other current assets and other assets on the Consolidated Balance Sheets. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 43 $ 13 Restricted cash included in other current assets 3 4 Restricted cash included in other assets 3 2 Total cash and cash equivalents and restricted cash and cash equivalents $ 49 $ 19
MidAmerican Funding, LLC and Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation and, as of December 31, 2020, the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 38 $ 39 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 45 $ 46
MidAmerican Energy Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation and, as of December 31, 2020, the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 37 $ 38 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 44 $ 45

Recent Financing Transactions

Recent Financing Transactions	3 Months Ended
Recent Financing Transactions	Mar. 31, 2021
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-Term Debt In April 2021, Northern Natural Gas issued $550 million of 3.40% Senior Bonds due October 2051. Northern Natural Gas used the net proceeds to early redeem in April 2021 all of its $200 million, 4.25% Senior Notes originally due June 2021 and for general corporate purposes. Credit Facilities In April 2021, AltaLink Investments, L.P. extended, with lender consent, the expiration date for its existing C$200 million one-year revolving credit facility to April 2022, by exercising a one-year extension option.

Income Taxes

Income Taxes	3 Months Ended
Income Taxes	Mar. 31, 2021
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes The effective income tax rate for the three-month period ended March 31, 2021, is 217% and results from a $535 million income tax benefit associated with a $246 million pre-tax loss, primarily relating to a pre-tax unrealized loss of $1,124 million on the Company's investment in BYD Company Limited. The $535 million income tax benefit is primarily comprised of a $52 million benefit (21%) from the application of the statutory income tax rate to the pre-tax loss, a $334 million benefit (136%) from income tax credits and a $51 million benefit (21%) from state income tax benefits, net of federal income tax impacts. A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Income tax credits 136 (46) State income tax, net of federal income tax impacts 21 — Income tax effect of foreign income 6 (3) Effects of ratemaking 10 (8) Equity income 15 (1) Noncontrolling interest 9 — Other, net (1) 1 Effective income tax rate 217 % (36) % Income tax credits relate primarily to PTCs from wind-powered generating facilities owned by MidAmerican Energy, PacifiCorp and BHE Renewables. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. PTCs for the three-month periods ended March 31, 2021 and 2020 totaled $315 million and $233 million, respectively. The Company's provision for income taxes has been computed on a stand-alone basis. Berkshire Hathaway includes the Company in its consolidated United States federal and Iowa state income tax returns and the majority of the Company's United States federal income tax is remitted to or received from Berkshire Hathaway. The Company made no payments for federal income taxes to Berkshire Hathaway for the three-month period ended March 31, 2021, and made payments for federal income taxes to Berkshire Hathaway totaling $100 million for the three-month period ended March 31, 2020.
PacifiCorp [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % State income tax, net of federal income tax benefit 3 3 Federal income tax credits (20) (11) Effects of ratemaking (13) (22) Other 2 — Effective income tax rate (7) % (9) % Income tax credits relate primarily to production tax credits ("PTCs") earned by PacifiCorp's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. Effects of ratemaking for the three-month periods ended March 31, 2021 and 2020 is primarily attributable to the amortization of excess deferred income taxes, including the use of excess deferred income taxes of $3 million and $30 million, respectively, to accelerate depreciation of certain retired wind equipment and to amortize certain regulatory asset balances in accordance with regulatory orders issued in Oregon and Wyoming. Berkshire Hathaway includes BHE and its subsidiaries in its United States federal income tax return. Consistent with established regulatory practice, PacifiCorp's provision for federal and state income tax has been computed on a stand-alone basis, and substantially all of its currently payable or receivable income tax is remitted to or received from BHE. For the three-month periods ended March 31, 2021 and 2020 , PacifiCorp made net cash payments for federal and state income tax to BHE totaling $1 million and $26 million, respectively.
Sierra Pacific Power Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Effects of ratemaking (10) (8) Other 2 (2) Effective income tax rate 13 % 11 % Effects of ratemaking is primarily attributable to the recognition of excess deferred income taxes related to the 2017 Tax Cuts and Jobs Act pursuant to an order issued by the PUCN effective January 1, 2020.
MidAmerican Energy Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes The effective income tax rate for the three-month period ended March 31, 2021, is 2,200% and results from a $154 million income tax benefit associated with a $7 million pre-tax loss. The $154 million income tax benefit is primarily comprised of a $2 million benefit (21%) from the application of the statutory income tax rate to the pre-tax loss and a $168 million benefit (2,400%) from income tax credits, partially offset by a $13 million expense (186%) from the effects of ratemaking. A reconciliation of the federal statutory income tax rate to MidAmerican Energy's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Income tax credits 2,400 (430) State income tax, net of federal income tax impacts (29) (28) Effects of ratemaking (186) (3) Other, net (6) 1 Effective income tax rate 2,200 % (439) % Income tax credits relate primarily to production tax credits ("PTCs") from MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. MidAmerican Energy recognizes its renewable electricity PTCs throughout the year based on when the credits are earned and excludes them from the annual effective tax rate that is the basis for the interim recognition of other income tax expense. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. PTCs for the three-month periods ended March 31, 2021 and 2020 totaled $151 million and $120 million, respectively.
MidAmerican Funding, LLC and Subsidiaries [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes The effective income tax rate for the three-month period ended March 31, 2021, is 1,300% and results from a $156 million income tax benefit associated with a $12 million pre-tax loss. The $156 million income tax benefit is primarily comprised of a $3 million benefit (21%) from the application of the statutory income tax rate to the pre-tax loss and a $168 million benefit (1,400%) from income tax credits, partially offset by a $13 million expense (108%) from the effects of ratemaking. A reconciliation of the federal statutory income tax rate to MidAmerican Funding's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Income tax credits 1,400 (463) State income tax, net of federal income tax impacts (8) (31) Effects of ratemaking (108) (3) Other, net (5) (1) Effective income tax rate 1,300 % (477) % Income tax credits relate primarily to production tax credits ("PTCs") from MidAmerican Energy's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. MidAmerican Funding recognizes its renewable electricity PTCs throughout the year based on when the credits are earned and excludes them from the annual effective tax rate that is the basis for the interim recognition of other income tax expense. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. PTCs for the three-month periods ended March 31, 2021 and 2020 totaled $151 million and $120 million, respectively. Berkshire Hathaway includes BHE and subsidiaries in its United States federal and Iowa state income tax returns. Consistent with established regulatory practice, MidAmerican Funding's and MidAmerican Energy's provisions for income tax have been computed on a stand-alone basis, and substantially all of their currently payable or receivable income tax is remitted to or received from BHE. The timing of MidAmerican Funding's income tax cash flows from period to period can be significantly affected by the estimated federal income tax payment methods and assumptions for each payment date. MidAmerican Funding made no cash payments for income tax to BHE for the three-month period ended March 31, 2021, and made net cash payments for income tax to BHE totaling $47 million for the three-month period ended March 31, 2020.
Eastern Energy Gas Holdings, LLC [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % State income tax, net of federal income tax benefit 3 3 Equity interest 2 1 Effects of ratemaking (1) (1) Absence of noncontrolling interest (11) (3) Other, net (1) 1 Effective income tax rate 13 % 22 % Absence of tax on noncontrolling interest is attributable to Eastern Energy Gas' ownership in Cove Point. The GT&S Transaction resulted in a change of noncontrolling interest to 75% as of March 31, 2021 from 25% as of March 31, 2020. Through October 31, 2020, Eastern Energy Gas was included in DEI's consolidated federal income tax return and, where applicable, combined state income tax returns. All affiliate payables or receivables were settled with DEI prior to the closing date of the GT&S Transaction. Subsequent to the GT&S Transaction, Eastern Energy Gas, as a subsidiary of BHE, is included in Berkshire Hathaway's United States federal income tax return. Consistent with established regulatory practice, Eastern Energy Gas' provisions for income tax have been computed on a stand-alone basis, and substantially all of its currently payable or receivable income tax is remitted to or received from BHE. Eastern Energy Gas made no cash payments for income tax to BHE for the three-month period ended March 31, 2021.

Employee Benefit Plans

Employee Benefit Plans	3 Months Ended
Employee Benefit Plans	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Domestic Operations Net periodic benefit cost (credit) for the domestic pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ 7 $ 3 Interest cost 20 23 Expected return on plan assets (33) (35) Net amortization 6 9 Net periodic benefit cost $ — $ — Other postretirement: Service cost $ 2 $ 1 Interest cost 5 6 Expected return on plan assets (5) (9) Net amortization (1) (1) Net periodic benefit cost (credit) $ 1 $ (3) Amounts other than the service cost for pension and other postretirement benefit plans are recorded in Other, net in the Consolidated Statements of Operations. Employer contributions to the domestic pension and other postretirement benefit plans are expected to be $13 million and $13 million, respectively, during 2021. As of March 31, 2021, $3 million and $3 million of contributions had been made to the domestic pension and other postretirement benefit plans, respectively. Foreign Operations Net periodic benefit credit for the United Kingdom pension plan included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Service cost $ 4 $ 4 Interest cost 8 10 Expected return on plan assets (28) (25) Net amortization 14 10 Net periodic benefit credit $ (2) $ (1) Amounts other than the service cost for the United Kingdom pension plan are recorded in Other, net in the Consolidated Statements of Operations. Employer contributions to the United Kingdom pension plan are expected to be £50 million during 2021. As of March 31, 2021, £11 million, or $15 million, of contributions had been made to the United Kingdom pension plan.
PacifiCorp [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Net periodic benefit credit for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ — $ — Interest cost 7 9 Expected return on plan assets (13) (14) Net amortization 5 5 Net periodic benefit credit $ (1) $ — Other postretirement: Service cost $ — $ — Interest cost 2 3 Expected return on plan assets (2) (4) Net amortization — — Net periodic benefit credit $ — $ (1)
MidAmerican Energy Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit PlansMidAmerican Energy sponsors a noncontributory defined benefit pension plan covering a majority of all employees of BHE and its domestic energy subsidiaries other than PacifiCorp and NV Energy, Inc. MidAmerican Energy also sponsors certain postretirement healthcare and life insurance benefits covering substantially all retired employees of BHE and its domestic energy subsidiaries other than PacifiCorp and NV Energy, Inc. Net periodic benefit cost (credit) for the plans of MidAmerican Energy and the aforementioned affiliates included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ 5 $ 1 Interest cost 6 6 Expected return on plan assets (9) (10) Net periodic benefit cost (credit) $ 2 $ (3) Other postretirement: Service cost $ 2 $ 1 Interest cost 2 2 Expected return on plan assets (2) (3) Net amortization (1) (1) Net periodic benefit cost (credit) $ 1 $ (1) Amounts other than the service cost for pension and other postretirement benefit plans are recorded in Other, net in the Statements of Operations. Employer contributions to the pension and other postretirement benefit plans are expected to be $7 million and $12 million, respectively, during 2021. As of March 31, 2021, $2 million and $3 million of contributions had been made to the pension and other postretirement benefit plans, respectively.
MidAmerican Funding, LLC and Subsidiaries [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit PlansRefer to Note 6 of MidAmerican Energy's Notes to Financial Statements.
Nevada Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Nevada Power is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Nevada Power. Amounts attributable to Nevada Power were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net. Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of March 31, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 9 $ 8 Non-Qualified Pension Plans: Other current liabilities (1) (1) Other long-term liabilities (9) (9) Other Postretirement Plans: Other non-current assets 4 4
Sierra Pacific Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Sierra Pacific is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Sierra Pacific. Amounts attributable to Sierra Pacific were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net. Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of March 31, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 27 $ 26 Non-Qualified Pension Plans: Other current liabilities (1) (1) Other long-term liabilities (8) (8) Other Postretirement Plans: Other long-term liabilities (14) (13)
Eastern Energy Gas Holdings, LLC [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Prior to the GT&S Transaction, certain Eastern Energy Gas employees not represented by collective bargaining units were covered by the Dominion Energy Pension Plan, a defined benefit pension plan sponsored by DEI that provides benefits to multiple DEI subsidiaries. As participating employers, Eastern Energy Gas was subject to DEI's funding policy, which was to contribute annually an amount that is in accordance with the Employee Retirement Income Security Act of 1974. Also prior to the GT&S Transaction, pension benefits for Eastern Energy Gas employees represented by collective bargaining units were provided by a separate plan that provides benefits to employees of both EGTS and Hope Gas, Inc. ("Hope"). Subsequent to the GT&S Transaction, Eastern Energy Gas employees are covered by the MidAmerican Energy Company ("MidAmerican Energy") Pension Plan, similar to the DEI plan. Prior to the GT&S Transaction, certain retiree healthcare and life insurance benefits for Eastern Energy Gas employees not represented by collective bargaining units were covered by the Dominion Energy Retiree Health and Welfare Plan, a plan sponsored by DEI that provides certain retiree healthcare and life insurance benefits to multiple DEI subsidiaries. Also prior to the GT&S Transaction, retiree health and life insurance benefits for Eastern Energy Gas employees represented by collective bargaining units were covered by a separate other postretirement benefit plan that provides benefits to both EGTS and Hope. Subsequent to the GT&S Transaction, Eastern Energy Gas employees are covered by the MidAmerican Energy Retiree Health and Welfare plan, similar to the DEI plan. Net periodic benefit cost (credit) for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ — $ 1 Interest cost — 3 Expected return on plan assets — (14) Net amortization — 2 Net periodic benefit cost (credit) $ — $ (8) Other Postretirement: Service cost $ — $ 1 Interest cost — 1 Expected return on plan assets — (5) Net amortization — (1) Net periodic benefit cost (credit) $ — $ (4)

Risk Management and Hedging Act

Risk Management and Hedging Activities	3 Months Ended
Risk Management and Hedging Activities	Mar. 31, 2021
PacifiCorp [Member]
Derivative [Line Items]
Risk Management and Hedging Activities	Risk Management and Hedging Activities PacifiCorp is exposed to the impact of market fluctuations in commodity prices and interest rates. PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its service territories. PacifiCorp's load and generating facilities represent substantial underlying commodity positions. Exposures to commodity prices consist mainly of variations in the price of fuel required to generate electricity and wholesale electricity that is purchased and sold. Commodity prices are subject to wide price swings as supply and demand are impacted by, among many other unpredictable items, weather, market liquidity, generating facility availability, customer usage, storage, and transmission and transportation constraints. Interest rate risk exists on variable-rate debt and future debt issuances. PacifiCorp does not engage in a material amount of proprietary trading activities. PacifiCorp has established a risk management process that is designed to identify, manage and report each of the various types of risk involved in its business. To mitigate a portion of its commodity price risk, PacifiCorp uses commodity derivative contracts, which may include forwards, options, swaps and other agreements, to effectively secure future supply or sell future production generally at fixed prices. PacifiCorp manages its interest rate risk by limiting its exposure to variable interest rates primarily through the issuance of fixed-rate long-term debt and by monitoring market changes in interest rates. Additionally, PacifiCorp may from time to time enter into interest rate derivative contracts, such as interest rate swaps or locks, to mitigate PacifiCorp's exposure to interest rate risk. No interest rate derivatives were in place during the periods presented. PacifiCorp does not hedge all of its commodity price and interest rate risks, thereby exposing the unhedged portion to changes in market prices. There have been no significant changes in PacifiCorp's accounting policies related to derivatives. Refer to Note 7 for additional information on derivative contracts. The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of PacifiCorp's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of March 31, 2021 Not designated as hedging contracts (1) : Commodity assets $ 45 $ 6 $ 2 $ — $ 53 Commodity liabilities (2) — (27) (24) (53) Total 43 6 (25) (24) — Total derivatives 43 6 (25) (24) — Cash collateral receivable — — 13 4 17 Total derivatives - net basis $ 43 $ 6 $ (12) $ (20) $ 17 As of December 31, 2020 Not designated as hedging contracts (1) : Commodity assets $ 29 $ 6 $ 1 $ — $ 36 Commodity liabilities (2) — (23) (28) (53) Total 27 6 (22) (28) (17) Total derivatives 27 6 (22) (28) (17) Cash collateral receivable — — 15 9 24 Total derivatives - net basis $ 27 $ 6 $ (7) $ (19) $ 7 (1) PacifiCorp's commodity derivatives are generally included in rates and as of March 31, 2021 and December 31, 2020, a regulatory asset of $— million and $17 million, respectively, was recorded related to the net derivative liability of $— million and $17 million, respectively. The following table reconciles the beginning and ending balances of PacifiCorp's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Ended March 31, 2021 2020 Beginning balance $ 17 $ 62 Changes in fair value (17) 34 Net gains reclassified to operating revenue — 8 Net losses reclassified to cost of fuel and energy — (20) Ending balance $ — $ 84 Derivative Contract Volumes The following table summarizes the net notional amounts of outstanding commodity derivative contracts with fixed price terms that comprise the mark-to-market values as of (in millions): Unit of March 31, December 31, Measure 2021 2020 Electricity sales, net Megawatt hours — (1) Natural gas purchases Decatherms 114 100 Credit Risk PacifiCorp is exposed to counterparty credit risk associated with wholesale energy supply and marketing activities with other utilities, energy marketing companies, financial institutions and other market participants. Credit risk may be concentrated to the extent PacifiCorp's counterparties have similar economic, industry or other characteristics and due to direct or indirect relationships among the counterparties. Before entering into a transaction, PacifiCorp analyzes the financial condition of each significant wholesale counterparty, establishes limits on the amount of unsecured credit to be extended to each counterparty and evaluates the appropriateness of unsecured credit limits on an ongoing basis. To further mitigate wholesale counterparty credit risk, PacifiCorp enters into netting and collateral arrangements that may include margining and cross-product netting agreements and obtains third‑party guarantees, letters of credit and cash deposits. If required, PacifiCorp exercises rights under these arrangements, including calling on the counterparty's credit support arrangement. Collateral and Contingent Features In accordance with industry practice, certain wholesale agreements, including derivative contracts, contain credit support provisions that in part base certain collateral requirements on credit ratings for senior unsecured debt as reported by one or more of the recognized credit rating agencies. These agreements may either specifically provide bilateral rights to demand cash or other security if credit exposures on a net basis exceed specified rating-dependent threshold levels ("credit-risk-related contingent features") or provide the right for counterparties to demand "adequate assurance" if there is a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. As of March 31, 2021, PacifiCorp's credit ratings for its senior secured debt and its issuer credit ratings for senior unsecured debt from the recognized credit rating agencies were investment grade. The aggregate fair value of PacifiCorp's derivative contracts in liability positions with specific credit-risk-related contingent features totaled $52 million and $51 million as of March 31, 2021 and December 31, 2020, respectively, for which PacifiCorp had posted collateral of $17 million and $24 million, respectively, in the form of cash deposits. If all credit-risk-related contingent features for derivative contracts in liability positions had been triggered as of March 31, 2021 and December 31, 2020, PacifiCorp would have been required to post $30 million and $25 million, respectively, of additional collateral. PacifiCorp's collateral requirements could fluctuate considerably due to market price volatility, changes in credit ratings, changes in legislation or regulation or other factors.

Fair Value Measurements

Fair Value Measurements	3 Months Ended
Fair Value Measurements	Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of the Company's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. The Company has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that the Company has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect the Company's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. The Company develops these inputs based on the best information available, including its own data. The following table presents the Company's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of March 31, 2021 Assets: Commodity derivatives $ 1 $ 72 $ 154 $ (18) $ 209 Foreign currency exchange rate derivatives — 12 — — 12 Interest rate derivatives — 33 47 — 80 Mortgage loans held for sale — 2,065 — — 2,065 Money market mutual funds (2) 807 — — — 807 Debt securities: United States government obligations 210 — — — 210 International government obligations — 5 — — 5 Corporate obligations — 71 — — 71 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 395 — — — 395 International companies 4,780 — — — 4,780 Investment funds 256 — — — 256 $ 6,449 $ 2,265 $ 201 $ (18) $ 8,897 Liabilities: Commodity derivatives $ — $ (90) $ (30) $ 39 $ (81) Foreign currency exchange rate derivatives — (1) — — (1) Interest rate derivatives (3) (14) (6) — (23) $ (3) $ (105) $ (36) $ 39 $ (105) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2020 Assets: Commodity derivatives $ 1 $ 73 $ 135 $ (21) $ 188 Foreign currency exchange rate derivatives — 20 — — 20 Interest rate derivatives — — 62 — 62 Mortgage loans held for sale — 2,001 — — 2,001 Money market mutual funds (2) 873 — — — 873 Debt securities: United States government obligations 200 — — — 200 International government obligations — 5 — — 5 Corporate obligations — 73 — — 73 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 6 — — 6 Equity securities: United States companies 381 — — — 381 International companies 5,906 — — — 5,906 Investment funds 201 — — — 201 $ 7,562 $ 2,180 $ 197 $ (21) $ 9,918 Liabilities: Commodity derivatives $ (1) $ (90) $ (19) $ 56 $ (54) Foreign currency exchange rate derivatives — (2) — — (2) Interest rate derivatives (5) (60) — — (65) $ (6) $ (152) $ (19) $ 56 $ (121) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $21 million and $35 million as of March 31, 2021 and December 31, 2020, respectively. (2) Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which the Company transacts. When quoted prices for identical contracts are not available, the Company uses forward price curves. Forward price curves represent the Company's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. The Company bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by the Company. Market price quotations are generally readily obtainable for the applicable term of the Company's outstanding derivative contracts; therefore, the Company's forward price curves reflect observable market quotes. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to the length of the contract. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, the Company uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. The Company's mortgage loans held for sale are valued based on independent quoted market prices, where available, or the prices of other mortgage whole loans with similar characteristics. As necessary, these prices are adjusted for typical securitization activities, including servicing value, portfolio composition, market conditions and liquidity. The Company's investments in money market mutual funds and debt and equity securities are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. The following table reconciles the beginning and ending balances of the Company's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Ended March 31, Interest Commodity Rate Derivatives Derivatives 2021: Beginning balance $ 116 $ 62 Changes included in earnings (1) (6) (21) Changes in fair value recognized in OCI (1) — Changes in fair value recognized in net regulatory assets 16 — Settlements (1) — Ending balance $ 124 $ 41 2020: Beginning balance $ 97 $ 14 Changes included in earnings (1) (3) 31 Changes in fair value recognized in net regulatory assets (40) — Purchases 2 — Settlements (4) — Ending balance $ 52 $ 45 (1) Changes included in earnings for interest rate derivatives are reported net of amounts related to the satisfaction of the associated loan commitment. The Company's long-term debt is carried at cost, including fair value adjustments and unamortized premiums, discounts and debt issuance costs as applicable, on the Consolidated Balance Sheets. The fair value of the Company's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of the Company's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of the Company's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 49,461 $ 55,926 $ 49,866 $ 60,633
PacifiCorp [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of PacifiCorp's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. PacifiCorp has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that PacifiCorp has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect PacifiCorp's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. PacifiCorp develops these inputs based on the best information available, including its own data. The following table presents PacifiCorp's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of March 31, 2021 Assets: Commodity derivatives $ — $ 53 $ — $ (4) $ 49 Money market mutual funds (2) 36 — — — 36 Investment funds 30 — — — 30 $ 66 $ 53 $ — $ (4) $ 115 Liabilities - Commodity derivatives $ — $ (53) $ — $ 21 $ (32) As of December 31, 2020 Assets: Commodity derivatives $ — $ 36 $ — $ (3) $ 33 Money market mutual funds (2) 6 — — — 6 Investment funds 25 — — — 25 $ 31 $ 36 $ — $ (3) $ 64 Liabilities - Commodity derivatives $ — $ (53) $ — $ 27 $ (26) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $17 million and $24 million as of March 31, 2021 and December 31, 2020, respectively. (2) Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which PacifiCorp transacts. When quoted prices for identical contracts are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainable for the first three years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable for the first three years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. Refer to Note 6 for further discussion regarding PacifiCorp's risk management and hedging activities. PacifiCorp's investments in money market mutual funds and investment funds are stated at fair value. When available, PacifiCorp uses a readily observable quoted market price or net asset value of an identical security in an active market to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. PacifiCorp's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of PacifiCorp's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of PacifiCorp's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of PacifiCorp's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 8,613 $ 10,198 $ 8,612 $ 10,995
MidAmerican Energy Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of MidAmerican Energy's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. MidAmerican Energy has various financial assets and liabilities that are measured at fair value on the Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that MidAmerican Energy has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect MidAmerican Energy's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. MidAmerican Energy develops these inputs based on the best information available, including its own data. The following table presents MidAmerican Energy's financial assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of March 31, 2021: Assets: Commodity derivatives $ — $ 3 $ 2 $ (2) $ 3 Money market mutual funds (2) 38 — — — 38 Debt securities: United States government obligations 210 — — — 210 International government obligations — 5 — — 5 Corporate obligations — 71 — — 71 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 395 — — — 395 International companies 8 — — — 8 Investment funds 24 — — — 24 $ 675 $ 86 $ 2 $ (2) $ 761 Liabilities - commodity derivatives $ — $ (1) $ (1) $ 2 $ — Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2020: Assets: Commodity derivatives $ — $ 4 $ 5 $ (5) $ 4 Money market mutual funds (2) 41 — — — 41 Debt securities: United States government obligations 200 — — — 200 International government obligations — 5 — — 5 Corporate obligations — 73 — — 73 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 6 — — 6 Equity securities: United States companies 381 — — — 381 International companies 9 — — — 9 Investment funds 17 — — — 17 $ 648 $ 90 $ 5 $ (5) $ 738 Liabilities - commodity derivatives $ — $ (4) $ (3) $ 5 $ (2) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $— million as of March 31, 2021 and December 31, 2020, respectively. (2) Amounts are included in cash and cash equivalents and investments and restricted investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost. MidAmerican Energy's investments in money market mutual funds and debt and equity securities are stated at fair value, with debt securities accounted for as available-for-sale securities. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. MidAmerican Energy's long-term debt is carried at cost on the Balance Sheets. The fair value of MidAmerican Energy's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Energy's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Energy's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,224 $ 8,305 $ 7,210 $ 9,130
MidAmerican Funding, LLC and Subsidiaries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements Refer to Note 7 of MidAmerican Energy's Notes to Financial Statements. MidAmerican Funding's long-term debt is carried at cost on the Consolidated Financial Statements. The fair value of MidAmerican Funding's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Funding's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Funding's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,464 $ 8,622 $ 7,450 $ 9,466
Nevada Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of Nevada Power's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Nevada Power has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Nevada Power has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect Nevada Power's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Nevada Power develops these inputs based on the best information available, including its own data. The following table presents Nevada Power's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of March 31, 2021 Assets: Commodity derivatives $ — $ — $ 48 $ 48 Money market mutual funds (1) 86 — — 86 Investment funds 2 — — 2 $ 88 $ — $ 48 $ 136 Liabilities - commodity derivatives $ — $ — $ (21) $ (21) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 26 $ 26 Money market mutual funds (1) 21 — — 21 Investment funds 2 — — 2 $ 23 $ — $ 26 $ 49 Liabilities - commodity derivatives $ — $ — $ (11) $ (11) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Nevada Power transacts. When quoted prices for identical contracts are not available, Nevada Power uses forward price curves. Forward price curves represent Nevada Power's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Nevada Power bases its forward price curves upon internally developed models, with internal and external fundamental data inputs. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to markets that are not active. Given that limited market data exists for these contracts, Nevada Power uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The model incorporates a mid-market pricing convention (the mid‑point price between bid and ask prices) as a practical expedient for valuing its assets and liabilities measured and reported at fair value. The determination of the fair value for derivative contracts not only includes counterparty risk, but also the impact of Nevada Power's nonperformance risk on its liabilities, which as of March 31, 2021 and December 31, 2020, had an immaterial impact to the fair value of its derivative contracts. As such, Nevada Power considers its derivative contracts to be valued using Level 3 inputs. Nevada Power's investments in money market mutual funds and investment funds are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. The following table reconciles the beginning and ending balances of Nevada Power's commodity derivative assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Ended March 31, 2021 2020 Beginning balance $ 15 $ (8) Changes in fair value recognized in regulatory assets 11 (31) Settlements 1 1 Ending balance $ 27 $ (38) Nevada Power's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of Nevada Power's long‑term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Nevada Power's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Nevada Power's long‑term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,497 $ 2,991 $ 2,496 $ 3,245
Sierra Pacific Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of Sierra Pacific's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Sierra Pacific has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Sierra Pacific has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect Sierra Pacific's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Sierra Pacific develops these inputs based on the best information available, including its own data. The following table presents Sierra Pacific's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of March 31, 2021 Assets: Commodity derivatives $ — $ — $ 16 $ 16 Money market mutual funds (1) 5 — — 5 $ 5 $ — $ 16 $ 21 Liabilities - commodity derivatives $ — $ — $ (4) $ (4) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 9 $ 9 Money market mutual funds (1) 17 — — 17 $ 17 $ — $ 9 $ 26 Liabilities - commodity derivatives $ — $ — $ (2) $ (2) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Sierra Pacific's investments in money market mutual funds and investment funds are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. Sierra Pacific's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of Sierra Pacific's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Sierra Pacific's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Sierra Pacific's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,164 $ 1,312 $ 1,164 $ 1,358
Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of Eastern Energy Gas' cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Eastern Energy Gas has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 - Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Eastern Energy Gas has the ability to access at the measurement date. • Level 2 - Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 - Unobservable inputs reflect Eastern Energy Gas' judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Eastern Energy Gas develops these inputs based on the best information available, including its own data. The following table presents Eastern Energy Gas' financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of March 31, 2021 Assets: Foreign currency exchange rate derivatives $ — $ 12 $ — $ 12 Money market mutual funds (1) 71 — — 71 Investment funds 12 — — 12 $ 83 $ 12 $ — $ 95 Liabilities: Foreign currency exchange rate derivatives $ — $ (1) $ — $ (1) Interest rate derivatives — (3) — (3) $ — $ (4) $ — $ (4) As of December 31, 2020 Assets: Foreign currency exchange rate derivatives $ — $ 20 $ — $ 20 $ — $ 20 $ — $ 20 Liabilities: Commodity derivatives $ — $ (1) $ — $ (1) Foreign currency exchange rate derivatives — (2) — (2) Interest rate derivatives — (6) — (6) $ — $ (9) $ — $ (9) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchase or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Eastern Energy Gas transacts. When quoted prices for identical contracts are not available, Eastern Energy Gas uses forward price curves. Forward price curves represent Eastern Energy Gas' estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Eastern Energy Gas bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by Eastern Energy Gas. Market price quotations are generally readily obtainable for the applicable term of Eastern Energy Gas' outstanding derivative contracts; therefore, Eastern Energy Gas' forward price curves reflect observable market quotes. Market price quotations for certain natural gas trading hubs are not as readily obtainable due to the length of the contracts. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, Eastern Energy Gas uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. Eastern Energy Gas' long-term debt is carried at cost, including unamortized premiums, discounts and debt issuance costs as applicable, on the Consolidated Balance Sheets. The fair value of Eastern Energy Gas' long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of Eastern Energy Gas' variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of Eastern Energy Gas' long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 4,414 $ 4,744 $ 4,425 $ 5,012

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
Commitments and Contingencies	Mar. 31, 2021
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters The Company is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. The Company does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. The Company is also involved in other kinds of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts and are described below. California and Oregon 2020 Wildfires In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and Northern California. The wildfires spread across certain parts of PacifiCorp's service territory and surrounding areas across multiple counties in Oregon and California, including Siskiyou County, California; Jackson County, Oregon; Douglas County, Oregon; Marion County, Oregon; Lincoln County, Oregon; and Klamath County, Oregon burning over 500,000 acres in aggregate. Third party reports for these wildfires indicate over 2,000 structures, including residences, destroyed; several structures damaged; multiple individuals injured; and several fatalities. Fire suppression costs estimated by various agencies total approximately $150 million. Investigations into the cause and origin of each wildfire are complex and ongoing and being conducted by various entities, including the United States Forest Service, the California Public Utilities Commission, the Oregon Department of Forestry, the Oregon Department of Justice, PacifiCorp and various experts engaged by PacifiCorp. Several lawsuits have been filed in Oregon and California, including a putative class action complaint in Oregon, on behalf of citizens and businesses who suffered damages from fires allegedly caused by PacifiCorp. The final determinations of liability, however, will only be made following comprehensive investigations and litigation processes. In California, under inverse condemnation, courts have held that investor-owned utilities can be liable for real and personal property damages without the utility being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover reasonable attorney fees and costs. In both Oregon and California, PacifiCorp has equipment in areas accessed through special use permits, easements or similar agreements that may contain provisions requiring it to pay for damages caused by its equipment regardless of fault. Even if inverse condemnation or other provisions do not apply, PacifiCorp could nevertheless be found liable for all damages proximately caused by negligence, including property and natural resource damage; fire suppression costs; personal injury and loss of life damages; and interest. As of March 31, 2021, PacifiCorp has accrued $136 million as its best estimate of the potential losses net of expected insurance recoveries associated with the 2020 Wildfires that are considered probable of being incurred. These accruals include estimated losses for fire suppression costs, property damage, personal injury damages and loss of life damages. It is reasonably possible that PacifiCorp will incur additional losses beyond the amounts accrued; however, PacifiCorp is currently unable to estimate the range of possible additional losses that could be incurred due to the number of properties and parties involved and the lack of specific claims for all potential claimants. To the extent losses beyond the amounts accrued are incurred, additional insurance coverage is expected to be available to cover at least a portion of the losses. Environmental Laws and Regulations The Company is subject to federal, state, local and foreign laws and regulations regarding climate change, renewable portfolio standards, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact the Company's current and future operations. The Company believes it is in material compliance with all applicable laws and regulations. Hydroelectric Relicensing PacifiCorp is a party to the 2016 amended Klamath Hydroelectric Settlement Agreement ("KHSA"), which is intended to resolve disputes surrounding PacifiCorp's efforts to relicense the Klamath Hydroelectric Project. The KHSA establishes a process for PacifiCorp, the states of Oregon and California ("States") and other stakeholders to assess whether dam removal can occur consistent with the settlement's terms. For PacifiCorp, the key elements of the settlement include: (1) a contribution from PacifiCorp's Oregon and California customers capped at $200 million plus $250 million in California bond funds; (2) complete indemnification from harms associated with dam removal; (3) transfer of the FERC license to a third-party dam removal entity, the Klamath River Renewal Corporation ("KRRC"), who would conduct dam removal; and (4) ability for PacifiCorp to operate the facilities for the benefit of customers until dam removal commences. In September 2016, the KRRC and PacifiCorp filed a joint application with the FERC to transfer the license for the four mainstem Klamath dams from PacifiCorp to the KRRC. The FERC approved partial transfer of the Klamath license in a July 2020 order, subject to the condition that PacifiCorp remains co-licensee. Under the amended KHSA, PacifiCorp did not agree to remain co-licensee during the surrender and removal process given concerns about liability protections for PacifiCorp and its customers. In November 2020, PacifiCorp entered a memorandum of agreement (the "MOA") with the KRRC, the Karuk Tribe, the Yurok Tribe and the States to continue implementation of the KHSA. The agreement required the States, PacifiCorp and KRRC to file a new license transfer application by January 16, 2021 to remove PacifiCorp from the license for the Klamath Hydroelectric Project and add the States and KRRC as co-licensees for the purposes of surrender. On January 13, 2021, the new license transfer application was filed with the FERC, notifying it that PacifiCorp and the KRRC are not accepting co-licensee status under FERC's July 2020 order, and instead are seeking the license transfer outcome described in the new license transfer application. In addition, the MOA provides for additional contingency funding of $45 million, equally split between PacifiCorp and the States, and for PacifiCorp and the States to equally share in any additional cost overruns in the unlikely event that dam removal costs exceed the $450 million in funding to ensure dam removal is complete. The MOA also requires PacifiCorp to cover the costs associated with certain pre-existing environmental conditions. Guarantees
PacifiCorp [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters PacifiCorp is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. PacifiCorp does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. PacifiCorp is also involved in other kinds of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts and are described below. California and Oregon 2020 Wildfires In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and Northern California. The wildfires spread across certain parts of PacifiCorp's service territory and surrounding areas across multiple counties in Oregon and California, including Siskiyou County, California; Jackson County, Oregon; Douglas County, Oregon; Marion County, Oregon; Lincoln County, Oregon; and Klamath County, Oregon burning over 500,000 acres in aggregate. Third party reports for these wildfires indicate over 2,000 structures, including residences, destroyed; several structures damaged; multiple individuals injured; and several fatalities. Fire suppression costs estimated by various agencies total approximately $150 million. Investigations into the cause and origin of each wildfire are complex and ongoing and being conducted by various entities, including the United States Forest Service, the California Public Utilities Commission, the Oregon Department of Forestry, the Oregon Department of Justice, PacifiCorp and various experts engaged by PacifiCorp. Several lawsuits have been filed in Oregon and California, including a putative class action complaint in Oregon, on behalf of citizens and businesses who suffered damages from fires allegedly caused by PacifiCorp. The final determinations of liability, however, will only be made following comprehensive investigations and litigation processes. In California, under inverse condemnation, courts have held that investor-owned utilities can be liable for real and personal property damages without the utility being found negligent and regardless of fault. California law also permits inverse condemnation plaintiffs to recover reasonable attorney fees and costs. In both Oregon and California, PacifiCorp has equipment in areas accessed through special use permits, easements or similar agreements that may contain provisions requiring it to pay for damages caused by its equipment regardless of fault. Even if inverse condemnation or other provisions do not apply, PacifiCorp could nevertheless be found liable for all damages proximately caused by negligence, including property and natural resource damage; fire suppression costs; personal injury and loss of life damages; and interest. As of March 31, 2021, PacifiCorp has accrued $136 million as its best estimate of the potential losses net of expected insurance recoveries associated with the 2020 Wildfires that are considered probable of being incurred. These accruals include estimated losses for fire suppression costs, property damage, personal injury damages and loss of life damages. It is reasonably possible that PacifiCorp will incur additional losses beyond the amounts accrued; however, PacifiCorp is currently unable to estimate the range of possible additional losses that could be incurred due to the number of properties and parties involved and the lack of specific claims for all potential claimants. To the extent losses beyond the amounts accrued are incurred, additional insurance coverage is expected to be available to cover at least a portion of the losses. Environmental Laws and Regulations PacifiCorp is subject to federal, state and local laws and regulations regarding air and water quality, renewable portfolio standards, emissions performance standards, climate change, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact PacifiCorp's current and future operations. PacifiCorp believes it is in material compliance with all applicable laws and regulations. Hydroelectric Relicensing PacifiCorp is a party to the 2016 amended Klamath Hydroelectric Settlement Agreement ("KHSA"), which is intended to resolve disputes surrounding PacifiCorp's efforts to relicense the Klamath Hydroelectric Project. The KHSA establishes a process for PacifiCorp, the states of Oregon and California ("States") and other stakeholders to assess whether dam removal can occur consistent with the settlement's terms. For PacifiCorp, the key elements of the settlement include: (1) a contribution from PacifiCorp's Oregon and California customers capped at $200 million plus $250 million in California bond funds; (2) complete indemnification from harms associated with dam removal; (3) transfer of the Federal Energy Regulatory Commission ("FERC") license to a third-party dam removal entity, the Klamath River Renewal Corporation ("KRRC"), who would conduct dam removal; and (4) ability for PacifiCorp to operate the facilities for the benefit of customers until dam removal commences. In September 2016, the KRRC and PacifiCorp filed a joint application with the FERC to transfer the license for the four mainstem Klamath dams from PacifiCorp to the KRRC. The FERC approved partial transfer of the Klamath license in a July 2020 order, subject to the condition that PacifiCorp remains co-licensee. Under the amended KHSA, PacifiCorp did not agree to remain co-licensee during the surrender and removal process given concerns about liability protections for PacifiCorp and its customers. In November 2020, PacifiCorp entered a memorandum of agreement (the "MOA") with the KRRC, the Karuk Tribe, the Yurok Tribe and the States to continue implementation of the KHSA. The agreement required the States, PacifiCorp and KRRC to file a new license transfer application by January 16, 2021 to remove PacifiCorp from the license for the Klamath Hydroelectric Project and add the States and KRRC as co-licensees for the purposes of surrender. On January 13, 2021, the new license transfer application was filed with the FERC, notifying it that PacifiCorp and the KRRC are not accepting co-licensee status under FERC's July 2020 order, and instead are seeking the license transfer outcome described in the new license transfer application. In addition, the MOA provides for additional contingency funding of $45 million, equally split between PacifiCorp and the States, and for PacifiCorp and the States to equally share in any additional cost overruns in the unlikely event that dam removal costs exceed the $450 million in funding to ensure dam removal is complete. The MOA also requires PacifiCorp to cover the costs associated with certain pre-existing environmental conditions. Guarantees PacifiCorp has entered into guarantees as part of the normal course of business and the sale of certain assets. These guarantees are not expected to have a material impact on PacifiCorp's consolidated financial results.
MidAmerican Energy Company [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters MidAmerican Energy is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MidAmerican Energy does not believe that such normal and routine litigation will have a material impact on its financial results. Environmental Laws and Regulations MidAmerican Energy is subject to federal, state and local laws and regulations regarding climate change, renewable portfolio standards, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. MidAmerican Energy believes it is in material compliance with all applicable laws and regulations. Transmission Rates
MidAmerican Funding, LLC and Subsidiaries [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and ContingenciesMidAmerican Funding is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MidAmerican Funding does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Refer to Note 8 of MidAmerican Energy's Notes to Financial Statements.
Nevada Power Company [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters Nevada Power is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Nevada Power does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Environmental Laws and Regulations Nevada Power is subject to federal, state and local laws and regulations regarding climate change, renewable portfolio standards, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Nevada Power's current and future operations. Nevada Power believes it is in material compliance with all applicable laws and regulations.
Sierra Pacific Power Company [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters Sierra Pacific is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Sierra Pacific does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Environmental Laws and Regulations Sierra Pacific is subject to federal, state and local laws and regulations regarding climate change, renewable portfolio standards, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Sierra Pacific's current and future operations. Sierra Pacific believes it is in material compliance with all applicable laws and regulations.
Eastern Energy Gas Holdings, LLC [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters Eastern Energy Gas is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Eastern Energy Gas does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Environmental Laws and Regulations Eastern Energy Gas is subject to federal, state and local laws and regulations regarding climate change, air and water quality, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact its current and future operations. Eastern Energy Gas believes it is in material compliance with all applicable laws and regulations.

Revenue from Contracts with Cus

Revenue from Contracts with Customers	3 Months Ended
Revenue from Contracts with Customers	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with Customers Energy Products and Services The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the Company's reportable segment information included in Note 13 (in millions): For the Three-Month Period Ended March 31, 2021 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 1,145 $ 452 $ 511 $ — $ — $ — $ — $ — $ 2,108 Retail gas — 460 38 — — — — — 498 Wholesale 36 125 15 — 17 — — — 193 Transmission and 25 15 21 263 — 172 — — 496 Interstate pipeline — — — — 815 — — (41) 774 Other 23 — — — 2 — — — 25 Total Regulated 1,229 1,052 585 263 834 172 — (41) 4,094 Nonregulated — 10 — 10 237 8 166 187 618 Total Customer Revenue 1,229 1,062 585 273 1,071 180 166 146 4,712 Other revenue 13 5 6 27 22 — 24 40 137 Total $ 1,242 $ 1,067 $ 591 $ 300 $ 1,093 $ 180 $ 190 $ 186 $ 4,849 For the Three-Month Period Ended March 31, 2020 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 1,122 $ 410 $ 529 $ — $ — $ — $ — $ — $ 2,061 Retail gas — 187 47 — — — — — 234 Wholesale — 64 14 — — — — (1) 77 Transmission and 22 15 23 233 — 169 — — 462 Interstate pipeline — — — — 400 — — (48) 352 Other 26 — 1 — — — — — 27 Total Regulated 1,170 676 614 233 400 169 — (49) 3,213 Nonregulated — 6 1 7 — 3 159 127 303 Total Customer Revenue 1,170 682 615 240 400 172 159 78 3,516 Other revenue 36 4 7 26 1 — 19 25 118 Total $ 1,206 $ 686 $ 622 $ 266 $ 401 $ 172 $ 178 $ 103 $ 3,634 (1) The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations. Real Estate Services The following table summarizes the Company's real estate services Customer Revenue by line of business (in millions): HomeServices Three-Month Periods Ended March 31, 2021 2020 Customer Revenue: Brokerage $ 1,022 $ 777 Franchise 18 16 Total Customer Revenue 1,040 793 Mortgage and other revenue 192 100 Total $ 1,232 $ 893 Remaining Performance Obligations The following table summarizes the Company's revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of March 31, 2021, by reportable segment (in millions): Performance obligations expected to be satisfied: Less than 12 months More than 12 months Total BHE Pipeline Group $ 2,521 $ 20,918 $ 23,439 BHE Transmission 513 — 513 Total $ 3,034 $ 20,918 $ 23,952
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table summarizes PacifiCorp's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Ended March 31, 2021 2020 Customer Revenue: Retail: Residential $ 483 $ 460 Commercial 359 358 Industrial 271 277 Other retail 32 27 Total retail 1,145 1,122 Wholesale (1) 36 — Transmission 25 22 Other Customer Revenue 23 26 Total Customer Revenue 1,229 1,170 Other revenue 13 36 Total operating revenue $ 1,242 $ 1,206 (1) Includes net payments to counterparties for the financial settlement of certain non-derivative forward contracts for energy sales.
MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table summarizes MidAmerican Energy's revenue from contracts with customers ("Customer Revenue") by line of business and customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 10, (in millions): For the Three-Month Period Ended March 31, 2021 Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 161 $ 308 $ — $ 469 Commercial 71 129 — 200 Industrial 190 12 — 202 Natural gas transportation services — 10 — 10 Other retail (1) 30 1 — 31 Total retail 452 460 — 912 Wholesale 74 51 — 125 Multi-value transmission projects 15 — — 15 Other Customer Revenue — — 10 10 Total Customer Revenue 541 511 10 1,062 Other revenue 4 1 — 5 Total operating revenue $ 545 $ 512 $ 10 $ 1,067 For the Three-Month Period Ended March 31, 2020 Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 148 $ 128 $ — $ 276 Commercial 70 43 — 113 Industrial 163 4 — 167 Natural gas transportation services — 11 — 11 Other retail (1) 29 — — 29 Total retail 410 186 — 596 Wholesale 42 22 — 64 Multi-value transmission projects 16 — — 16 Other Customer Revenue — — 1 1 Total Customer Revenue 468 208 1 677 Other revenue 3 1 — 4 Total operating revenue $ 471 $ 209 $ 1 $ 681 (1) Other retail includes provisions for rate refunds, for which any actual refunds will be reflected in the applicable customer classes upon resolution of the related regulatory proceeding.
MidAmerican Funding, LLC and Subsidiaries [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with CustomersRefer to Note 9 of MidAmerican Energy's Notes to Financial Statements. Additionally, MidAmerican Funding had other Accounting Standards Codification Topic 606 revenue of $— million and $5 million for the three-month periods ended March 31, 2021 and 2020, respectively.
Nevada Power Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table summarizes Nevada Power's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Ended March 31, 2021 2020 Customer Revenue: Retail: Residential $ 196 $ 193 Commercial 84 94 Industrial 63 70 Other 3 3 Total fully bundled 346 360 Distribution only service 5 7 Total retail 351 367 Wholesale, transmission and other 14 16 Total Customer Revenue 365 383 Other revenue 5 6 Total revenue $ 370 $ 389
Sierra Pacific Power Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 9 (in millions): Three-Month Periods Ended March 31, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 71 $ 25 $ 96 $ 69 $ 30 $ 99 Commercial 54 10 64 57 13 70 Industrial 39 3 42 41 4 45 Other 1 — 1 1 — 1 Total fully bundled 165 38 203 168 47 215 Distribution only service 1 — 1 1 — 1 Total retail 166 38 204 169 47 216 Wholesale, transmission and other 15 — 15 14 — 14 Total Customer Revenue 181 38 219 183 47 230 Other revenue — 1 1 1 1 2 Total revenue $ 181 $ 39 $ 220 $ 184 $ 48 $ 232
Eastern Energy Gas Holdings, LLC [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table summarizes Eastern Energy Gas' energy products and services revenue by regulated and nonregulated (in millions): Three-Month Periods Ended March 31, 2021 2020 Customer Revenue: Regulated: Gas transportation and storage $ 279 $ 344 Wholesale 17 2 Other — 1 Total regulated 296 347 Nonregulated 190 208 Total Customer Revenue 486 555 Other revenue — 1 Total operating revenue $ 486 $ 556 Remaining Performance Obligations The following table summarizes Eastern Energy Gas' revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of March 31, 2021 (in millions): Performance obligations expected to be satisfied Less than 12 months More than 12 months Total Eastern Energy Gas $ 1,564 $ 16,115 $ 17,679

BHE Shareholders' Equity (Notes

BHE Shareholders' Equity (Notes)	3 Months Ended
BHE Shareholders' Equity (Notes)	Mar. 31, 2021
Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	BHE Shareholders' Equity For the three-month period ended March 31, 2020, BHE repurchased 180,358 shares of its common stock for $126 million.

Components of Accumulated Other

Components of Accumulated Other Comprehensive Loss, Net	3 Months Ended
Components of Accumulated Other Comprehensive Loss, Net	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Income (Loss), Net	Components of Other Comprehensive Income (Loss), Net The following table shows the change in accumulated other comprehensive income (loss) attributable to BHE shareholders by each component of other comprehensive income (loss), net of applicable income tax (in millions): Unrecognized Foreign Unrealized AOCI Amounts on Currency (Losses) Gains Attributable Retirement Translation on Cash To BHE Benefits Adjustment Flow Hedges Shareholders, Net Balance, December 31, 2019 $ (417) $ (1,296) $ 7 $ (1,706) Other comprehensive income (loss) 34 (548) (33) (547) Balance, March 31, 2020 $ (383) $ (1,844) $ (26) $ (2,253) Balance, December 31, 2020 $ (482) $ (1,062) $ (8) $ (1,552) Other comprehensive income 7 91 14 112 Balance, March 31, 2021 $ (475) $ (971) $ 6 $ (1,440)
Eastern Energy Gas Holdings, LLC [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Income (Loss), Net	Components of Accumulated Other Comprehensive Loss, Net The following table shows the change in accumulated other comprehensive loss by each component of other comprehensive income (loss), net of applicable income tax (in millions): Unrecognized Accumulated Amounts On Unrealized Other Retirement Losses on Cash Noncontrolling Comprehensive Benefits Flow Hedges Interests Loss, Net Balance, December 31, 2019 $ (106) $ (81) $ — $ (187) Other comprehensive income (loss) 1 (85) — (84) Balance, March 31, 2020 $ (105) $ (166) $ — $ (271) Balance, December 31, 2020 $ (12) $ (51) $ 10 $ (53) Other comprehensive income (loss) 2 10 (4) 8 Balance, March 31, 2021 $ (10) $ (41) $ 6 $ (45)

Segment Information

Segment Information	3 Months Ended
Segment Information	Mar. 31, 2021
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [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. Information related to the Company's reportable segments is shown below (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: PacifiCorp $ 1,242 $ 1,206 MidAmerican Funding 1,067 686 NV Energy 591 622 Northern Powergrid 300 266 BHE Pipeline Group 1,093 401 BHE Transmission 180 172 BHE Renewables 190 178 HomeServices 1,232 893 BHE and Other (1) 186 103 Total operating revenue $ 6,081 $ 4,527 Depreciation and amortization: PacifiCorp $ 264 $ 252 MidAmerican Funding 207 176 NV Energy 136 124 Northern Powergrid 71 63 BHE Pipeline Group 118 64 BHE Transmission 58 60 BHE Renewables 60 71 HomeServices 11 11 BHE and Other (1) 2 — Total depreciation and amortization $ 927 $ 821 Three-Month Periods Ended March 31, 2021 2020 Operating income: PacifiCorp $ 234 $ 234 MidAmerican Funding 48 102 NV Energy 70 79 Northern Powergrid 151 132 BHE Pipeline Group 618 249 BHE Transmission 81 76 BHE Renewables 33 17 HomeServices 112 20 BHE and Other (1) (14) 10 Total operating income 1,333 919 Interest expense (530) (483) Capitalized interest 14 17 Allowance for equity funds 26 34 Interest and dividend income 21 20 (Losses) gains on marketable securities, net (1,118) 27 Other, net 8 (27) Total (loss) income before income tax benefit and equity loss $ (246) $ 507 Interest expense: PacifiCorp $ 107 $ 102 MidAmerican Funding 78 81 NV Energy 52 58 Northern Powergrid 33 32 BHE Pipeline Group 38 14 BHE Transmission 38 38 BHE Renewables 40 42 HomeServices 1 5 BHE and Other (1) 143 111 Total interest expense $ 530 $ 483 (Loss) earnings on common shares: PacifiCorp $ 169 $ 176 MidAmerican Funding 144 150 NV Energy 34 20 Northern Powergrid 104 87 BHE Pipeline Group 383 179 BHE Transmission 59 55 BHE Renewables 16 95 HomeServices 84 10 BHE and Other (1,027) (102) (Loss) earnings on common shares $ (34) $ 670 As of March 31, December 31, 2021 2020 Assets: PacifiCorp $ 26,956 $ 26,862 MidAmerican Funding 24,098 23,530 NV Energy 14,594 14,501 Northern Powergrid 8,980 8,782 BHE Pipeline Group 19,651 19,541 BHE Transmission 9,341 9,208 BHE Renewables 11,935 12,004 HomeServices 5,186 4,955 BHE and Other (1) 6,781 7,933 Total assets $ 127,522 $ 127,316 (1) The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations. Three-Month Periods Ended March 31, 2021 2020 Operating revenue by country: United States $ 5,597 $ 4,089 United Kingdom 300 266 Canada 177 171 Philippines and other 7 1 Total operating revenue by country $ 6,081 $ 4,527 (Loss) income before income tax benefit and equity loss by country: United States $ (423) $ 354 United Kingdom 132 109 Canada 39 40 Philippines and other 6 4 Total (loss) income before income tax benefit and equity loss by country $ (246) $ 507 The following table shows the change in the carrying amount of goodwill by reportable segment for the three-month period ended March 31, 2021 (in millions): BHE Pipeline Group PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Transmission BHE Renewables HomeServices Total December 31, 2020 $ 1,129 $ 2,102 $ 2,369 $ 1,000 $ 1,803 $ 1,551 $ 95 $ 1,457 $ 11,506 Acquisitions — — — — — — — 1 1 Foreign currency translation — — — 6 — 21 — — 27 March 31, 2021 $ 1,129 $ 2,102 $ 2,369 $ 1,006 $ 1,803 $ 1,572 $ 95 $ 1,458 $ 11,534
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Segment Information MidAmerican Energy has identified two reportable 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 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. The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: Regulated electric $ 545 $ 471 Regulated natural gas 512 209 Other 10 1 Total operating revenue $ 1,067 $ 681 Operating income: Regulated electric $ 9 $ 59 Regulated natural gas 39 39 Total operating income 48 98 Interest expense (74) (76) Allowance for borrowed funds 2 3 Allowance for equity funds 6 8 Other, net 11 (5) (Loss) income before income tax benefit $ (7) $ 28 As of March 31, December 31, Assets: Regulated electric $ 20,272 $ 19,892 Regulated natural gas 1,725 1,544 Other 3 1 Total assets $ 22,000 $ 21,437
MidAmerican Funding, LLC and Subsidiaries [Member]
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Segment Information MidAmerican Funding has identified two reportable 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 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 financial results and assets of nonregulated operations, MHC and MidAmerican Funding. The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: Regulated electric $ 545 $ 471 Regulated natural gas 512 209 Other 10 6 Total operating revenue $ 1,067 $ 686 Operating income: Regulated electric $ 9 $ 59 Regulated natural gas 39 39 Other — 4 Total operating income 48 102 Interest expense (78) (81) Allowance for borrowed funds 2 3 Allowance for equity funds 6 8 Other, net 10 (6) (Loss) income before income tax benefit $ (12) $ 26 As of March 31, December 31, Assets (1) : Regulated electric $ 21,463 $ 21,083 Regulated natural gas 1,804 1,623 Other 7 5 Total assets $ 23,274 $ 22,711 (1) Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [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. The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: Regulated electric $ 181 $ 184 Regulated natural gas 39 48 Total operating revenue $ 220 $ 232 Operating income: Regulated electric $ 31 $ 33 Regulated natural gas 8 7 Total operating income 39 40 Interest expense (14) (14) Allowance for equity funds 1 1 Other, net 6 1 Income before income tax expense $ 32 $ 28 As of March 31, December 31, 2021 2020 Assets: Regulated electric $ 3,589 $ 3,540 Regulated natural gas 348 342 Other (1) 26 37 Total assets $ 3,963 $ 3,919 (1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

Variable Interest Entities

Variable Interest Entities	3 Months Ended
Variable Interest Entities	Mar. 31, 2021
Eastern Energy Gas Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Variable Interest Entities	Variable Interest Entities The primary beneficiary of a variable interest entity ("VIE") is required to consolidate the VIE and to disclose certain information about its significant variable interests in the VIE. The primary beneficiary of a VIE is the entity that has both 1) the power to direct the activities that most significantly impact the entity's economic performance and 2) the obligation to absorb losses or receive benefits from the entity that could potentially be significant to the VIE. In November 2019, DEI contributed to Eastern Energy Gas a 75% controlling limited partner interest in Cove Point. In December 2019, DEI sold its retained 25% noncontrolling limited partner interest in Cove Point. As part of the GT&S Transaction, Eastern Energy Gas finalized a restructuring which included the disposition of a 50% noncontrolling interest in Cove Point to DEI, which resulted in Eastern Energy Gas owning 100% of the general partner interest and 25% of the limited partnership interest in Cove Point. Eastern Energy Gas concluded that Cove Point is a VIE due to the limited partners lacking the characteristics of a controlling financial interest. Eastern Energy Gas is the primary beneficiary of Cove Point as it has the power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to it. Eastern Energy Gas purchased shared services from Carolina Gas Services, Inc. ("Carolina Gas Services") an affiliated VIE, of $3 million and $4 million for the three-month periods ended March 31, 2021 and 2020, respectively. Eastern Energy Gas' Consolidated Balance Sheets included amounts due to Carolina Gas Services of $26 million and $22 million as of March 31, 2021 and December 31, 2020, respectively. Eastern Energy Gas determined that neither it nor any of its consolidated entities is the primary beneficiary of Carolina Gas Services as neither it nor any of its consolidated entities has both the power to direct the activities that most significantly impact its economic performance as well as the obligation to absorb losses and benefits which could be significant to them. Carolina Gas Services provides marketing and operational services. Neither Eastern Energy Gas nor any of its consolidated entities has any obligation to absorb more than its allocated share of Carolina Gas Services costs. Prior to the GT&S Transaction, Eastern Energy Gas purchased shared services from Dominion Energy Questar Pipeline Services, Inc. ("DEQPS"), an affiliated VIE, of $7 million for the three-month period ended March 31, 2020. Eastern Energy Gas determined that neither it nor any of its consolidated entities was the primary beneficiary of DEQPS, as neither it nor any of its consolidated entities has both the power to direct the activities that most significantly impact their economic performance as well as the obligation to absorb losses and benefits which could be significant to them. DEQPS provided marketing and operational services. Neither Eastern Energy Gas nor any of its consolidated entities had any obligation to absorb more than its allocated share of DEQPS costs. Prior to the GT&S Transaction, Eastern Energy Gas purchased shared services from Dominion Energy Services, Inc. ("DES"), an affiliated VIE, of $31 million for the three-month period ended March 31, 2020. Eastern Energy Gas determined that neither it nor any of its consolidated entities was the primary beneficiary of DES as neither it nor any of its consolidated entities had both the power to direct the activities that most significantly impact their economic performance as well as the obligation to absorb losses and benefits which could be significant to them. DES provided accounting, legal, finance and certain administrative and technical services. Neither Eastern Energy Gas nor any of its consolidated entities had any obligation to absorb more than its allocated share of DES costs.

Related Party Transactions

Related Party Transactions	3 Months Ended
Related Party Transactions	Mar. 31, 2021
Eastern Energy Gas Holdings, LLC [Member]
Schedule of Equity Method Investments [Line Items]
Related Party Transactions	Related Party Transactions Transactions Prior to the GT&S Transaction Prior to the GT&S Transaction, Eastern Energy Gas engaged in related party transactions primarily with other DEI subsidiaries (affiliates). Eastern Energy Gas' receivable and payable balances with affiliates were settled based on contractual terms or on a monthly basis, depending on the nature of the underlying transactions. Through October 31, 2020, Eastern Energy Gas was included in DEI's consolidated federal income tax return and, where applicable, combined state income tax returns. All affiliate payables or receivables were settled with DEI prior to the closing of the GT&S Transaction. Eastern Energy Gas transacted with affiliates for certain quantities of natural gas and other commodities at market prices in the ordinary course of business. Additionally, Eastern Energy Gas provided transportation and storage services to affiliates. Eastern Energy Gas also entered into certain other contracts with affiliates, and related parties, including construction services, which were presented separately from contracts involving commodities or services. Eastern Energy Gas participated in certain DEI benefit plans as described in Note 6. DES, Carolina Gas Services, DEQPS and other affiliates provided accounting, legal, finance and certain administrative and technical services to Eastern Energy Gas. Eastern Energy Gas provided certain services to related parties, including technical services. The financial statements for the three-month period ended March 31, 2020 include costs for certain general, administrative and corporate expenses assigned by DES, Carolina Gas Services and DEQPS to Eastern Energy Gas on the basis of direct and allocated methods in accordance with Eastern Energy Gas' services agreements with DES, Carolina Gas Services and DEQPS. Where costs incurred cannot be determined by specific identification, the costs were allocated based on the proportional level of effort devoted by DES, Carolina Gas Services and DEQPS resources that is attributable to the entity, determined by reference to number of employees, salaries and wages and other similar measures for the relevant DES service. Management believes the assumptions and methodologies underlying the allocation of general corporate overhead expenses are reasonable. Subsequent to the GT&S Transaction, and with the exception of Cove Point, Eastern Energy Gas' transactions with other DEI subsidiaries are no longer related-party transactions. Presented below are Eastern Energy Gas' significant transactions with DES, Carolina Gas Services, DEQPS and other affiliated and related parties for the three-month period ended March 31, 2020 (in millions): Sales of natural gas and transportation and storage services $ 64 Purchases of natural gas and transportation and storage services 3 Services provided by related parties (1) 43 Services provided to related parties (2) 32 (1) Includes capitalized expenditures of $3 million. (2) Amount primarily attributable to Atlantic Coast Pipeline, LLC, a related-party VIE prior to the GT&S Transaction. Interest income related to Eastern Energy Gas' affiliated notes receivable from DEI was $11 million for the three-month period ended March 31, 2020. Interest income related to Eastern Energy Gas' affiliated notes receivable from East Ohio Gas Company was $18 million for the three-month period ended March 31, 2020. For the three-month period ended March 31, 2020, Eastern Energy Gas distributed $37 million to DEI. Transactions Subsequent to the GT&S Transaction Eastern Energy Gas is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. For current federal and state income taxes, Eastern Energy Gas had a receivable from BHE of $21 million and $20 million as of March 31, 2021 and December 31, 2020, respectively. DEI, BHE, MidAmerican Energy, Northern Natural Gas Company and other related parties provided accounting, human resources, information technology and certain other administrative and technical services to Eastern Energy Gas, which totaled $7 million for the three-month period ended March 31, 2021. Eastern Energy Gas provided certain services to affiliates, including administrative and technical services, which totaled $9 million for the three-month period ended March 31, 2021. Eastern Energy Gas also provided transportation and storage services to affiliates, which totaled $7 million for the three-month period ended March 31, 2021. Other assets included amounts due from an affiliate of $6 million and $7 million as of March 31, 2021 and December 31, 2020, respectively. Eastern Energy Gas has a $400 million intercompany revolving credit agreement from its parent, BHE GT&S, LLC ("BHE GT&S") expiring in November 2021. The credit facility, which is for general corporate purposes and provide for the issuance of letters of credit, has a variable interest rate based on London Interbank Offered Rate ("LIBOR") plus a fixed spread. As of March 31, 2021 and December 31, 2020, $— million and $9 million, respectively, was outstanding under the credit agreement. BHE GT&S has an intercompany revolving credit agreement from Eastern Energy Gas expiring in December 2021. In March 2021, BHE GT&S increased its credit facility limit from $200 million to $400 million. The credit agreement has a variable interest rate based on LIBOR plus a fixed spread. As of March 31, 2021 and December 31, 2020, $234 million and $124 million, respectively, was outstanding under the credit agreement. Eastern Energy Gas participates in certain MidAmerican Energy benefit plans as described in Note 6. As of March 31, 2021 and December 31, 2020, Eastern Energy Gas' amount due to MidAmerican Energy associated with these plans and reflected in other long-term liabilities on the Consolidated Balance Sheets was $110 million and $115 million, respectively.

Cash and Cash Equivalents and_2

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure (Policies)	3 Months Ended
	Mar. 31, 2021
MidAmerican Funding, LLC and Subsidiaries [Member]
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation and, as of December 31, 2020, the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements.
MidAmerican Energy Company [Member]
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation and, as of December 31, 2020, the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements.

Business Combination Disclosu_2

Business Combination Disclosure Business Combination Disclosure (Tables)	3 Months Ended
	Mar. 31, 2021
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the preliminary fair values of the assets acquired and liabilities assumed as of the acquisition date (in millions): Fair Value Current assets, including cash and cash equivalents of $104 $ 569 Property, plant and equipment 9,254 Goodwill 1,732 Regulatory assets 108 Deferred income taxes 275 Other long-term assets 1,424 Total assets 13,362 Current liabilities, including current portion of long-term debt of $1,200 1,567 Long-term debt, less current portion 4,415 Regulatory liabilities 661 Other long-term liabilities 289 Total liabilities 6,932 Noncontrolling interest 3,916 Net assets acquired $ 2,514
Business Acquisition, Pro Forma Information	Pro Forma Financial Information The following unaudited pro forma financial information reflects the consolidated results of operations of BHE and the amortization of the purchase price adjustments assuming the acquisition had taken place on January 1, 2019, excluding non-recurring transaction costs incurred by BHE during 2020 (in millions): Three-Month Period Ended March 31, 2020 Operating revenue $ 5,056 Net income attributable to BHE shareholders $ 773

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	3 Months Ended
Property, Plant and Equipment, Net (Tables)	Mar. 31, 2021
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	Property, plant and equipment, net consists of the following (in millions): As of Depreciable March 31, December 31, Life 2021 2020 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 87,898 $ 86,730 Interstate natural gas pipeline assets 3-80 years 16,712 16,667 104,610 103,397 Accumulated depreciation and amortization (31,653) (30,662) Regulated assets, net 72,957 72,735 Nonregulated assets: Independent power plants 5-30 years 7,034 7,012 Other assets 3-40 years 5,794 5,659 12,828 12,671 Accumulated depreciation and amortization (2,337) (2,586) Nonregulated assets, net 10,491 10,085 Net operating assets 83,448 82,820 Construction work-in-progress 3,309 3,308 Property, plant and equipment, net $ 86,757 $ 86,128
MidAmerican Energy Company [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	Property, plant and equipment, net consists of the following (in millions): As of March 31, December 31, Depreciable Life 2021 2020 Utility plant in service, net: Generation 20-70 years $ 17,083 $ 16,980 Transmission 52-75 years 2,372 2,365 Electric distribution 20-75 years 4,433 4,369 Natural gas distribution 29-75 years 1,970 1,955 Utility plant in service 25,858 25,669 Accumulated depreciation and amortization (7,061) (6,902) Utility plant in service, net 18,797 18,767 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1) (1) Nonregulated property, net 6 6 18,803 18,773 Construction work-in-progress 420 506 Property, plant and equipment, net $ 19,223 $ 19,279
PacifiCorp [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	As of March 31, December 31, Depreciable Life 2021 2020 Utility Plant: Generation 15 - 59 years $ 13,355 $ 12,861 Transmission 60 - 90 years 7,686 7,632 Distribution 20 - 75 years 7,725 7,660 Intangible plant (1) 5 - 75 years 1,069 1,054 Other 5 - 60 years 1,513 1,510 Utility plant in service 31,348 30,717 Accumulated depreciation and amortization (9,980) (9,838) Utility plant in service, net 21,368 20,879 Other non-regulated, net of accumulated depreciation and amortization 14 - 95 years 9 9 Plant, net 21,377 20,888 Construction work-in-progress 1,158 1,542 Property, plant and equipment, net $ 22,535 $ 22,430 (1) Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years. Effective January 1, 2021, PacifiCorp revised its depreciation rates based on its recent depreciation study that was approved by its state regulatory commissions, other than in California. The approved depreciation rates resulted in an increase in depreciation expense of approximately $37 million for the three-month period ended March 31, 2021 compared to the three-month period ended March 31, 2020 based on historical property, plant and equipment balances and including depreciation of certain coal-fueled generating units in Washington over accelerated periods.
Nevada Power Company [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life March 31, December 31, 2021 2020 Utility plant: Generation 30 - 55 years $ 3,691 $ 3,690 Transmission 45 - 70 years 1,465 1,468 Distribution 20 - 65 years 3,803 3,771 General and intangible plant 5 - 65 years 798 791 Utility plant 9,757 9,720 Accumulated depreciation and amortization (3,224) (3,162) Utility plant, net 6,533 6,558 Other non-regulated, net of accumulated depreciation and amortization 45 years 1 1 Plant, net 6,534 6,559 Construction work-in-progress 217 142 Property, plant and equipment, net $ 6,751 $ 6,701
Sierra Pacific Power Company [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life March 31, December 31, 2021 2020 Utility plant: Electric generation 25 - 60 years $ 1,131 $ 1,130 Electric transmission 50 - 100 years 917 908 Electric distribution 20 - 100 years 1,763 1,754 Electric general and intangible plant 5 - 70 years 193 189 Natural gas distribution 35 - 70 years 431 429 Natural gas general and intangible plant 5 - 70 years 15 15 Common general 5 - 70 years 357 355 Utility plant 4,807 4,780 Accumulated depreciation and amortization (1,783) (1,755) Utility plant, net 3,024 3,025 Other non-regulated, net of accumulated depreciation and amortization 70 years 2 2 Plant, net 3,026 3,027 Construction work-in-progress 162 137 Property, plant and equipment, net $ 3,188 $ 3,164
Eastern Energy Gas Holdings, LLC [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	Property, plant and equipment, net consists of the following (in millions): As of March 31, December 31, Depreciable Life 2021 2020 Utility Plant: Interstate natural gas pipeline assets 24 - 43 years $ 8,385 $ 8,382 Intangible plant 5 - 10 years 114 115 Utility plant in service 8,499 8,497 Accumulated depreciation and amortization (2,792) (2,759) Utility plant in service, net 5,707 5,738 Nonutility Plant: LNG facility 40 years 4,460 4,454 Intangible plant 14 years 25 25 Nonutility plant in service 4,485 4,479 Accumulated depreciation and amortization (320) (283) Nonutility plant in service, net 4,165 4,196 Plant, net 9,872 9,934 Construction work- in-progress 227 210 Property, plant and equipment, net $ 10,099 $ 10,144

Investments and Restricted Ca_2

Investments and Restricted Cash and Cash Equivalents and Investments (Tables)	3 Months Ended
	Mar. 31, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Investments and Restricted Cash and Investments	Investments and restricted cash and cash equivalents and investments consists of the following (in millions): As of March 31, December 31, 2021 2020 Investments: BYD Company Limited common stock $ 4,773 $ 5,897 Rabbi trusts 452 440 Other 288 263 Total investments 5,513 6,600 Equity method investments: BHE Renewables tax equity investments 5,399 5,626 Iroquois Gas Transmission System, L.P. 586 580 Electric Transmission Texas, LLC 581 594 JAX LNG, LLC 80 75 Bridger Coal Company 68 74 Other 113 118 Total equity method investments 6,827 7,067 Restricted cash and cash equivalents and investments: Quad Cities Station nuclear decommissioning trust funds 697 676 Other restricted cash and cash equivalents 130 155 Total restricted cash and cash equivalents and investments 827 831 Total investments and restricted cash and cash equivalents and investments $ 13,167 $ 14,498 Reflected as: Current assets $ 157 $ 178 Noncurrent assets 13,010 14,320 Total investments and restricted cash and cash equivalents and investments $ 13,167 $ 14,498
Unrealized Gain (Loss) on Investments [Table Text Block]	(Losses) gains on marketable securities, net recognized during the period consists of the following (in millions): Three-Month Periods Ended March 31, 2021 2020 Unrealized (losses) gains recognized on marketable securities still held at the reporting date $ (1,119) $ 25 Net gains recognized on marketable securities sold during the period 1 2 (Losses) gains on marketable securities, net $ (1,118) $ 27
Schedule of Cash Flow, Supplemental Disclosures	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 1,276 $ 1,290 Restricted cash and cash equivalents 117 140 Investments and restricted cash and cash equivalents and investments 13 15 Total cash and cash equivalents and restricted cash and cash equivalents $ 1,406 $ 1,445
Eastern Energy Gas Holdings, LLC [Member]
Restricted Cash and Cash Equivalents Items [Line Items]
Investments and Restricted Cash and Investments	Investments and restricted cash and cash equivalents consists of the following (in millions): As of March 31, December 31, 2021 2020 Investments: Investment funds $ 12 $ — Equity method investments: Iroquois 250 244 Total investments 262 244 Restricted cash and cash equivalents: Customer deposits 9 13 Total restricted cash and cash equivalents 9 13 Total investments and restricted cash and cash equivalents $ 271 $ 257 Reflected as: Current assets $ 9 $ 13 Noncurrent assets 262 244 Total investments and restricted cash and cash equivalents $ 271 $ 257
Schedule of Cash Flow, Supplemental Disclosures	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 106 $ 35 Restricted cash and cash equivalents 9 13 Total cash and cash equivalents and restricted cash and cash equivalents $ 115 $ 48

Cash and Cash Equivalents and_3

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure (Tables)	3 Months Ended
	Mar. 31, 2021
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 1,276 $ 1,290 Restricted cash and cash equivalents 117 140 Investments and restricted cash and cash equivalents and investments 13 15 Total cash and cash equivalents and restricted cash and cash equivalents $ 1,406 $ 1,445
Sierra Pacific Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 8 $ 19 Restricted cash and cash equivalents included in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 15 $ 26
Nevada Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 92 $ 25 Restricted cash and cash equivalents included in other current assets 12 11 Total cash and cash equivalents and restricted cash and cash equivalents $ 104 $ 36
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures	As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 43 $ 13 Restricted cash included in other current assets 3 4 Restricted cash included in other assets 3 2 Total cash and cash equivalents and restricted cash and cash equivalents $ 49 $ 19
MidAmerican Funding, LLC and Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 38 $ 39 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 45 $ 46
MidAmerican Energy Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 37 $ 38 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 44 $ 45
Eastern Energy Gas Holdings, LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of March 31, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions): As of March 31, December 31, 2021 2020 Cash and cash equivalents $ 106 $ 35 Restricted cash and cash equivalents 9 13 Total cash and cash equivalents and restricted cash and cash equivalents $ 115 $ 48

Income Taxes (Tables)

Income Taxes (Tables)	3 Months Ended
Income Taxes (Tables)	Mar. 31, 2021
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Income tax credits 136 (46) State income tax, net of federal income tax impacts 21 — Income tax effect of foreign income 6 (3) Effects of ratemaking 10 (8) Equity income 15 (1) Noncontrolling interest 9 — Other, net (1) 1 Effective income tax rate 217 % (36) %
Sierra Pacific Power Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Effects of ratemaking (10) (8) Other 2 (2) Effective income tax rate 13 % 11 %
PacifiCorp [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % State income tax, net of federal income tax benefit 3 3 Federal income tax credits (20) (11) Effects of ratemaking (13) (22) Other 2 — Effective income tax rate (7) % (9) %
MidAmerican Energy Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the federal statutory income tax rate to MidAmerican Energy's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Income tax credits 2,400 (430) State income tax, net of federal income tax impacts (29) (28) Effects of ratemaking (186) (3) Other, net (6) 1 Effective income tax rate 2,200 % (439) %
MidAmerican Funding, LLC and Subsidiaries [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the federal statutory income tax rate to MidAmerican Funding's effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % Income tax credits 1,400 (463) State income tax, net of federal income tax impacts (8) (31) Effects of ratemaking (108) (3) Other, net (5) (1) Effective income tax rate 1,300 % (477) %
Eastern Energy Gas Holdings, LLC [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax expense is as follows: Three-Month Periods Ended March 31, 2021 2020 Federal statutory income tax rate 21 % 21 % State income tax, net of federal income tax benefit 3 3 Equity interest 2 1 Effects of ratemaking (1) (1) Absence of noncontrolling interest (11) (3) Other, net (1) 1 Effective income tax rate 13 % 22 %

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	3 Months Ended
Employee Benefit Plans (Tables)	Mar. 31, 2021
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures	Domestic Operations Net periodic benefit cost (credit) for the domestic pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ 7 $ 3 Interest cost 20 23 Expected return on plan assets (33) (35) Net amortization 6 9 Net periodic benefit cost $ — $ — Other postretirement: Service cost $ 2 $ 1 Interest cost 5 6 Expected return on plan assets (5) (9) Net amortization (1) (1) Net periodic benefit cost (credit) $ 1 $ (3) Foreign Operations Net periodic benefit credit for the United Kingdom pension plan included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Service cost $ 4 $ 4 Interest cost 8 10 Expected return on plan assets (28) (25) Net amortization 14 10 Net periodic benefit credit $ (2) $ (1)
PacifiCorp [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures	Net periodic benefit credit for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ — $ — Interest cost 7 9 Expected return on plan assets (13) (14) Net amortization 5 5 Net periodic benefit credit $ (1) $ — Other postretirement: Service cost $ — $ — Interest cost 2 3 Expected return on plan assets (2) (4) Net amortization — — Net periodic benefit credit $ — $ (1)
MidAmerican Energy Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures	Net periodic benefit cost (credit) for the plans of MidAmerican Energy and the aforementioned affiliates included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ 5 $ 1 Interest cost 6 6 Expected return on plan assets (9) (10) Net periodic benefit cost (credit) $ 2 $ (3) Other postretirement: Service cost $ 2 $ 1 Interest cost 2 2 Expected return on plan assets (2) (3) Net amortization (1) (1) Net periodic benefit cost (credit) $ 1 $ (1)
Nevada Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Amounts Recognized in Balance Sheet	Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of March 31, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 9 $ 8 Non-Qualified Pension Plans: Other current liabilities (1) (1) Other long-term liabilities (9) (9) Other Postretirement Plans: Other non-current assets 4 4
Sierra Pacific Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Amounts Recognized in Balance Sheet	Amounts receivable from (payable to) NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of March 31, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 27 $ 26 Non-Qualified Pension Plans: Other current liabilities (1) (1) Other long-term liabilities (8) (8) Other Postretirement Plans: Other long-term liabilities (14) (13)
Eastern Energy Gas Holdings, LLC [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Benefit Costs (Credits)	Net periodic benefit cost (credit) for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Ended March 31, 2021 2020 Pension: Service cost $ — $ 1 Interest cost — 3 Expected return on plan assets — (14) Net amortization — 2 Net periodic benefit cost (credit) $ — $ (8) Other Postretirement: Service cost $ — $ 1 Interest cost — 1 Expected return on plan assets — (5) Net amortization — (1) Net periodic benefit cost (credit) $ — $ (4)

Risk Management and Hedging A_2

Risk Management and Hedging Activities (Tables) - PacifiCorp [Member]	3 Months Ended
	Mar. 31, 2021
Derivative [Line Items]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	The following table, which reflects master netting arrangements and excludes contracts that have been designated as normal under the normal purchases or normal sales exception afforded by GAAP, summarizes the fair value of PacifiCorp's derivative contracts, on a gross basis, and reconciles those amounts to the amounts presented on a net basis on the Consolidated Balance Sheets (in millions): Other Other Other Current Other Current Long-term Assets Assets Liabilities Liabilities Total As of March 31, 2021 Not designated as hedging contracts (1) : Commodity assets $ 45 $ 6 $ 2 $ — $ 53 Commodity liabilities (2) — (27) (24) (53) Total 43 6 (25) (24) — Total derivatives 43 6 (25) (24) — Cash collateral receivable — — 13 4 17 Total derivatives - net basis $ 43 $ 6 $ (12) $ (20) $ 17 As of December 31, 2020 Not designated as hedging contracts (1) : Commodity assets $ 29 $ 6 $ 1 $ — $ 36 Commodity liabilities (2) — (23) (28) (53) Total 27 6 (22) (28) (17) Total derivatives 27 6 (22) (28) (17) Cash collateral receivable — — 15 9 24 Total derivatives - net basis $ 27 $ 6 $ (7) $ (19) $ 7 (1) PacifiCorp's commodity derivatives are generally included in rates and as of March 31, 2021 and December 31, 2020, a regulatory asset of $— million and $17 million, respectively, was recorded related to the net derivative liability of $— million and $17 million, respectively.
Schedule of Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Contracts	The following table reconciles the beginning and ending balances of PacifiCorp's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Ended March 31, 2021 2020 Beginning balance $ 17 $ 62 Changes in fair value (17) 34 Net gains reclassified to operating revenue — 8 Net losses reclassified to cost of fuel and energy — (20) Ending balance $ — $ 84
Schedule of Notional Amounts of Outstanding Derivative Positions	The following table summarizes the net notional amounts of outstanding commodity derivative contracts with fixed price terms that comprise the mark-to-market values as of (in millions): Unit of March 31, December 31, Measure 2021 2020 Electricity sales, net Megawatt hours — (1) Natural gas purchases Decatherms 114 100

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
Fair Value Measurements (Tables)	Mar. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents the Company's financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of March 31, 2021 Assets: Commodity derivatives $ 1 $ 72 $ 154 $ (18) $ 209 Foreign currency exchange rate derivatives — 12 — — 12 Interest rate derivatives — 33 47 — 80 Mortgage loans held for sale — 2,065 — — 2,065 Money market mutual funds (2) 807 — — — 807 Debt securities: United States government obligations 210 — — — 210 International government obligations — 5 — — 5 Corporate obligations — 71 — — 71 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 395 — — — 395 International companies 4,780 — — — 4,780 Investment funds 256 — — — 256 $ 6,449 $ 2,265 $ 201 $ (18) $ 8,897 Liabilities: Commodity derivatives $ — $ (90) $ (30) $ 39 $ (81) Foreign currency exchange rate derivatives — (1) — — (1) Interest rate derivatives (3) (14) (6) — (23) $ (3) $ (105) $ (36) $ 39 $ (105) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2020 Assets: Commodity derivatives $ 1 $ 73 $ 135 $ (21) $ 188 Foreign currency exchange rate derivatives — 20 — — 20 Interest rate derivatives — — 62 — 62 Mortgage loans held for sale — 2,001 — — 2,001 Money market mutual funds (2) 873 — — — 873 Debt securities: United States government obligations 200 — — — 200 International government obligations — 5 — — 5 Corporate obligations — 73 — — 73 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 6 — — 6 Equity securities: United States companies 381 — — — 381 International companies 5,906 — — — 5,906 Investment funds 201 — — — 201 $ 7,562 $ 2,180 $ 197 $ (21) $ 9,918 Liabilities: Commodity derivatives $ (1) $ (90) $ (19) $ 56 $ (54) Foreign currency exchange rate derivatives — (2) — — (2) Interest rate derivatives (5) (60) — — (65) $ (6) $ (152) $ (19) $ 56 $ (121) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $21 million and $35 million as of March 31, 2021 and December 31, 2020, respectively. (2) Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value Assets and Liabilities Net Measured On Recurring Basis Unobservable Input Reconciliation	The following table reconciles the beginning and ending balances of the Company's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Ended March 31, Interest Commodity Rate Derivatives Derivatives 2021: Beginning balance $ 116 $ 62 Changes included in earnings (1) (6) (21) Changes in fair value recognized in OCI (1) — Changes in fair value recognized in net regulatory assets 16 — Settlements (1) — Ending balance $ 124 $ 41 2020: Beginning balance $ 97 $ 14 Changes included in earnings (1) (3) 31 Changes in fair value recognized in net regulatory assets (40) — Purchases 2 — Settlements (4) — Ending balance $ 52 $ 45
Fair Value, by Balance Sheet Grouping	The following table presents the carrying value and estimated fair value of the Company's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 49,461 $ 55,926 $ 49,866 $ 60,633
Nevada Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents Nevada Power's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of March 31, 2021 Assets: Commodity derivatives $ — $ — $ 48 $ 48 Money market mutual funds (1) 86 — — 86 Investment funds 2 — — 2 $ 88 $ — $ 48 $ 136 Liabilities - commodity derivatives $ — $ — $ (21) $ (21) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 26 $ 26 Money market mutual funds (1) 21 — — 21 Investment funds 2 — — 2 $ 23 $ — $ 26 $ 49 Liabilities - commodity derivatives $ — $ — $ (11) $ (11) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation	The following table reconciles the beginning and ending balances of Nevada Power's commodity derivative assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Ended March 31, 2021 2020 Beginning balance $ 15 $ (8) Changes in fair value recognized in regulatory assets 11 (31) Settlements 1 1 Ending balance $ 27 $ (38)
Fair Value, by Balance Sheet Grouping	The following table presents the carrying value and estimated fair value of Nevada Power's long‑term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,497 $ 2,991 $ 2,496 $ 3,245
PacifiCorp [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents PacifiCorp's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of March 31, 2021 Assets: Commodity derivatives $ — $ 53 $ — $ (4) $ 49 Money market mutual funds (2) 36 — — — 36 Investment funds 30 — — — 30 $ 66 $ 53 $ — $ (4) $ 115 Liabilities - Commodity derivatives $ — $ (53) $ — $ 21 $ (32) As of December 31, 2020 Assets: Commodity derivatives $ — $ 36 $ — $ (3) $ 33 Money market mutual funds (2) 6 — — — 6 Investment funds 25 — — — 25 $ 31 $ 36 $ — $ (3) $ 64 Liabilities - Commodity derivatives $ — $ (53) $ — $ 27 $ (26) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $17 million and $24 million as of March 31, 2021 and December 31, 2020, respectively. (2) Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, by Balance Sheet Grouping	PacifiCorp's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of PacifiCorp's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of PacifiCorp's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of PacifiCorp's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 8,613 $ 10,198 $ 8,612 $ 10,995
MidAmerican Energy Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents MidAmerican Energy's financial assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of March 31, 2021: Assets: Commodity derivatives $ — $ 3 $ 2 $ (2) $ 3 Money market mutual funds (2) 38 — — — 38 Debt securities: United States government obligations 210 — — — 210 International government obligations — 5 — — 5 Corporate obligations — 71 — — 71 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 395 — — — 395 International companies 8 — — — 8 Investment funds 24 — — — 24 $ 675 $ 86 $ 2 $ (2) $ 761 Liabilities - commodity derivatives $ — $ (1) $ (1) $ 2 $ — Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2020: Assets: Commodity derivatives $ — $ 4 $ 5 $ (5) $ 4 Money market mutual funds (2) 41 — — — 41 Debt securities: United States government obligations 200 — — — 200 International government obligations — 5 — — 5 Corporate obligations — 73 — — 73 Municipal obligations — 2 — — 2 Agency, asset and mortgage-backed obligations — 6 — — 6 Equity securities: United States companies 381 — — — 381 International companies 9 — — — 9 Investment funds 17 — — — 17 $ 648 $ 90 $ 5 $ (5) $ 738 Liabilities - commodity derivatives $ — $ (4) $ (3) $ 5 $ (2) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $— million as of March 31, 2021 and December 31, 2020, respectively. (2) Amounts are included in cash and cash equivalents and investments and restricted investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, by Balance Sheet Grouping	MidAmerican Energy's long-term debt is carried at cost on the Balance Sheets. The fair value of MidAmerican Energy's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Energy's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Energy's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,224 $ 8,305 $ 7,210 $ 9,130
MidAmerican Funding, LLC and Subsidiaries [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, by Balance Sheet Grouping	MidAmerican Funding's long-term debt is carried at cost on the Consolidated Financial Statements. The fair value of MidAmerican Funding's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Funding's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Funding's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,464 $ 8,622 $ 7,450 $ 9,466
Sierra Pacific Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents Sierra Pacific's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of March 31, 2021 Assets: Commodity derivatives $ — $ — $ 16 $ 16 Money market mutual funds (1) 5 — — 5 $ 5 $ — $ 16 $ 21 Liabilities - commodity derivatives $ — $ — $ (4) $ (4) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 9 $ 9 Money market mutual funds (1) 17 — — 17 $ 17 $ — $ 9 $ 26 Liabilities - commodity derivatives $ — $ — $ (2) $ (2) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, by Balance Sheet Grouping	The following table presents the carrying value and estimated fair value of Sierra Pacific's long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,164 $ 1,312 $ 1,164 $ 1,358
Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents Eastern Energy Gas' financial assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of March 31, 2021 Assets: Foreign currency exchange rate derivatives $ — $ 12 $ — $ 12 Money market mutual funds (1) 71 — — 71 Investment funds 12 — — 12 $ 83 $ 12 $ — $ 95 Liabilities: Foreign currency exchange rate derivatives $ — $ (1) $ — $ (1) Interest rate derivatives — (3) — (3) $ — $ (4) $ — $ (4) As of December 31, 2020 Assets: Foreign currency exchange rate derivatives $ — $ 20 $ — $ 20 $ — $ 20 $ — $ 20 Liabilities: Commodity derivatives $ — $ (1) $ — $ (1) Foreign currency exchange rate derivatives — (2) — (2) Interest rate derivatives — (6) — (6) $ — $ (9) $ — $ (9) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, by Balance Sheet Grouping	The following table presents the carrying value and estimated fair value of Eastern Energy Gas' long-term debt (in millions): As of March 31, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 4,414 $ 4,744 $ 4,425 $ 5,012

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	3 Months Ended
Revenue from Contracts with Customers (Tables)	Mar. 31, 2021
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	Energy Products and Services The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the Company's reportable segment information included in Note 13 (in millions): For the Three-Month Period Ended March 31, 2021 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 1,145 $ 452 $ 511 $ — $ — $ — $ — $ — $ 2,108 Retail gas — 460 38 — — — — — 498 Wholesale 36 125 15 — 17 — — — 193 Transmission and 25 15 21 263 — 172 — — 496 Interstate pipeline — — — — 815 — — (41) 774 Other 23 — — — 2 — — — 25 Total Regulated 1,229 1,052 585 263 834 172 — (41) 4,094 Nonregulated — 10 — 10 237 8 166 187 618 Total Customer Revenue 1,229 1,062 585 273 1,071 180 166 146 4,712 Other revenue 13 5 6 27 22 — 24 40 137 Total $ 1,242 $ 1,067 $ 591 $ 300 $ 1,093 $ 180 $ 190 $ 186 $ 4,849 For the Three-Month Period Ended March 31, 2020 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 1,122 $ 410 $ 529 $ — $ — $ — $ — $ — $ 2,061 Retail gas — 187 47 — — — — — 234 Wholesale — 64 14 — — — — (1) 77 Transmission and 22 15 23 233 — 169 — — 462 Interstate pipeline — — — — 400 — — (48) 352 Other 26 — 1 — — — — — 27 Total Regulated 1,170 676 614 233 400 169 — (49) 3,213 Nonregulated — 6 1 7 — 3 159 127 303 Total Customer Revenue 1,170 682 615 240 400 172 159 78 3,516 Other revenue 36 4 7 26 1 — 19 25 118 Total $ 1,206 $ 686 $ 622 $ 266 $ 401 $ 172 $ 178 $ 103 $ 3,634
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	Remaining Performance Obligations The following table summarizes the Company's revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of March 31, 2021, by reportable segment (in millions):
HomeServices [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes the Company's real estate services Customer Revenue by line of business (in millions):
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes PacifiCorp's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Ended March 31, 2021 2020 Customer Revenue: Retail: Residential $ 483 $ 460 Commercial 359 358 Industrial 271 277 Other retail 32 27 Total retail 1,145 1,122 Wholesale (1) 36 — Transmission 25 22 Other Customer Revenue 23 26 Total Customer Revenue 1,229 1,170 Other revenue 13 36 Total operating revenue $ 1,242 $ 1,206
MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes MidAmerican Energy's revenue from contracts with customers ("Customer Revenue") by line of business and customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 10, (in millions): For the Three-Month Period Ended March 31, 2021 Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 161 $ 308 $ — $ 469 Commercial 71 129 — 200 Industrial 190 12 — 202 Natural gas transportation services — 10 — 10 Other retail (1) 30 1 — 31 Total retail 452 460 — 912 Wholesale 74 51 — 125 Multi-value transmission projects 15 — — 15 Other Customer Revenue — — 10 10 Total Customer Revenue 541 511 10 1,062 Other revenue 4 1 — 5 Total operating revenue $ 545 $ 512 $ 10 $ 1,067 For the Three-Month Period Ended March 31, 2020 Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 148 $ 128 $ — $ 276 Commercial 70 43 — 113 Industrial 163 4 — 167 Natural gas transportation services — 11 — 11 Other retail (1) 29 — — 29 Total retail 410 186 — 596 Wholesale 42 22 — 64 Multi-value transmission projects 16 — — 16 Other Customer Revenue — — 1 1 Total Customer Revenue 468 208 1 677 Other revenue 3 1 — 4 Total operating revenue $ 471 $ 209 $ 1 $ 681
Nevada Power Company [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes Nevada Power's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Ended March 31, 2021 2020 Customer Revenue: Retail: Residential $ 196 $ 193 Commercial 84 94 Industrial 63 70 Other 3 3 Total fully bundled 346 360 Distribution only service 5 7 Total retail 351 367 Wholesale, transmission and other 14 16 Total Customer Revenue 365 383 Other revenue 5 6 Total revenue $ 370 $ 389
Sierra Pacific Power Company [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 9 (in millions): Three-Month Periods Ended March 31, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 71 $ 25 $ 96 $ 69 $ 30 $ 99 Commercial 54 10 64 57 13 70 Industrial 39 3 42 41 4 45 Other 1 — 1 1 — 1 Total fully bundled 165 38 203 168 47 215 Distribution only service 1 — 1 1 — 1 Total retail 166 38 204 169 47 216 Wholesale, transmission and other 15 — 15 14 — 14 Total Customer Revenue 181 38 219 183 47 230 Other revenue — 1 1 1 1 2 Total revenue $ 181 $ 39 $ 220 $ 184 $ 48 $ 232
Eastern Energy Gas Holdings, LLC [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes Eastern Energy Gas' energy products and services revenue by regulated and nonregulated (in millions): Three-Month Periods Ended March 31, 2021 2020 Customer Revenue: Regulated: Gas transportation and storage $ 279 $ 344 Wholesale 17 2 Other — 1 Total regulated 296 347 Nonregulated 190 208 Total Customer Revenue 486 555 Other revenue — 1 Total operating revenue $ 486 $ 556
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction	The following table summarizes Eastern Energy Gas' revenue it expects to recognize in future periods related to significant unsatisfied remaining performance obligations for fixed contracts with expected durations in excess of one year as of March 31, 2021 (in millions): Performance obligations expected to be satisfied Less than 12 months More than 12 months Total Eastern Energy Gas $ 1,564 $ 16,115 $ 17,679

Components of Accumulated Oth_2

Components of Accumulated Other Comprehensive Loss, Net (Tables)	3 Months Ended
	Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Loss, Net	The following table shows the change in accumulated other comprehensive income (loss) attributable to BHE shareholders by each component of other comprehensive income (loss), net of applicable income tax (in millions): Unrecognized Foreign Unrealized AOCI Amounts on Currency (Losses) Gains Attributable Retirement Translation on Cash To BHE Benefits Adjustment Flow Hedges Shareholders, Net Balance, December 31, 2019 $ (417) $ (1,296) $ 7 $ (1,706) Other comprehensive income (loss) 34 (548) (33) (547) Balance, March 31, 2020 $ (383) $ (1,844) $ (26) $ (2,253) Balance, December 31, 2020 $ (482) $ (1,062) $ (8) $ (1,552) Other comprehensive income 7 91 14 112 Balance, March 31, 2021 $ (475) $ (971) $ 6 $ (1,440)
Eastern Energy Gas Holdings, LLC [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Loss, Net	The following table shows the change in accumulated other comprehensive loss by each component of other comprehensive income (loss), net of applicable income tax (in millions): Unrecognized Accumulated Amounts On Unrealized Other Retirement Losses on Cash Noncontrolling Comprehensive Benefits Flow Hedges Interests Loss, Net Balance, December 31, 2019 $ (106) $ (81) $ — $ (187) Other comprehensive income (loss) 1 (85) — (84) Balance, March 31, 2020 $ (105) $ (166) $ — $ (271) Balance, December 31, 2020 $ (12) $ (51) $ 10 $ (53) Other comprehensive income (loss) 2 10 (4) 8 Balance, March 31, 2021 $ (10) $ (41) $ 6 $ (45)

Segment Information (Tables)

Segment Information (Tables)	3 Months Ended
Segment Information (Tables)	Mar. 31, 2021
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	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. Information related to the Company's reportable segments is shown below (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: PacifiCorp $ 1,242 $ 1,206 MidAmerican Funding 1,067 686 NV Energy 591 622 Northern Powergrid 300 266 BHE Pipeline Group 1,093 401 BHE Transmission 180 172 BHE Renewables 190 178 HomeServices 1,232 893 BHE and Other (1) 186 103 Total operating revenue $ 6,081 $ 4,527 Depreciation and amortization: PacifiCorp $ 264 $ 252 MidAmerican Funding 207 176 NV Energy 136 124 Northern Powergrid 71 63 BHE Pipeline Group 118 64 BHE Transmission 58 60 BHE Renewables 60 71 HomeServices 11 11 BHE and Other (1) 2 — Total depreciation and amortization $ 927 $ 821 Three-Month Periods Ended March 31, 2021 2020 Operating income: PacifiCorp $ 234 $ 234 MidAmerican Funding 48 102 NV Energy 70 79 Northern Powergrid 151 132 BHE Pipeline Group 618 249 BHE Transmission 81 76 BHE Renewables 33 17 HomeServices 112 20 BHE and Other (1) (14) 10 Total operating income 1,333 919 Interest expense (530) (483) Capitalized interest 14 17 Allowance for equity funds 26 34 Interest and dividend income 21 20 (Losses) gains on marketable securities, net (1,118) 27 Other, net 8 (27) Total (loss) income before income tax benefit and equity loss $ (246) $ 507 Interest expense: PacifiCorp $ 107 $ 102 MidAmerican Funding 78 81 NV Energy 52 58 Northern Powergrid 33 32 BHE Pipeline Group 38 14 BHE Transmission 38 38 BHE Renewables 40 42 HomeServices 1 5 BHE and Other (1) 143 111 Total interest expense $ 530 $ 483 (Loss) earnings on common shares: PacifiCorp $ 169 $ 176 MidAmerican Funding 144 150 NV Energy 34 20 Northern Powergrid 104 87 BHE Pipeline Group 383 179 BHE Transmission 59 55 BHE Renewables 16 95 HomeServices 84 10 BHE and Other (1,027) (102) (Loss) earnings on common shares $ (34) $ 670 As of March 31, December 31, 2021 2020 Assets: PacifiCorp $ 26,956 $ 26,862 MidAmerican Funding 24,098 23,530 NV Energy 14,594 14,501 Northern Powergrid 8,980 8,782 BHE Pipeline Group 19,651 19,541 BHE Transmission 9,341 9,208 BHE Renewables 11,935 12,004 HomeServices 5,186 4,955 BHE and Other (1) 6,781 7,933 Total assets $ 127,522 $ 127,316 (1) The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.
Schedule of Goodwill	The following table shows the change in the carrying amount of goodwill by reportable segment for the three-month period ended March 31, 2021 (in millions): BHE Pipeline Group PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Transmission BHE Renewables HomeServices Total December 31, 2020 $ 1,129 $ 2,102 $ 2,369 $ 1,000 $ 1,803 $ 1,551 $ 95 $ 1,457 $ 11,506 Acquisitions — — — — — — — 1 1 Foreign currency translation — — — 6 — 21 — — 27 March 31, 2021 $ 1,129 $ 2,102 $ 2,369 $ 1,006 $ 1,803 $ 1,572 $ 95 $ 1,458 $ 11,534
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: Regulated electric $ 545 $ 471 Regulated natural gas 512 209 Other 10 1 Total operating revenue $ 1,067 $ 681 Operating income: Regulated electric $ 9 $ 59 Regulated natural gas 39 39 Total operating income 48 98 Interest expense (74) (76) Allowance for borrowed funds 2 3 Allowance for equity funds 6 8 Other, net 11 (5) (Loss) income before income tax benefit $ (7) $ 28 As of March 31, December 31, Assets: Regulated electric $ 20,272 $ 19,892 Regulated natural gas 1,725 1,544 Other 3 1 Total assets $ 22,000 $ 21,437
MidAmerican Funding, LLC and Subsidiaries [Member]
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: Regulated electric $ 545 $ 471 Regulated natural gas 512 209 Other 10 6 Total operating revenue $ 1,067 $ 686 Operating income: Regulated electric $ 9 $ 59 Regulated natural gas 39 39 Other — 4 Total operating income 48 102 Interest expense (78) (81) Allowance for borrowed funds 2 3 Allowance for equity funds 6 8 Other, net 10 (6) (Loss) income before income tax benefit $ (12) $ 26 As of March 31, December 31, Assets (1) : Regulated electric $ 21,463 $ 21,083 Regulated natural gas 1,804 1,623 Other 7 5 Total assets $ 23,274 $ 22,711 (1) Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Ended March 31, 2021 2020 Operating revenue: Regulated electric $ 181 $ 184 Regulated natural gas 39 48 Total operating revenue $ 220 $ 232 Operating income: Regulated electric $ 31 $ 33 Regulated natural gas 8 7 Total operating income 39 40 Interest expense (14) (14) Allowance for equity funds 1 1 Other, net 6 1 Income before income tax expense $ 32 $ 28 As of March 31, December 31, 2021 2020 Assets: Regulated electric $ 3,589 $ 3,540 Regulated natural gas 348 342 Other (1) 26 37 Total assets $ 3,963 $ 3,919 (1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

Related Party Transactions (Tab

Related Party Transactions (Tables)	3 Months Ended
Related Party Transactions (Tables)	Mar. 31, 2021
Eastern Energy Gas Holdings, LLC [Member]
Related Party Transaction [Line Items]
Schedule of Related Party Transactions	Presented below are Eastern Energy Gas' significant transactions with DES, Carolina Gas Services, DEQPS and other affiliated and related parties for the three-month period ended March 31, 2020 (in millions): Sales of natural gas and transportation and storage services $ 64 Purchases of natural gas and transportation and storage services 3 Services provided by related parties (1) 43 Services provided to related parties (2) 32 (1) Includes capitalized expenditures of $3 million. (2) Amount primarily attributable to Atlantic Coast Pipeline, LLC, a related-party VIE prior to the GT&S Transaction.

General (Details)

General (Details)	3 Months Ended
General (Details)	Mar. 31, 2021OwnedAndOperatedCompaniesOperatingSegments
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments \| OperatingSegments	8
Number of owned and operated utility companies in the United States	4
Number of states owned and operated utility companies serve customers	11
Number of owned and operated electricity distribution companies in Great Britain	2
Number of owned and operated interstate natural gas pipeline companies in the United States	5
Number of owned and operated electricity transmission companies in Canada	1
Number of owned and operated renewable energy businesses	1
Number of owned and operated residential real estate brokerage firms in the United States	1
Number of owned and operated residential real estate brokerage franchise networks in the United States	1

General - EEGH (Details)

General - EEGH (Details) - Eastern Energy Gas Holdings, LLC [Member] - mi	1 Months Ended		3 Months Ended
	Nov. 30, 2020	Jul. 31, 2020	Mar. 31, 2021
Cove Point LNG, LP [Member]
Variable Interest Entity [Line Items]
Percentage interest distributed		25.00%
Cove Point LNG, LP [Member] \| Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] \| GT&S Transaction [Member]
Variable Interest Entity [Line Items]
Percentage interest distributed	50.00%
Iroquois Gas Transmission System L.P. [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			50.00%
Variable Interest Entity, Primary Beneficiary [Member] \| General Partner [Member] \| Cove Point LNG, LP [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			100.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Limited Partner [Member] \| Cove Point LNG, LP [Member]
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			25.00%
Variable Interest Entity, Primary Beneficiary [Member] \| Federal Energy Regulatory Commission \| Iroquois Gas Transmission System L.P. [Member]
Variable Interest Entity [Line Items]
Miles of interstate natural gas transportation pipeline			416

Business Combination Disclosu_3

Business Combination Disclosure Business Combination Disclosure (Details) $ in Millions	Nov. 02, 2020USD ($)	Nov. 01, 2020USD ($)miBcf	Oct. 29, 2020USD ($)	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)	Oct. 31, 2020USD ($)	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)	Jul. 03, 2020USD ($)
Business Acquisition [Line Items]
Preferred Stock, Value, Issued				$ 3,750				$ 3,750
Operating revenue				6,081	$ 4,527
Net Income (Loss) Attributable to Parent				4	670
Goodwill				11,534				$ 11,506
Deferred income taxes and amortization of investment tax credits				(135)	47
Natural Gas Transmission and Storage Business Acquisition [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross		$ 2,500
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt		4,415							$ 5,600
Preferred Stock, Value, Issued			$ 3,750
Preferred Stock, Dividend Rate, Percentage			4.00%
Net Income (Loss) Attributable to Parent				$ 107
Business Acquisition, Accounting Revision Period, Twelve Months				12 months
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Assets		569
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Property, Plant, and Equipment		9,254
Goodwill		1,732
Regulatory Assets		108
Deferred income taxes and amortization of investment tax credits						$ 275
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Other Noncurrent Assets		1,424
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets		13,362
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities		1,567
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Regulatory Liabilities		661
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Other		289
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities		6,932
Noncontrolling Interest, Increase from Business Combination						$ 3,916
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net		2,514
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents		104
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Current Liabilities, Long-term Debt		1,200
Business Acquisition, Pro Forma Revenue					5,056
Business Acquisition, Pro Forma Net Income (Loss)					$ 773
Natural Gas Transmission and Storage Business Acquisition [Member] \| Goodwill
Business Acquisition [Line Items]
Finite-Lived Intangible Asset, Useful Life				15 years
Natural Gas Transmission and Storage Business Acquisition [Member] \| Domestic Tax Authority and State and Local Jurisdiction
Business Acquisition [Line Items]
Goodwill		$ 900
Natural Gas Transmission and Storage Business Acquisition [Member] \| Natural Gas
Business Acquisition [Line Items]
Operating revenue				$ 559
Natural Gas Transmission and Storage Business Acquisition [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Cove Point LNG, LP [Member] \| Other Ownership Interest
Business Acquisition [Line Items]
Variable interest entity, ownership percentage		25.00%
Natural Gas Transmission and Storage Business Acquisition [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Cove Point LNG, LP [Member] \| General Partner [Member]
Business Acquisition [Line Items]
Variable interest entity, ownership percentage		100.00%
Natural Gas Transmission and Storage Business Acquisition [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Cove Point LNG, LP [Member] \| Limited Partner [Member]
Business Acquisition [Line Items]
Variable interest entity, ownership percentage		25.00%
Natural Gas Transmission and Storage Business Acquisition [Member] \| Iroquois Gas Transmission System L.P. [Member]
Business Acquisition [Line Items]
Equity method investment, ownership percentage		50.00%
Natural Gas Transmission and Storage Business Acquisition [Member] \| Eastern Gas Transmission, Inc. [Member]
Business Acquisition [Line Items]
Ownership Percentage Acquired		100.00%
Natural Gas Transmission and Storage Business Acquisition [Member] \| Carolina Gas Transmission, LLC [Member]
Business Acquisition [Line Items]
Ownership Percentage Acquired		100.00%
Questar Pipeline Group and Dominion Questar Transaction [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross	$ 1,300
Questar Pipeline Group and Dominion Questar Transaction [Member] \| Forecast [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross							$ 1,300
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt							$ 430
Natural Gas Transmission and Storage Transaction [Member]
Business Acquisition [Line Items]
Miles of natural gas transmission lines \| mi		5,400
Natural gas transmission lines transportation per day capacity \| Bcf		12.5
Natural gas operated storage capacity \| Bcf		420
Natural gas company-owned working storage capacity \| Bcf		306
Liquefied natural gas storage capacity \| Bcf		14.6

Property, Plant and Equipment_3

Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 86,757	$ 86,128
Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	104,610	103,397
Accumulated depreciation and amortization	(31,653)	(30,662)
Property, plant and equipment in service, net	72,957	72,735
Construction in Progress, Gross	2,900	3,200
Regulated Operation [Member] \| Utility generation, transmission and distribution systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 87,898	86,730
Regulated Operation [Member] \| Utility generation, transmission and distribution systems \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Regulated Operation [Member] \| Utility generation, transmission and distribution systems \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	80 years
Regulated Operation [Member] \| Interstate natural gas pipeline assets [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 16,712	16,667
Regulated Operation [Member] \| Interstate natural gas pipeline assets [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	3 years
Regulated Operation [Member] \| Interstate natural gas pipeline assets [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	80 years
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 12,828	12,671
Accumulated depreciation and amortization	(2,337)	(2,586)
Property, plant and equipment in service, net	10,491	10,085
Unregulated Operation [Member] \| Independent power plants
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 7,034	7,012
Unregulated Operation [Member] \| Independent power plants \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Unregulated Operation [Member] \| Independent power plants \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	30 years
Unregulated Operation [Member] \| Other assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 5,794	5,659
Unregulated Operation [Member] \| Other assets \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	3 years
Unregulated Operation [Member] \| Other assets \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	40 years
Common Facilities [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment in service, net	$ 83,448	82,820
Property, plant and equipment, net	86,757	86,128
Construction in Progress
Property, Plant and Equipment [Line Items]
Construction in Progress, Gross	$ 3,309	$ 3,308

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - PacifiCorp (Details) - PacifiCorp [Member] - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		$ 31,348	$ 30,717
Public utility accumulated depreciation and amortization		(9,980)	(9,838)
Public Utilities Property, Plant And Equipment In Service, Net		21,368	20,879
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress		21,377	20,888
Public Utilities, Property, Plant and Equipment, Construction Work in Progress		1,158	1,542
Property, plant and equipment, net		22,535	22,430
Revised depreciation rates, 2021 depreciation increase
Property, Plant and Equipment [Line Items]
Depreciation		$ 37
Minimum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life		5 years
Public Utilities, Property, Plant and Equipment, Generation, Useful Life		15 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life		60 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life		20 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life		5 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life		75 years
Public Utilities, Property, Plant and Equipment, Generation, Useful Life		59 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life		90 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life		75 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life		60 years
Electricity Generation Plant, Non-Nuclear [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		$ 13,355	12,861
Electric Transmission [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		7,686	7,632
Electric Distribution [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		7,725	7,660
Intangible plant [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross	[1]	1,069	1,054
Other assets
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		$ 1,513	1,510
Computer Software, Intangible Asset \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life		5 years
Computer Software, Intangible Asset \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Finite-Lived Intangible Asset, Useful Life		10 years
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress		$ 9	$ 9
Unregulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life		14 years
Unregulated Operation [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life		95 years

[1]	Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.

Property, Plant and Equipment_5

Property, Plant and Equipment, Net Property, Plant and Equipment, Net - MEC (Details) - MidAmerican Energy Company [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 18,803	$ 18,773
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	420	506
Property, plant and equipment, net	19,223	19,279
Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress	25,858	25,669
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	(7,061)	(6,902)
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	18,797	18,767
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	(1)	(1)
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	6	6
Gross public utility property, plant and equipment in service	$ 7	7
Unregulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	20 years
Unregulated Operation [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	50 years
Electric Operations [Member] \| Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing	$ 17,083	16,980
Public Utilities, Property, Plant and Equipment, Transmission	2,372	2,365
Public Utilities, Property, Plant and Equipment, Distribution	$ 4,433	4,369
Electric Operations [Member] \| Regulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	20 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	52 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	20 years
Electric Operations [Member] \| Regulated Operation [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	70 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	75 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	75 years
Natural Gas Processing Plant [Member] \| Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution	$ 1,970	$ 1,955
Natural Gas Processing Plant [Member] \| Regulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	29 years
Natural Gas Processing Plant [Member] \| Regulated Operation [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	75 years

Property, Plant and Equipment_6

Property, Plant and Equipment, Net Property, Plant and Equipment, Net - NPC (Details) - Nevada Power Company [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 6,534	$ 6,559
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	217	142
Property, plant and equipment, net	6,751	6,701
Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing	3,691	3,690
Public Utilities, Property, Plant and Equipment, Transmission	1,465	1,468
Public Utilities, Property, Plant and Equipment, Distribution	3,803	3,771
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment	798	791
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress	9,757	9,720
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	3,224	3,162
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 6,533	6,558
Regulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	30 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	45 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	20 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	5 years
Regulated Operation [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	55 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	70 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	65 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	65 years
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 1	$ 1
Unregulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	45 years

Property, Plant and Equipment_7

Property, Plant and Equipment, Net Property, Plant and Equipment, Net - SPPC (Details) - Sierra Pacific Power Company [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 3,026	$ 3,027
Property, plant and equipment, net	3,188	3,164
Common Facilities [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	162	137
Property, plant and equipment, net	3,188	3,164
Regulated Operation [Member] \| Electricity Generation Plant, Non-Nuclear [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing	1,131	1,130
Public Utilities, Property, Plant and Equipment, Transmission	917	908
Public Utilities, Property, Plant and Equipment, Distribution	1,763	1,754
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment	$ 193	189
Regulated Operation [Member] \| Electricity Generation Plant, Non-Nuclear [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	25 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	50 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	20 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	5 years
Regulated Operation [Member] \| Electricity Generation Plant, Non-Nuclear [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	60 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	100 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	100 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	70 years
Regulated Operation [Member] \| Natural Gas Processing Plant [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution	$ 431	429
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment	$ 15	15
Regulated Operation [Member] \| Natural Gas Processing Plant [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	35 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	5 years
Regulated Operation [Member] \| Natural Gas Processing Plant [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	70 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	70 years
Regulated Operation [Member] \| Common Facilities [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Common	$ 357	355
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress	4,807	4,780
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	1,783	1,755
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 3,024	3,025
Regulated Operation [Member] \| Common Facilities [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Common, Useful Life	5 years
Regulated Operation [Member] \| Common Facilities [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Common, Useful Life	70 years
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 2	$ 2
Unregulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	70 years

Property, Plant and Equipment_8

Property, Plant and Equipment, Net - EEGH (Details) - Eastern Energy Gas Holdings, LLC [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Plant, net	$ 9,872	$ 9,934
Construction work- in-progress	227	210
Property, plant and equipment, net	10,099	10,144
Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Plant in service, net	8,499	8,497
Accumulated depreciation and amortization	(2,792)	(2,759)
Plant, net	5,707	5,738
Construction work- in-progress	211	196
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Plant in service, net	4,485	4,479
Accumulated depreciation and amortization	(320)	(283)
Plant, net	4,165	4,196
Interstate natural gas pipeline assets [Member] \| Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Plant in service, net	$ 8,385	8,382
Interstate natural gas pipeline assets [Member] \| Regulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	24 years
Interstate natural gas pipeline assets [Member] \| Regulated Operation [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	43 years
Intangible plant [Member] \| Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Plant in service, net	$ 114	115
Intangible plant [Member] \| Regulated Operation [Member] \| Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Intangible plant [Member] \| Regulated Operation [Member] \| Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	10 years
Intangible plant [Member] \| Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	14 years
Plant in service, net	$ 25	25
LNG facility [Member] \| Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Depreciable life	40 years
Plant in service, net	$ 4,460	$ 4,454

Investments and Restricted Ca_3

Investments and Restricted Cash and Cash Equivalents and Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Investments:
Investments	$ 5,513		$ 6,600
Equity Method Investments [Abstract]
Equity method investments	6,827		7,067
Restricted cash and cash equivalents:
Restricted cash and investments	827		831
Investments, including equity method investments and restricted cash and investments	13,167		14,498
Investments, including equity method investments and restricted cash and investments, current	157		178
Investments, including equity method investments and restricted cash and investments, noncurrent	13,010		14,320
Marketable Securities, Gain (Loss)	(1,119)	$ 25
Marketable Securities, Realized Gain (Loss)	1	2
Gain on Sale of Investments	(1,118)	27
Equity loss	(179)	(18)
Recognized Renewable Energy Production Tax Credits	315	$ 233
Quad Cities Station nuclear decommissioning trust funds [Member]
Restricted cash and cash equivalents:
Decommissioning fund investments, fair value	697		676
Other restricted cash and investments [Member]
Restricted cash and cash equivalents:
Restricted cash and investments	130		155
Equity Method Investments, tax equity investments [Member]
Equity Method Investments [Abstract]
Equity method investments	5,399		5,626
Restricted cash and cash equivalents:
Equity loss	218
Recognized Renewable Energy Production Tax Credits	148
Other Tax Expense (Benefit)	47
Equity Method Investments, tax equity investments [Member] \| Domestic Tax Authority and State and Local Jurisdiction
Restricted cash and cash equivalents:
Equity loss	23
Iroquois Gas Transmission System L.P. [Member]
Equity Method Investments [Abstract]
Equity method investments	586		580
ETT [Member]
Equity Method Investments [Abstract]
Equity method investments	581		594
JAX LNG, LLC
Equity Method Investments [Abstract]
Equity method investments	80		75
Bridger Coal Company [Member]
Equity Method Investments [Abstract]
Equity method investments	68		74
Other equity method investments [Member]
Equity Method Investments [Abstract]
Equity method investments	113		118
Equity Method Investments, impacted tax equity investments
Equity Method Investments [Abstract]
Equity method investments	2,800
BYD Company Limited common stock [Member]
Investments:
Available-for-sale securities, equity securities	4,773		5,897
Restricted cash and cash equivalents:
Marketable Securities, Gain (Loss)	1,124
Rabbi trusts [Member]
Investments:
Rabbi trusts, amount	452		440
Other investments [Member]
Investments:
Other investments	$ 288		$ 263

Investments and Restricted Ca_4

Investments and Restricted Cash and Cash Equivalents and Investments - EEGH -Components (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Investments:
Investments	$ 5,513	$ 6,600
Equity method investments:
Equity method investments	6,827	7,067
Restricted cash and cash equivalents:
Restricted cash and cash equivalents	827	831
Investments, including equity method investments and restricted cash and investments, current	157	178
Investments, including equity method investments and restricted cash and investments, noncurrent	13,010	14,320
Investments, including equity method investments and restricted cash and investments	13,167	14,498
Eastern Energy Gas Holdings, LLC [Member]
Investments:
Investments	262	244
Restricted cash and cash equivalents:
Restricted cash and cash equivalents	9	13
Investments, including equity method investments and restricted cash and investments, current	9	13
Investments, including equity method investments and restricted cash and investments, noncurrent	262	244
Investments, including equity method investments and restricted cash and investments	271	257
Eastern Energy Gas Holdings, LLC [Member] \| Customer Deposits [Member]
Restricted cash and cash equivalents:
Restricted cash and cash equivalents	9	13
Iroquois Gas Transmission System L.P. [Member]
Equity method investments:
Equity method investments	586	580
Iroquois Gas Transmission System L.P. [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Equity method investments:
Equity method investments	250	244
Investment funds [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Investments:
Investment funds	$ 12	$ 0

Investments and Restricted Ca_5

Investments and Restricted Cash and Cash Equivalents and Investments - EEGH - Narrative (Details) - Eastern Energy Gas Holdings, LLC [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Investments And Restricted Cash And Investments [Line Items]
Investment exceeded share of equity in net assets	$ 130		$ 130
Distributions received from investments	$ 10	$ 15
Iroquois Gas Transmission System L.P. [Member]
Investments And Restricted Cash And Investments [Line Items]
Equity method investment, ownership percentage	50.00%
White River Hub, LLC [Member]
Investments And Restricted Cash And Investments [Line Items]
Equity method investment, ownership percentage	50.00%

Investments and Restricted Ca_6

Investments and Restricted Cash and Cash Equivalents and Investments - EEGH - Reconciliation (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Total cash and cash equivalents and restricted cash and cash equivalents	1,406	1,445	$ 2,304	$ 1,268
Investments	5,513	6,600
Eastern Energy Gas Holdings, LLC [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	106	35
Restricted cash and cash equivalents	9	13
Total cash and cash equivalents and restricted cash and cash equivalents	115	48	$ 58	$ 39
Investments	$ 262	$ 244

Regulatory Matters - EEGH (Deta

Regulatory Matters - EEGH (Details) - USD ($) $ in Millions	Aug. 01, 2020	Dec. 31, 2020	Jan. 31, 2020	Oct. 31, 2020	Dec. 31, 2018
Eastern Gas Transmission and Storage, Inc. [Member] \| FERC Case, Disallowance Of Capitalized AFUDC, Resolved In December 2020
Schedule Of Regulatory Assets and Liabilities [Line Items]
Litigation settlement expense		$ 43
Litigation settlement expense, after-tax		$ 31
Eastern Gas Transmission and Storage, Inc. [Member] \| 2012 FERC Case, Disallowance Of Plant, Resolved In Q4 2018
Schedule Of Regulatory Assets and Liabilities [Line Items]
Litigation settlement expense					$ 129
Litigation settlement expense, after-tax					$ 94
General Rate Case [Member] \| Federal Energy Regulatory Commission \| Cove Point LNG, LP [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Proposed annual cost-of-service			$ 182
General Rate Case, Increase In Revenue \| Federal Energy Regulatory Commission \| Cove Point LNG, LP [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Approved rate increase (decrease) amount	$ 4
General Rate Case, Decrease In Depreciation Expense \| Federal Energy Regulatory Commission \| Cove Point LNG, LP [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Approved rate increase (decrease) amount	$ (1)
General Rate Case, Provision \| Federal Energy Regulatory Commission \| Cove Point LNG, LP [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Approved rate increase (decrease) amount				$ 7

Regulatory Matters - MEC (Detai

Regulatory Matters - MEC (Details) $ in Millions	Mar. 31, 2021USD ($)
MidAmerican Energy Company [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Adjustment Clause Accounts Receivable Payable	$ 245

Cash and Cash Equivalents and_4

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Restricted Cash and Cash Equivalents, Noncurrent	13	15
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 1,406	$ 1,445	$ 2,304	$ 1,268

Cash and Cash Equivalents and_5

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosures - MEC (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,406	1,445	$ 2,304	$ 1,268
MidAmerican Energy Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	37	38
Restricted cash and cash equivalents	7	7
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 44	$ 45	$ 128	$ 330

Cash and Cash Equivalents and_6

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosures - LLC (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,406	1,445	$ 2,304	$ 1,268
MidAmerican Funding, LLC and Subsidiaries [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	38	39
Restricted cash and cash equivalents	7	7
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 45	$ 46	$ 128	$ 331

Cash and Cash Equivalents and_7

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure - Pacificorp (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Restricted Cash and Cash Equivalents, Noncurrent	13	15
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,406	1,445	$ 2,304	$ 1,268
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	43	13
Restricted cash and cash equivalents	3	4
Restricted Cash and Cash Equivalents, Noncurrent	3	2
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 49	$ 19	$ 60	$ 36

Cash and Cash Equivalents and_8

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure - NPC (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,406	1,445	$ 2,304	$ 1,268
Nevada Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	92	25
Restricted cash and cash equivalents	12	11
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 104	$ 36	$ 133	$ 25

Cash and Cash Equivalents and_9

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure - SPPC (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,276	$ 1,290
Restricted cash and cash equivalents	117	140
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	1,406	1,445	$ 2,304	$ 1,268
Sierra Pacific Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	8	19
Restricted cash and cash equivalents	7	7
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 15	$ 26	$ 33	$ 32

Recent Financing Transactions R

Recent Financing Transactions Recent Financing Transactions - Long-Term Debt (Details) - BHE Pipeline Group [Member] $ in Millions	Mar. 31, 2021USD ($)
Northern Natural Gas \| Senior Notes, 3.40%, due 2051
Debt Instrument [Line Items]
Face amount	$ 550
Northern Natural Gas \| Senior Notes, 4.25%, due 2021
Debt Instrument [Line Items]
Face amount	$ 200
Subsidiary Debt [Member] \| Senior Notes, 3.40%, due 2051
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	3.40%
Subsidiary Debt [Member] \| Senior Notes, 4.25%, due 2021
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.25%

Recent Financing Transactions_2

Recent Financing Transactions Recent Financing Transactions - Credit Facilities (Details) $ in Millions	Mar. 31, 2021USD ($)
AltaLink Investments, L.P. [Member] \| Line of Credit [Member] \| Revolving credit facility, C$200 million, expiring April 2022
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 200

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	136.00%	(46.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	21.00%	0.00%
Income tax effect of foreign income	6.00%	(3.00%)
Effects of ratemaking	10.00%	(8.00%)
Effective Income Tax Rate Reconciliation, Equity in Earnings (Losses) of Unconsolidated Subsidiary, Percent	15.00%	(1.00%)
Absence of noncontrolling interest	(9.00%)	0.00%
Other, net	(1.00%)	1.00%
Effective income tax rate	217.00%	(36.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
Related Party Tax Expense [Abstract]
Recognized Renewable Energy Production Tax Credits	$ 315	$ 233
Income tax benefit	535	184
Marketable Securities, Gain (Loss)	(1,119)	25
Income before income tax expense and equity income	246	(507)
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	52
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	334
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount	51
Parent Company [Member]
Related Party Tax Expense [Abstract]
Related party transaction, cash paid for income taxes, net	$ 0	$ 100

Income Taxes - PAC (Details)

Income Taxes - PAC (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes - PAC (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
State income tax, net of federal income tax benefit	(21.00%)	0.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	136.00%	(46.00%)
Effects of ratemaking	10.00%	(8.00%)
Other, net	1.00%	(1.00%)
Effective income tax rate	(217.00%)	36.00%
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
PacifiCorp [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
State income tax, net of federal income tax benefit	3.00%	3.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(20.00%)	(11.00%)
Effects of ratemaking	(13.00%)	(22.00%)
Other, net	2.00%	0.00%
Effective income tax rate	(7.00%)	(9.00%)
Effective income tax reconciliation, Amortization of excess deferred income taxes, Dollar	$ 3	$ 30
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
BHE [Member] \| PacifiCorp [Member]
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash paid for income taxes, net	$ 1	$ 26

Income Taxes - MEC (Details)

Income Taxes - MEC (Details) - USD ($) $ in Millions	3 Months Ended
Income Taxes - MEC (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	136.00%	(46.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	21.00%	0.00%
Effects of ratemaking	10.00%	(8.00%)
Other, net	(1.00%)	1.00%
Effective income tax rate	(217.00%)	36.00%
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
Recognized Renewable Energy Production Tax Credits	$ 315	$ 233
Related Party Income Tax Receivable (Payable) [Abstract]
Income tax benefit	(535)	(184)
Income before income tax expense and equity income	(246)	$ 507
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	334
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 52
MidAmerican Energy Company [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	2400.00%	(430.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	(29.00%)	(28.00%)
Effects of ratemaking	(186.00%)	(3.00%)
Other, net	(6.00%)	1.00%
Effective income tax rate	2200.00%	(439.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
Recognized Renewable Energy Production Tax Credits	$ 151	$ 120
Related Party Income Tax Receivable (Payable) [Abstract]
Income tax benefit	(154)	(123)
Income before income tax expense and equity income	(7)	28
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	168
Effective Income Tax Rate Reconciliation, Regulatory Differences, Amount	13
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	2
MidAmerican Energy Company [Member] \| Berkshire Hathaway Energy [Member]
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash (paid) received for income taxes, net	$ 0	$ (46)
MidAmerican Funding, LLC and Subsidiaries [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	1400.00%	(463.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	(8.00%)	(31.00%)
Effects of ratemaking	(108.00%)	(3.00%)
Other, net	(5.00%)	(1.00%)
Effective income tax rate	1300.00%	(477.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
Recognized Renewable Energy Production Tax Credits	$ 151	$ 120
Related Party Income Tax Receivable (Payable) [Abstract]
Income tax benefit	(156)	(124)
Income before income tax expense and equity income	(12)	26
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	168
Effective Income Tax Rate Reconciliation, Regulatory Differences, Amount	13
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	3
MidAmerican Funding, LLC and Subsidiaries [Member] \| Berkshire Hathaway Energy [Member]
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash (paid) received for income taxes, net	$ 0	$ (47)

Income Taxes - MidAmerican Fund

Income Taxes - MidAmerican Funding (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	136.00%	(46.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	21.00%	0.00%
Effects of ratemaking	10.00%	(8.00%)
Other, net	(1.00%)	1.00%
Effective income tax rate	(217.00%)	36.00%
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
Recognized Renewable Energy Production Tax Credits	$ 315	$ 233
Related Party Income Tax Receivable (Payable) [Abstract]
Income tax benefit	(535)	(184)
Income before income tax expense and equity income	(246)	$ 507
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	334
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	$ 52
MidAmerican Funding, LLC and Subsidiaries [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	1400.00%	(463.00%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent	(8.00%)	(31.00%)
Effects of ratemaking	(108.00%)	(3.00%)
Other, net	(5.00%)	(1.00%)
Effective income tax rate	1300.00%	(477.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit	10 years
Recognized Renewable Energy Production Tax Credits	$ 151	$ 120
Related Party Income Tax Receivable (Payable) [Abstract]
Income tax benefit	(156)	(124)
Income before income tax expense and equity income	(12)	26
Effective Income Tax Rate Reconciliation, Regulatory Differences, Amount	13
Effective Income Tax Rate Reconciliation, Tax Credit, Amount	168
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount	3
MidAmerican Funding, LLC and Subsidiaries [Member] \| Berkshire Hathaway Energy [Member]
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash (paid) received for income taxes, net	$ 0	$ (47)

Income Taxes - SPPC (Details)

Income Taxes - SPPC (Details)	3 Months Ended
Income Taxes - SPPC (Details)	Mar. 31, 2021	Mar. 31, 2020
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%
Effects of ratemaking	10.00%	(8.00%)
Other, net	1.00%	(1.00%)
Effective income tax rate	(217.00%)	36.00%
Sierra Pacific Power Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%
Effects of ratemaking	10.00%	8.00%
Other, net	2.00%	(2.00%)
Effective income tax rate	13.00%	11.00%

Income Taxes - EEGH (Details)

Income Taxes - EEGH (Details) - USD ($)	3 Months Ended
Income Taxes - EEGH (Details) - USD ($)	Mar. 31, 2021	Mar. 31, 2020
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%
State income tax, net of federal income tax benefit	(21.00%)	0.00%
Equity interest	15.00%	(1.00%)
Absence of noncontrolling interest	(9.00%)	0.00%
Other, net	1.00%	(1.00%)
Effective income tax rate	(217.00%)	36.00%
Eastern Energy Gas Holdings, LLC [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%
State income tax, net of federal income tax benefit	3.00%	3.00%
Equity interest	2.00%	1.00%
Effects of ratemaking	(1.00%)	(1.00%)
Absence of noncontrolling interest	(11.00%)	(3.00%)
Other, net	(1.00%)	1.00%
Effective income tax rate	13.00%	22.00%
Eastern Energy Gas Holdings, LLC [Member] \| BHE [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Related party transaction, cash paid for income taxes, net	$ 0
Eastern Energy Gas Holdings, LLC [Member] \| Cove Point LNG, LP [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Ownership interest	75.00%	25.00%

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended
Employee Benefit Plans (Details) - USD ($) $ in Millions	Mar. 31, 2021	Mar. 31, 2020
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 1
Interest cost	5	6
Expected return on plan assets	(5)	(9)
Net amortization	(1)	(1)
Net periodic benefit cost (credit)	1	(3)
UNITED STATES \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	3
Interest cost	20	23
Expected return on plan assets	(33)	(35)
Net amortization	6	9
Net periodic benefit cost (credit)	0	0
UNITED KINGDOM \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4
Interest cost	8	10
Expected return on plan assets	(28)	(25)
Net amortization	14	10
Net periodic benefit cost (credit)	$ (2)	$ (1)

Employee Benefit Plans - Employ

Employee Benefit Plans - Employer Contributions (Details) - 3 months ended Mar. 31, 2021 £ in Millions, $ in Millions	USD ($)	GBP (£)	GBP (£)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 13
Employer contributions	3
UNITED STATES \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	3
UNITED KINGDOM \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year \| £			£ 50
Employer contributions	$ 15	£ 11

Employee Benefit Plans Employee

Employee Benefit Plans Employee Benefit Plans - PacifiCorp (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 1
Interest cost	5	6
Expected return on plan assets	(5)	(9)
Net amortization	(1)	(1)
Net periodic benefit cost	1	(3)
PacifiCorp [Member] \| Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	2	3
Expected return on plan assets	(2)	(4)
Net amortization	0	0
Net periodic benefit cost	0	(1)
UNITED STATES \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	3
Interest cost	20	23
Expected return on plan assets	(33)	(35)
Net amortization	6	9
Net periodic benefit cost	0	0
UNITED STATES \| PacifiCorp [Member] \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0
Interest cost	7	9
Expected return on plan assets	(13)	(14)
Net amortization	5	5
Net periodic benefit cost	$ (1)	$ 0

Employee Benefit Plans Employ_2

Employee Benefit Plans Employee Benefit Plans - PacifiCorp - Employer Contributions (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 13
Employer contributions	3
PacifiCorp [Member] \| Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	1
UNITED STATES \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	3
UNITED STATES \| PacifiCorp [Member] \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	1
Defined Benefit Plan, Expected Future Employer Contributions, Next Fiscal Year	$ 4

Employee Benefit Plans - MEC (D

Employee Benefit Plans - MEC (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Pension Plan [Member] \| UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7	$ 3
Interest cost	20	23
Expected return on plan assets	(33)	(35)
Net amortization	6	9
Net periodic benefit cost	0	0
Pension Plan [Member] \| UNITED STATES \| MidAmerican Energy Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	1
Interest cost	6	6
Expected return on plan assets	(9)	(10)
Net periodic benefit cost	2	(3)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	1
Interest cost	5	6
Expected return on plan assets	(5)	(9)
Net amortization	(1)	(1)
Net periodic benefit cost	1	(3)
Other Postretirement Benefits Plan [Member] \| MidAmerican Energy Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	1
Interest cost	2	2
Expected return on plan assets	(2)	(3)
Net amortization	(1)	(1)
Net periodic benefit cost	$ 1	$ (1)

Employee Benefit Plans Employ_3

Employee Benefit Plans Employee Benefit Plans - MEC - Employer Contributions (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 13
Employer contributions	3
MidAmerican Energy Company [Member] \| Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	12
Employer contributions	3
UNITED STATES \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	3
UNITED STATES \| MidAmerican Energy Company [Member] \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	7
Employer contributions	$ 2

Employee Benefit Plans - NPC -

Employee Benefit Plans - NPC - Amounts Payable (Details) - Nevada Power Company [Member] - UNITED STATES - NV Energy, Inc. [Member] - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Other Assets [Member] \| Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets for Plan Benefits, Defined Benefit Plan	$ 4	$ 4
Other Current Liabilities [Member] \| Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Current	(1)	(1)
Other Noncurrent Liabilities [Member] \| Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	(9)	(9)
Qualified Plan \| Other Assets [Member] \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets for Plan Benefits, Defined Benefit Plan	$ 9	$ 8

Employee Benefit Plans - SPPC -

Employee Benefit Plans - SPPC - Amounts Payable (Details) - Sierra Pacific Power Company [Member] - UNITED STATES - NV Energy, Inc. [Member] - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Other Current Liabilities [Member] \| Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Current	$ (1)	$ (1)
Other Noncurrent Liabilities [Member] \| Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	(8)	(8)
Other Noncurrent Liabilities [Member] \| Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	(14)	(13)
Qualified Plan \| Other Assets [Member] \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Assets for Plan Benefits, Defined Benefit Plan	$ 27	$ 26

Employee Benefit Plans - EEGH -

Employee Benefit Plans - EEGH - Net Periodic Benefit Cost (Credit) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 1
Interest cost	5	6
Expected return on plan assets	(5)	(9)
Net amortization	(1)	(1)
Net periodic benefit cost (credit)	1	(3)
UNITED STATES \| Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	3
Interest cost	20	23
Expected return on plan assets	(33)	(35)
Net amortization	6	9
Net periodic benefit cost (credit)	0	0
UNITED STATES \| Pension Plan [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1
Interest cost	0	3
Expected return on plan assets	0	(14)
Net amortization	0	2
Net periodic benefit cost (credit)	0	(8)
UNITED STATES \| Other Postretirement Benefits Plan [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	1
Interest cost	0	1
Expected return on plan assets	0	(5)
Net amortization	0	(1)
Net periodic benefit cost (credit)	$ 0	$ (4)

Risk Management and Hedging A_3

Risk Management and Hedging Activities - PacifiCorp - Balance Sheet Location (Details) - PacifiCorp [Member] - Commodity derivative [Member] - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	$ 0	$ (17)
Cash collateral, net receivable, offset against derivative positions	17	24
Derivative assets (liabilities), at fair value, net	17	7
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	43	27
Cash collateral, net receivable, offset against derivative positions	0	0
Derivative assets (liabilities), at fair value, net	43	27
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	6	6
Cash collateral, net receivable, offset against derivative positions	0	0
Derivative assets (liabilities), at fair value, net	6	6
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	(25)	(22)
Cash collateral, net receivable, offset against derivative positions	13	15
Derivative assets (liabilities), at fair value, net	(12)	(7)
Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	(24)	(28)
Cash collateral, net receivable, offset against derivative positions	4	9
Derivative assets (liabilities), at fair value, net	(20)	(19)
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	53	36
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(53)	(53)
Derivative, fair value, net	0	(17)
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts	0	17	$ 84	$ 62
Not Designated as Hedging Instrument [Member] \| Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	45	29
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(2)	(2)
Derivative, fair value, net	43	27
Not Designated as Hedging Instrument [Member] \| Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	6	6
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0	0
Derivative, fair value, net	6	6
Not Designated as Hedging Instrument [Member] \| Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	2	1
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(27)	(23)
Derivative, fair value, net	(25)	(22)
Not Designated as Hedging Instrument [Member] \| Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(24)	(28)
Derivative, fair value, net	$ (24)	$ (28)

Risk Management and Hedging A_4

Risk Management and Hedging Activities - PacifiCorp - Not Designated as Hedging Contracts (Details) - PacifiCorp [Member] - Commodity derivative [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Instruments [Line Items]
Derivative, Fair Value, Net	$ 0		$ (17)
Not Designated as Hedging Instrument [Member]
Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Instruments [Line Items]
Beginning balance	17	$ 62
Changes in fair value recognized in net regulatory assets	(17)	34
Net (losses) gains reclassified to operating revenue	0	8
Net Gains (Losses) Reclassified To Cost Of Domestic Regulated Electric	0	(20)
Ending balance	0	$ 84
Derivative, Fair Value, Net	$ 0		$ (17)

Risk Management and Hedging A_5

Risk Management and Hedging Activities - PacifiCorp - Derivative Contract Volumes (Details) - PacifiCorp [Member] - Commodity derivative [Member] MWh in Millions, Dth in Millions	Mar. 31, 2021MWhDth	Dec. 31, 2020MWhDth
Electricity sales, net
Notional Amounts of Outstanding Derivative Positions [Line Items]
Derivative, Nonmonetary Notional Amount \| MWh	0	1
Natural gas purchases
Notional Amounts of Outstanding Derivative Positions [Line Items]
Derivative, Nonmonetary Notional Amount \| Dth	114	100

Risk Management and Hedging A_6

Risk Management and Hedging Activities - PacifiCorp - Collateral and Contingent Features (Details) - PacifiCorp [Member] - Commodity derivative [Member] - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative, net liability position, aggregate fair value	$ 52	$ 51
Collateral already posted, aggregate fair value	17	24
Additional collateral, aggregate fair value	$ 30	$ 25

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions		3 Months Ended
Fair Value Measurements (Details) - USD ($) $ in Millions		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	$ (18)		$ (21)
Assets, fair value disclosure		8,897		9,918
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	39		56
Derivative liabilities		(105)		(121)
Cash collateral, net receivable, offset against derivative positions		21		35
Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		6,449		7,562
Derivative liabilities		(3)		(6)
Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,265		2,180
Derivative liabilities		(105)		(152)
Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		201		197
Derivative liabilities		(36)		(19)
Mortgage Loans on Real Estate [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		2,065		2,001
Mortgage Loans on Real Estate [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		0		0
Mortgage Loans on Real Estate [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		2,065		2,001
Mortgage Loans on Real Estate [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		0		0
Money market mutual funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	807		873
Money market mutual funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	807		873
Money market mutual funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	0		0
Money market mutual funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	0		0
United States government obligations [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		210		200
United States government obligations [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		210		200
United States government obligations [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
United States government obligations [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
International government obligations [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		5
International government obligations [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
International government obligations [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		5
International government obligations [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
Corporate obligations [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		71		73
Corporate obligations [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
Corporate obligations [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		71		73
Corporate obligations [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
Municipal obligations [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		2		2
Municipal obligations [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
Municipal obligations [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		2		2
Municipal obligations [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
US Government-sponsored Enterprises Debt Securities [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		6
US Government-sponsored Enterprises Debt Securities [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
US Government-sponsored Enterprises Debt Securities [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		6
US Government-sponsored Enterprises Debt Securities [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0
United States companies [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		395		381
United States companies [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		395		381
United States companies [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0		0
United States companies [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0		0
International companies [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		4,780		5,906
International companies [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		4,780		5,906
International companies [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0		0
International companies [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0		0
Investment funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256		201
Investment funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256		201
Investment funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0		0
Investment funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0		0
Commodity derivative [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	(18)		(21)
Derivative assets		209		188
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	39		56
Derivative liabilities		(81)		(54)
Commodity derivative [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		1		1
Derivative liability, fair value, gross liability including not subject to master netting arrangement		0		(1)
Commodity derivative [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		72		73
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(90)		(90)
Commodity derivative [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		154		135
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(30)		(19)
Foreign Exchange Contract \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		12		20
Derivative liabilities		(1)		(2)
Foreign Exchange Contract \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		12		20
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(1)		(2)
Interest Rate Contract [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		80		62
Derivative liabilities		(23)		(65)
Interest Rate Contract [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0		0
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(3)		(5)
Interest Rate Contract [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		33		0
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(14)		(60)
Interest Rate Contract [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		47		62
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(6)		0
Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Value		124	$ 52	116	$ 97
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings		6	3
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net		(16)	40
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases			2
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements		1	4
Interest Rate Lock Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Value		41	45	$ 62	$ 14
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings		21	(31)
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net		0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases			0
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements		$ 0	$ 0

[1]	Represents netting under master netting arrangements and a net cash collateral receivable of $17 million and $24 million as of March 31, 2021 and December 31, 2020, respectively.
[2]	Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - Level

Fair Value Measurements - Level 3 (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Commodity derivative [Member]
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 116	$ 97
Changes included in earnings	(6)	(3)
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)	1
Changes in fair value recognized in net regulatory assets	16	(40)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		2
Settlements	(1)	(4)
Ending balance	124	52
Interest Rate Lock Commitments [Member]
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	62	14
Changes included in earnings	(21)	31
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)	0
Changes in fair value recognized in net regulatory assets	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		0
Settlements	0	0
Ending balance	$ 41	$ 45

Fair Value Measurements - Debt

Fair Value Measurements - Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 49,461	$ 49,866
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 55,926	$ 60,633

Fair Value Measurements - Pacif

Fair Value Measurements - PacifiCorp (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	$ (18)	$ (21)
Assets, fair value disclosure		8,897	9,918
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	39	56
Derivative Liability		(105)	(121)
Cash collateral, net receivable, offset against derivative positions		21	35
Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		6,449	7,562
Derivative Liability		(3)	(6)
Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,265	2,180
Derivative Liability		(105)	(152)
Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		201	197
Derivative Liability		(36)	(19)
Commodity derivative [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	(18)	(21)
Derivative assets		209	188
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	39	56
Derivative Liability		(81)	(54)
Commodity derivative [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		1	1
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	(1)
Commodity derivative [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		72	73
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(90)	(90)
Commodity derivative [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		154	135
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(30)	(19)
Money market mutual funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	807	873
Money market mutual funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	807	873
Money market mutual funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	0	0
Money market mutual funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	0	0
Investment funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256	201
Investment funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256	201
Investment funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Investment funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
PacifiCorp [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		115	64
PacifiCorp [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		66	31
PacifiCorp [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		53	36
PacifiCorp [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		0	0
PacifiCorp [Member] \| Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash collateral, net receivable, offset against derivative positions		17	24
PacifiCorp [Member] \| Commodity derivative [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset		(4)	(3)
Derivative assets		49	33
Derivative liability, fair value, gross asset and right to reclaim cash, offset		21	27
Derivative Liability		(32)	(26)
Cash collateral, net receivable, offset against derivative positions		17	24
PacifiCorp [Member] \| Commodity derivative [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
PacifiCorp [Member] \| Commodity derivative [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		53	36
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(53)	(53)
PacifiCorp [Member] \| Commodity derivative [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
PacifiCorp [Member] \| Money market mutual funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	36	6
PacifiCorp [Member] \| Money market mutual funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	36	6
PacifiCorp [Member] \| Money market mutual funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
PacifiCorp [Member] \| Money market mutual funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
PacifiCorp [Member] \| Investment funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		30	25
PacifiCorp [Member] \| Investment funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		30	25
PacifiCorp [Member] \| Investment funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
PacifiCorp [Member] \| Investment funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		$ 0	$ 0

[1]	Represents netting under master netting arrangements and a net cash collateral receivable of $17 million and $24 million as of March 31, 2021 and December 31, 2020, respectively.
[2]	Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - Pac_2

Fair Value Measurements - PacifiCorp - Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 49,461	$ 49,866
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	55,926	60,633
PacifiCorp [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	8,613	8,612
PacifiCorp [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 10,198	$ 10,995

Fair Value Measurements - MEC (

Fair Value Measurements - MEC (Details) - Recurring [Member] - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	$ (18)	$ (21)
Assets, fair value disclosure		8,897	9,918
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	39	56
Cash collateral, net receivable, offset against derivative positions		21	35
Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	807	873
United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		210	200
International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	5
Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		71	73
Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		2	2
US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	6
United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		395	381
International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		4,780	5,906
Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256	201
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		6,449	7,562
Level 1 [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	807	873
Level 1 [Member] \| United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		210	200
Level 1 [Member] \| International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] \| Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] \| Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] \| United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		395	381
Level 1 [Member] \| International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		4,780	5,906
Level 1 [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256	201
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,265	2,180
Level 2 [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	0	0
Level 2 [Member] \| United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 2 [Member] \| International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	5
Level 2 [Member] \| Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		71	73
Level 2 [Member] \| Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		2	2
Level 2 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	6
Level 2 [Member] \| United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Level 2 [Member] \| International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Level 2 [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		201	197
Level 3 [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[2]	0	0
Level 3 [Member] \| United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] \| International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] \| Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] \| Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] \| United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Level 3 [Member] \| International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Level 3 [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	(18)	(21)
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	39	56
Commodity derivative [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		1	1
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	(1)
Commodity derivative [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		72	73
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(90)	(90)
Commodity derivative [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		154	135
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(30)	(19)
MidAmerican Energy Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		761	738
Cash collateral, net receivable, offset against derivative positions		0	0
MidAmerican Energy Company [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[3]	38	41
MidAmerican Energy Company [Member] \| United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		210	200
MidAmerican Energy Company [Member] \| International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	5
MidAmerican Energy Company [Member] \| Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		71	73
MidAmerican Energy Company [Member] \| Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		2	2
MidAmerican Energy Company [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	6
MidAmerican Energy Company [Member] \| United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		395	381
MidAmerican Energy Company [Member] \| International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		8	9
MidAmerican Energy Company [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		24	17
MidAmerican Energy Company [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		675	648
MidAmerican Energy Company [Member] \| Level 1 [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[3]	38	41
MidAmerican Energy Company [Member] \| Level 1 [Member] \| United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		210	200
MidAmerican Energy Company [Member] \| Level 1 [Member] \| International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 1 [Member] \| Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 1 [Member] \| Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 1 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 1 [Member] \| United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		395	381
MidAmerican Energy Company [Member] \| Level 1 [Member] \| International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		8	9
MidAmerican Energy Company [Member] \| Level 1 [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		24	17
MidAmerican Energy Company [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		86	90
MidAmerican Energy Company [Member] \| Level 2 [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[3]	0	0
MidAmerican Energy Company [Member] \| Level 2 [Member] \| United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 2 [Member] \| International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	5
MidAmerican Energy Company [Member] \| Level 2 [Member] \| Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		71	73
MidAmerican Energy Company [Member] \| Level 2 [Member] \| Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		2	2
MidAmerican Energy Company [Member] \| Level 2 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	6
MidAmerican Energy Company [Member] \| Level 2 [Member] \| United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
MidAmerican Energy Company [Member] \| Level 2 [Member] \| International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
MidAmerican Energy Company [Member] \| Level 2 [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0
MidAmerican Energy Company [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2	5
MidAmerican Energy Company [Member] \| Level 3 [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[3]	0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
MidAmerican Energy Company [Member] \| Level 3 [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0
MidAmerican Energy Company [Member] \| Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		3	4
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[4]	(2)	(5)
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	(2)
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[4]	2	5
MidAmerican Energy Company [Member] \| Commodity derivative [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
MidAmerican Energy Company [Member] \| Commodity derivative [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		3	4
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(1)	(4)
MidAmerican Energy Company [Member] \| Commodity derivative [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		2	5
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		$ (1)	$ (3)

[1]	Represents netting under master netting arrangements and a net cash collateral receivable of $17 million and $24 million as of March 31, 2021 and December 31, 2020, respectively.
[2]	Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
[3]	Amounts are included in cash and cash equivalents and investments and restricted investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost.
[4]	Represents netting under master netting arrangements and a net cash collateral receivable of $— million as of March 31, 2021 and December 31, 2020, respectively.

Fair Value Measurements - MEC -

Fair Value Measurements - MEC - Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 49,461	$ 49,866
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	55,926	60,633
MidAmerican Energy Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	7,224	7,210
Long-term debt, fair value		$ 9,130
MidAmerican Energy Company [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 8,305

Fair Value Measurements - MidAm

Fair Value Measurements - MidAmerican Funding - Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 49,461	$ 49,866
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	55,926	60,633
MidAmerican Funding, LLC and Subsidiaries [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	7,464	7,450
Long-term debt, fair value		$ 9,466
MidAmerican Funding, LLC and Subsidiaries [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 8,622

Fair Value Measurements - NPC (

Fair Value Measurements - NPC (Details) - Recurring [Member] - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		$ 8,897	$ 9,918
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		6,449	7,562
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,265	2,180
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		201	197
Commodity derivative [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		1	1
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	(1)
Commodity derivative [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		72	73
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(90)	(90)
Commodity derivative [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		154	135
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(30)	(19)
Nevada Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		136	49
Nevada Power Company [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		88	23
Nevada Power Company [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		0	0
Nevada Power Company [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		48	26
Nevada Power Company [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	86	21
Nevada Power Company [Member] \| Money market mutual funds [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	86	21
Nevada Power Company [Member] \| Money market mutual funds [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	0	0
Nevada Power Company [Member] \| Money market mutual funds [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	0	0
Nevada Power Company [Member] \| Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		2	2
Nevada Power Company [Member] \| Investment funds [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		2	2
Nevada Power Company [Member] \| Investment funds [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0	0
Nevada Power Company [Member] \| Investment funds [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0	0
Nevada Power Company [Member] \| Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		48	26
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(21)	(11)
Nevada Power Company [Member] \| Commodity derivative [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
Nevada Power Company [Member] \| Commodity derivative [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
Nevada Power Company [Member] \| Commodity derivative [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		48	26
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		$ (21)	$ (11)

[1]	Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - NPC -

Fair Value Measurements - NPC - Level 3 (Details) - Nevada Power Company [Member] - Commodity [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 15	$ (8)
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net	(11)	31
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements	(1)	(1)
Ending balance	$ 27	$ (38)

Fair Value Measurements - NPC_2

Fair Value Measurements - NPC - Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 49,461	$ 49,866
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	55,926	60,633
Nevada Power Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	2,497	2,496
Nevada Power Company [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 2,991	$ 3,245

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Measurements - SPPC (Details) - Recurring [Member] - USD ($) $ in Millions	Mar. 31, 2021		Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 8,897		$ 9,918
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	6,449		7,562
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	2,265		2,180
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	201		197
Commodity derivative [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	1		1
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0		(1)
Commodity derivative [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	72		73
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(90)		(90)
Commodity derivative [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	154		135
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(30)		(19)
Sierra Pacific Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	21		26	[1]
Sierra Pacific Power Company [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	5		17	[1]
Sierra Pacific Power Company [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0		0	[1]
Sierra Pacific Power Company [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	16		9	[1]
Sierra Pacific Power Company [Member] \| Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	5	[2]	17
Sierra Pacific Power Company [Member] \| Money market mutual funds [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	5	[2]	17
Sierra Pacific Power Company [Member] \| Money market mutual funds [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	[2]	0
Sierra Pacific Power Company [Member] \| Money market mutual funds [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	[2]	0
Sierra Pacific Power Company [Member] \| Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	16		9
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(4)		(2)
Sierra Pacific Power Company [Member] \| Commodity derivative [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	0		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0		0
Sierra Pacific Power Company [Member] \| Commodity derivative [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	0		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0		0
Sierra Pacific Power Company [Member] \| Commodity derivative [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	16		9
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	$ (4)		$ (2)

[1]	Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
[2]	Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - SPPC

Fair Value Measurements - SPPC - Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 49,461	$ 49,866
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	55,926	60,633
Sierra Pacific Power Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	1,164	1,164
Sierra Pacific Power Company [Member] \| Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 1,312	$ 1,358

Fair Value Measurements - EEGH

Fair Value Measurements - EEGH - Fair Value Hierarchy (Details) - USD ($) $ in Millions		Mar. 31, 2021	Dec. 31, 2020
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		$ 8,897	$ 9,918
Derivative liabilities		(105)	(121)
Recurring [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		95	20
Derivative liabilities		(4)	(9)
Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		6,449	7,562
Derivative liabilities		(3)	(6)
Recurring [Member] \| Level 1 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		83	0
Derivative liabilities		0	0
Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,265	2,180
Derivative liabilities		(105)	(152)
Recurring [Member] \| Level 2 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		12	20
Derivative liabilities		(4)	(9)
Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		201	197
Derivative liabilities		(36)	(19)
Recurring [Member] \| Level 3 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		0	0
Derivative liabilities		0	0
Money market mutual funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[1]	807	873
Money market mutual funds [Member] \| Recurring [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		71
Money market mutual funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[1]	807	873
Money market mutual funds [Member] \| Recurring [Member] \| Level 1 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		71
Money market mutual funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[1]	0	0
Money market mutual funds [Member] \| Recurring [Member] \| Level 2 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0
Money market mutual funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	[1]	0	0
Money market mutual funds [Member] \| Recurring [Member] \| Level 3 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0
Investment funds [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		12	0
Investment funds [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256	201
Investment funds [Member] \| Recurring [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		12
Investment funds [Member] \| Recurring [Member] \| Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		256	201
Investment funds [Member] \| Recurring [Member] \| Level 1 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		12
Investment funds [Member] \| Recurring [Member] \| Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Investment funds [Member] \| Recurring [Member] \| Level 2 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0
Investment funds [Member] \| Recurring [Member] \| Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0	0
Investment funds [Member] \| Recurring [Member] \| Level 3 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities		0
Commodity Derivatives [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		209	188
Derivative liabilities		(81)	(54)
Commodity Derivatives [Member] \| Recurring [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities			(1)
Commodity Derivatives [Member] \| Recurring [Member] \| Level 1 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities			0
Commodity Derivatives [Member] \| Recurring [Member] \| Level 2 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities			(1)
Commodity Derivatives [Member] \| Recurring [Member] \| Level 3 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities			0
Foreign Currency Exchange Rate Derivatives [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		12	20
Derivative liabilities		(1)	(2)
Foreign Currency Exchange Rate Derivatives [Member] \| Recurring [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		12	20
Derivative liabilities		(1)	(2)
Foreign Currency Exchange Rate Derivatives [Member] \| Recurring [Member] \| Level 1 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities		0	0
Foreign Currency Exchange Rate Derivatives [Member] \| Recurring [Member] \| Level 2 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		12	20
Derivative liabilities		(1)	(2)
Foreign Currency Exchange Rate Derivatives [Member] \| Recurring [Member] \| Level 3 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		0	0
Derivative liabilities		0	0
Interest Rate Derivatives [Member] \| Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		80	62
Derivative liabilities		(23)	(65)
Interest Rate Derivatives [Member] \| Recurring [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities		(3)	(6)
Interest Rate Derivatives [Member] \| Recurring [Member] \| Level 1 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities		0	0
Interest Rate Derivatives [Member] \| Recurring [Member] \| Level 2 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities		(3)	(6)
Interest Rate Derivatives [Member] \| Recurring [Member] \| Level 3 [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liabilities		$ 0	$ 0

[1]	Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - EEG_2

Fair Value Measurements - EEGH - Debt (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 49,461	$ 49,866
Eastern Energy Gas Holdings, LLC [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	4,414	4,425
Long-term debt, fair value	$ 4,744	$ 5,012

Commitments and Contingencies -

Commitments and Contingencies - Commitments (Details) - PacifiCorp [Member] - Klamath Hydroelectric System [Member] $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Dam removal cost limit	$ 200
Additional dam removal costs, California bond measure	250
Hydroelectric Dam Removal Cost, Additional Contingency Funding	45
Hydroelectric Dam Removal Cost, Total Funding	$ 450

Commitments and Contingencies_2

Commitments and Contingencies - Legal Matters (Details) - 2020 Wildfires - PacifiCorp [Member] a in Millions, $ in Millions	1 Months Ended	7 Months Ended
	Sep. 30, 2020anaturalGasProducer	Mar. 31, 2021USD ($)
Loss Contingencies [Line Items]
Number of Acres Burned \| a	0.5
Number of Structures Destroyed \| naturalGasProducer	2,000
Fire Suppression Costs		$ 150
Loss Contingency, Estimate of Possible Loss		$ 136

Commitments and Contingencies C

Commitments and Contingencies Commitments and Contingencies - PacifiCorp - Legal Matters (Details) - PacifiCorp [Member] - 2020 Wildfires a in Millions, $ in Millions	1 Months Ended	7 Months Ended
	Sep. 30, 2020anaturalGasProducer	Mar. 31, 2021USD ($)
Loss Contingencies [Line Items]
Number of Acres Burned \| a	0.5
Number of Structures Destroyed \| naturalGasProducer	2,000
Loss Contingency, Estimate of Possible Loss		$ 136
Fire Suppression Costs		$ 150

Commitments and Contingencies_3

Commitments and Contingencies Commitments and Contingencies - PacifiCorp - Hydroelectric (Details) - Klamath Hydroelectric System [Member] - PacifiCorp [Member] $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
Hydroelectric [Line Items]
Dam removal cost limit	$ 200
Additional dam removal costs, California bond measure	250
Hydroelectric Dam Removal Cost, Additional Contingency Funding	45
Hydroelectric Dam Removal Cost, Total Funding	$ 450

Commitments and Contingencies_4

Commitments and Contingencies Commitments and Contingencies - MEC - Transmission Rates (Details) - MidAmerican Energy Company [Member] - Electric Transmission [Member] $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity Adder, Percentage	0.50%
Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Accrued liability for estimated transmission billings refunds	$ 10
Prior to September 2016 [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	12.38%
November 2013 to February 2015 [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	10.32%
Public Utilities, Intervenor Proposed Return On Equity, Percentage	9.15%
February 2015 through May 2016 [Member]
Loss Contingencies [Line Items]
Public Utilities, Intervenor Proposed Return On Equity, Percentage	8.67%
Nov 2019 Order For Nov 2013 to Feb 2015 and Sept 2016 Forward [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	9.88%
Public Utilities, Approved Return on Equity Plus Adder, Percentage	10.38%
May 2020 Order For Nov 2013 to Feb 2015 and Sept 2016 Forward [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	10.02%
Public Utilities, Approved Return on Equity Plus Adder, Percentage	10.52%

Revenue from Contracts with C_3

Revenue from Contracts with Customers (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue		$ 4,712	$ 3,516
Operating revenue		6,081	4,527
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		137	118
Electricity and natural gas [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		4,849	3,634
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,229	1,170
Operating revenue		1,242	1,206
PacifiCorp [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		13	36
NV Energy, Inc. [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		585	615
Operating revenue		591	622
NV Energy, Inc. [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		6	7
Northern Powergrid Holdings [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		273	240
Operating revenue		300	266
Northern Powergrid Holdings [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		27	26
BHE Pipeline Group [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,071	400
Operating revenue		1,093	401
BHE Pipeline Group [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		22	1
BHE Transmission [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		180	172
Operating revenue		180	172
BHE Transmission [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		0	0
BHE Renewables [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		166	159
Operating revenue		190	178
BHE Renewables [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		24	19
Berkshire Hathaway Energy And Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	146	78
Operating revenue	[1],[2]	186	103
Berkshire Hathaway Energy And Other [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	[1]	40	25
MidAmerican Funding [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,062	682
Operating revenue		1,067	686
MidAmerican Funding [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		5	4
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		4,094	3,213
Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		2,108	2,061
Regulated Operation [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		498	234
Regulated Operation [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		193	77
Regulated Operation [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		496	462
Regulated Operation [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		774	352
Regulated Operation [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		25	27
Regulated Operation [Member] \| PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,229	1,170
Regulated Operation [Member] \| PacifiCorp [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,145	1,122
Regulated Operation [Member] \| PacifiCorp [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| PacifiCorp [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		36	0
Regulated Operation [Member] \| PacifiCorp [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		25	22
Regulated Operation [Member] \| PacifiCorp [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| PacifiCorp [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		23	26
Regulated Operation [Member] \| NV Energy, Inc. [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		585	614
Regulated Operation [Member] \| NV Energy, Inc. [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		511	529
Regulated Operation [Member] \| NV Energy, Inc. [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		38	47
Regulated Operation [Member] \| NV Energy, Inc. [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		15	14
Regulated Operation [Member] \| NV Energy, Inc. [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		21	23
Regulated Operation [Member] \| NV Energy, Inc. [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| NV Energy, Inc. [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	1
Regulated Operation [Member] \| Northern Powergrid Holdings [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		263	233
Regulated Operation [Member] \| Northern Powergrid Holdings [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| Northern Powergrid Holdings [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| Northern Powergrid Holdings [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| Northern Powergrid Holdings [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		263	233
Regulated Operation [Member] \| Northern Powergrid Holdings [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| Northern Powergrid Holdings [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Pipeline Group [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		834	400
Regulated Operation [Member] \| BHE Pipeline Group [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Pipeline Group [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Pipeline Group [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		17	0
Regulated Operation [Member] \| BHE Pipeline Group [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Pipeline Group [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		815	400
Regulated Operation [Member] \| BHE Pipeline Group [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		2	0
Regulated Operation [Member] \| BHE Transmission [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		172	169
Regulated Operation [Member] \| BHE Transmission [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Transmission [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Transmission [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Transmission [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		172	169
Regulated Operation [Member] \| BHE Transmission [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Transmission [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Renewables [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Renewables [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Renewables [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Renewables [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Renewables [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Renewables [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| BHE Renewables [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	(41)	(49)
Regulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	0	0
Regulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	0	0
Regulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	0	(1)
Regulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	0	0
Regulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	(41)	(48)
Regulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	0	0
Regulated Operation [Member] \| MidAmerican Funding [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,052	676
Regulated Operation [Member] \| MidAmerican Funding [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		452	410
Regulated Operation [Member] \| MidAmerican Funding [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		460	187
Regulated Operation [Member] \| MidAmerican Funding [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		125	64
Regulated Operation [Member] \| MidAmerican Funding [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		15	15
Regulated Operation [Member] \| MidAmerican Funding [Member] \| Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Regulated Operation [Member] \| MidAmerican Funding [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Unregulated Operation [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		618	303
Unregulated Operation [Member] \| PacifiCorp [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	0
Unregulated Operation [Member] \| NV Energy, Inc. [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		0	1
Unregulated Operation [Member] \| Northern Powergrid Holdings [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		10	7
Unregulated Operation [Member] \| BHE Pipeline Group [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		237	0
Unregulated Operation [Member] \| BHE Transmission [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		8	3
Unregulated Operation [Member] \| BHE Renewables [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		166	159
Unregulated Operation [Member] \| Berkshire Hathaway Energy And Other [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	187	127
Unregulated Operation [Member] \| MidAmerican Funding [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		$ 10	$ 6

[1]	The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations.
[2]	The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.

Revenue from Contracts with C_4

Revenue from Contracts with Customers - Real Estate Services (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 4,712	$ 3,516
Operating revenue	6,081	4,527
Residential real estate brokerage and mortgage businesses [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,232	893
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	137	118
HomeServices [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,232	893
HomeServices [Member] \| Residential real estate brokerage [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,022	777
HomeServices [Member] \| Real estate franchise [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	18	16
HomeServices [Member] \| Residential real estate brokerage and mortgage businesses [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,040	793
Operating revenue	1,232	893
HomeServices [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	$ 192	$ 100

Revenue from Contracts with C_5

Revenue from Contracts with Customers - Remaining Performance Obligation (Details) $ in Millions	Mar. 31, 2021USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 23,952
Eastern Energy Gas Holdings, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	17,679
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 3,034
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 \| Eastern Energy Gas Holdings, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 1,564
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 20,918
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01 \| Eastern Energy Gas Holdings, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 16,115
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
BHE Pipeline Group [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 23,439
BHE Pipeline Group [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 2,521
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
BHE Pipeline Group [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 20,918
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period
BHE Transmission [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 513
BHE Transmission [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 513
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	12 months
BHE Transmission [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 0
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period

Revenue from Contracts with C_6

Revenue from Contracts with Customers - Remaining Performance Obligation Total (Details) $ in Millions	Mar. 31, 2021USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 23,952
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	3,034
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	20,918
BHE Pipeline Group [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	23,439
BHE Pipeline Group [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	2,521
BHE Pipeline Group [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	20,918
BHE Transmission [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	513
BHE Transmission [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	513
BHE Transmission [Member] \| Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 0

Revenue from Contracts with C_7

Revenue from Contracts with Customers - PAC - Customer Revenue (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue		$ 4,712	$ 3,516
Operating revenue		6,081	4,527
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		137	118
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		4,094	3,213
Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		2,108	2,061
Regulated Operation [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		193	77
Regulated Operation [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		496	462
Regulated Operation [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		25	27
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		1,242	1,206
PacifiCorp [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		13	36
PacifiCorp [Member] \| Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,229	1,170
PacifiCorp [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		1,145	1,122
PacifiCorp [Member] \| Regulated Operation [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	[1]	36	0
PacifiCorp [Member] \| Regulated Operation [Member] \| Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		25	22
PacifiCorp [Member] \| Regulated Operation [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		23	26
PacifiCorp [Member] \| Regulated Operation [Member] \| Residential [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		483	460
PacifiCorp [Member] \| Regulated Operation [Member] \| Commercial [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		359	358
PacifiCorp [Member] \| Regulated Operation [Member] \| Industrial [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		271	277
PacifiCorp [Member] \| Regulated Operation [Member] \| Other [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue		$ 32	$ 27

[1]	Includes net payments to counterparties for the financial settlement of certain non-derivative forward contracts for energy sales

Revenue from Contracts with C_8

Revenue from Contracts with Customers - MEC (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 4,712	$ 3,516
Operating revenue	6,081	4,527
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	137	118
MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,062	677
Operating revenue	1,067	681
MidAmerican Energy Company [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	5	4
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,094	3,213
Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2,108	2,061
Regulated Operation [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	498	234
Regulated Operation [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	193	77
Regulated Operation [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	25	27
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	912	596
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	469	276
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail [Member] \| Commercial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	200	113
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail [Member] \| Industrial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	202	167
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail [Member] \| Natural gas distribution, transportation-only services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	10	11
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	31	29	[1]
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	125	64
Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Electricity Transmission [Member] \| Multi value transmission projects [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	15	16
Unregulated Operation [Member] \| MidAmerican Energy Company [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	10	1
Electricity Us Regulated Member \| MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	545	471
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	541	468
Operating revenue	545	471
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	452	410
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail electric [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	161	148
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail electric [Member] \| Commercial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	71	70
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail electric [Member] \| Industrial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	190	163
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail electric [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	30	29	[1]
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	74	42
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Electricity Transmission [Member] \| Multi value transmission projects [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	15	16
Electricity Us Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	4	3
Natural Gas US Regulated Member \| MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	512	209
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	511	208
Operating revenue	512	209
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	460	186
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail gas [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	308	128
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail gas [Member] \| Commercial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	129	43
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail gas [Member] \| Industrial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	12	4
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail gas [Member] \| Natural gas distribution, transportation-only services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	10	11
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated retail gas [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	0	[1]
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	51	22
Natural Gas US Regulated Member \| Regulated Operation [Member] \| MidAmerican Energy Company [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1	1
Corporate and Other [Member] \| MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	10	1
Corporate and Other [Member] \| Unregulated Operation [Member] \| MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	10	1
Operating revenue	10	1
Corporate and Other [Member] \| Unregulated Operation [Member] \| MidAmerican Energy Company [Member] \| Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	10	1
Corporate and Other [Member] \| Unregulated Operation [Member] \| MidAmerican Energy Company [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	$ 0	$ 0

[1]	Other retail includes provisions for rate refunds, for which any actual refunds will be reflected in the applicable customer classes upon resolution of the related regulatory proceeding.

Revenue from Contracts with C_9

Revenue from Contracts with Customers - LLC - Customer Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 4,712	$ 3,516
Unregulated Operation [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	618	303
Corporate and Other [Member] \| MidAmerican Funding, LLC and Subsidiaries [Member] \| Unregulated Operation [Member] \| Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 0	$ 5

Revenue from Contracts with _10

Revenue from Contracts with Customers - NPC - Customer Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 4,712	$ 3,516
Operating revenue	6,081	4,527
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	137	118
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,094	3,213
Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2,108	2,061
Nevada Power Company [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	370	389
Nevada Power Company [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	5	6
Nevada Power Company [Member] \| Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	365	383
Nevada Power Company [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	351	367
Nevada Power Company [Member] \| Regulated Operation [Member] \| Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	14	16
Nevada Power Company [Member] \| Fully bundled customer [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	346	360
Nevada Power Company [Member] \| Fully bundled customer [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	196	193
Nevada Power Company [Member] \| Fully bundled customer [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member] \| Commercial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	84	94
Nevada Power Company [Member] \| Fully bundled customer [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member] \| Industrial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	63	70
Nevada Power Company [Member] \| Fully bundled customer [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3	3
Nevada Power Company [Member] \| Distribution only service [Member] \| Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5	$ 7

Revenue from Contracts with _11

Revenue from Contracts with Customers - SPPC - Customer Revenue (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 4,712	$ 3,516
Operating revenue	6,081	4,527
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	137	118
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,094	3,213
Regulated Operation [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2,108	2,061
Regulated Operation [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	498	234
Sierra Pacific Power Company [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	220	232
Sierra Pacific Power Company [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1	2
Sierra Pacific Power Company [Member] \| Regulated Electric [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	181	184
Sierra Pacific Power Company [Member] \| Regulated Electric [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	0	1
Sierra Pacific Power Company [Member] \| Regulated Gas [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	39	48
Sierra Pacific Power Company [Member] \| Regulated Gas [Member] \| Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1	1
Sierra Pacific Power Company [Member] \| Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	219	230
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	15	14
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Regulated Electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	181	183
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Regulated Electric [Member] \| Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	15	14
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Regulated Gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	38	47
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Regulated Gas [Member] \| Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	203	215
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	96	99
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Commercial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	64	70
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Industrial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	42	45
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Electric [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	165	168
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Electric [Member] \| Regulated retail electric [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	71	69
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Electric [Member] \| Regulated retail electric [Member] \| Commercial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	54	57
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Electric [Member] \| Regulated retail electric [Member] \| Industrial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	39	41
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Electric [Member] \| Regulated retail electric [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Gas [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	38	47
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Gas [Member] \| Regulated retail gas [Member] \| Residential [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	25	30
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Gas [Member] \| Regulated retail gas [Member] \| Commercial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	10	13
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Gas [Member] \| Regulated retail gas [Member] \| Industrial [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3	4
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled customer [Member] \| Regulated Gas [Member] \| Regulated retail gas [Member] \| Other [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Distribution only service [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Distribution only service [Member] \| Regulated Electric [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Distribution only service [Member] \| Regulated Gas [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled and distribution services only customer [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	204	216
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled and distribution services only customer [Member] \| Regulated Electric [Member] \| Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	166	169
Sierra Pacific Power Company [Member] \| Regulated Operation [Member] \| Fully bundled and distribution services only customer [Member] \| Regulated Gas [Member] \| Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 38	$ 47

Revenue from Contracts with _12

Revenue from Contracts with Customers - EEGH (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Revenue from External Customer [Line Items]
Total Customer Revenue	$ 4,712	$ 3,516
Operating revenue	6,081	4,527
Eastern Energy Gas Holdings, LLC [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	486	555
Operating revenue	486	556
Regulated Operation [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	4,094	3,213
Regulated Operation [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	296	347
Unregulated Operation [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	190	208
Regulated gas transportation and storage [Member] \| Regulated Operation [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	498	234
Regulated gas transportation and storage [Member] \| Regulated Operation [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	279	344
Regulated wholesale [Member] \| Regulated Operation [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	193	77
Regulated wholesale [Member] \| Regulated Operation [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	17	2
Regulated other [Member] \| Regulated Operation [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	25	27
Regulated other [Member] \| Regulated Operation [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Revenue from External Customer [Line Items]
Total Customer Revenue	0	1
Non-contracts with customer revenue [Member]
Revenue from External Customer [Line Items]
Operating revenue	137	118
Non-contracts with customer revenue [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Revenue from External Customer [Line Items]
Operating revenue	$ 0	$ 1

Revenue from Contracts with _13

Revenue from Contracts with Customers - EEGH - Remaining Performance Obligation (Details) $ in Millions	Mar. 31, 2021USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 23,952
Eastern Energy Gas Holdings, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	17,679
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 3,034
Performance obligations expected to be satisfied, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-04-01 \| Eastern Energy Gas Holdings, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 1,564
Performance obligations expected to be satisfied, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 20,918
Performance obligations expected to be satisfied, expected timing of satisfaction, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-04-01 \| Eastern Energy Gas Holdings, LLC [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 16,115
Performance obligations expected to be satisfied, expected timing of satisfaction, period

BHE Shareholders' Equity (Detai

BHE Shareholders' Equity (Details) $ in Millions	3 Months Ended
BHE Shareholders' Equity (Details) $ in Millions	Mar. 31, 2020USD ($)shares
Class of Stock [Line Items]
Stock Repurchased During Period, Value	$ 126
Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchased and Retired During Period, Shares \| shares	180,358
Stock Repurchased During Period, Value	$ 126

Components of Accumulated Oth_3

Components of Accumulated Other Comprehensive Loss, Net (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	$ 43,010
Other comprehensive income (loss)	112	$ (547)
Balance	43,089
Accumulated Other Comprehensive (Loss) Income, Net [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(1,552)	(1,706)
Other comprehensive income (loss)	112	(547)
Balance	(1,440)	(2,253)
Unrecognized Amounts On Retirement Benefits [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	482	417
Other comprehensive income (loss)	(7)	(34)
Balance	475	383
Foreign Currency Translation Adjustment [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(1,062)	(1,296)
Other comprehensive income (loss)	91	(548)
Balance	(971)	(1,844)
Unrealized Gains (Losses) On Cash Flow Hedges [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(8)	7
Other comprehensive income (loss)	14	(33)
Balance	$ 6	$ (26)

Components of Accumulated Oth_4

Components of Accumulated Other Comprehensive Loss, Net - EEGH (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ 46,977	$ 32,578
Other comprehensive income (loss)	112	(547)
Balance	47,051	32,572
Eastern Energy Gas Holdings, LLC [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	6,995	10,229
Other comprehensive income (loss)	12	(84)
Balance	7,078	10,078
Accumulated Other Comprehensive Loss [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive income (loss)	112	(547)
Accumulated Other Comprehensive Loss [Member] \| Eastern Energy Gas Holdings, LLC [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(53)	(187)
Other comprehensive income (loss)	8	(84)
Balance	(45)	(271)
Unrecognized Amounts On Retirement Benefits [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive income (loss)	(7)	(34)
Unrecognized Amounts On Retirement Benefits [Member] \| Eastern Energy Gas Holdings, LLC [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(12)	(106)
Other comprehensive income (loss)	2	1
Balance	(10)	(105)
Unrealized Gains (Losses) On Cash Flow Hedges [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Other comprehensive income (loss)	14	(33)
Unrealized Gains (Losses) On Cash Flow Hedges [Member] \| Eastern Energy Gas Holdings, LLC [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(51)	(81)
Other comprehensive income (loss)	10	(85)
Balance	(41)	(166)
AOCI Attributable to Noncontrolling Interest [Member] \| Eastern Energy Gas Holdings, LLC [Member]
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	10	0
Other comprehensive income (loss)	(4)	0
Balance	$ 6	$ 0

Segment Information (Details)

Segment Information (Details) $ in Millions		3 Months Ended
Segment Information (Details) $ in Millions		Mar. 31, 2021USD ($)OperatingSegments	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Operating revenue		$ 6,081	$ 4,527
Depreciation and amortization - energy operations		(915)	(809)
Depreciation and amortization		927	821
Operating income		1,333	919
Interest expense		530	483
Interest Costs Capitalized		14	17
Allowance for equity funds		26	34
Interest and dividend income		21	20
(Losses) gains on marketable securities, net		(1,118)	27
Other, net		8	(27)
Income before income tax expense and equity income		(246)	507
Net Income (Loss) Attributable to Parent		4	670
Undistributed Earnings (Loss) Available to Common Shareholders, Diluted		(34)	670
Assets		$ 127,522		$ 127,316
Number of reportable segments \| OperatingSegments		8
PacifiCorp [Member]
Segment Reporting Information [Line Items]
Operating revenue		$ 1,242	1,206
Depreciation and amortization - energy operations		(264)	(252)
Operating income		234	234
Interest expense		107	102
Net Income (Loss) Attributable to Parent		169	176
Assets		26,956		26,862
MidAmerican Funding [Member]
Segment Reporting Information [Line Items]
Operating revenue		1,067	686
Depreciation and amortization - energy operations		(207)	(176)
Operating income		48	102
Interest expense		78	81
Net Income (Loss) Attributable to Parent		144	150
Assets		24,098		23,530
NV Energy, Inc. [Member]
Segment Reporting Information [Line Items]
Operating revenue		591	622
Depreciation and amortization - energy operations		(136)	(124)
Operating income		70	79
Interest expense		52	58
Net Income (Loss) Attributable to Parent		34	20
Assets		14,594		14,501
Northern Powergrid Holdings [Member]
Segment Reporting Information [Line Items]
Operating revenue		300	266
Depreciation and amortization - energy operations		(71)	(63)
Operating income		151	132
Interest expense		33	32
Net Income (Loss) Attributable to Parent		104	87
Assets		8,980		8,782
BHE Pipeline Group [Member]
Segment Reporting Information [Line Items]
Operating revenue		1,093	401
Depreciation and amortization - energy operations		(118)	(64)
Operating income		618	249
Interest expense		38	14
Net Income (Loss) Attributable to Parent		383	179
Assets		19,651		19,541
BHE Transmission [Member]
Segment Reporting Information [Line Items]
Operating revenue		180	172
Depreciation and amortization - energy operations		(58)	(60)
Operating income		81	76
Interest expense		38	38
Net Income (Loss) Attributable to Parent		59	55
Assets		9,341		9,208
Berkshire Hathaway Energy Renewables [Member]
Segment Reporting Information [Line Items]
Operating revenue		190	178
Depreciation and amortization - energy operations		(60)	(71)
Operating income		33	17
Interest expense		40	42
Net Income (Loss) Attributable to Parent		16	95
Assets		11,935		12,004
HomeServices [Member]
Segment Reporting Information [Line Items]
Operating revenue		1,232	893
Depreciation and amortization		11	11
Operating income		112	20
Interest expense		1	5
Net Income (Loss) Attributable to Parent		84	10
Assets		5,186		4,955
Berkshire Hathaway Energy And Other [Member]
Segment Reporting Information [Line Items]
Operating revenue	[1],[2]	186	103
Depreciation and amortization - energy operations	[2]	(2)	0
Operating income	[2]	(14)	10
Interest expense	[2]	143	111
Net Income (Loss) Attributable to Parent		(1,027)	(102)
Assets	[2]	6,781		$ 7,933
UNITED STATES
Segment Reporting Information [Line Items]
Operating revenue		5,597	4,089
Income before income tax expense and equity income		(423)	354
UNITED KINGDOM
Segment Reporting Information [Line Items]
Operating revenue		300	266
Income before income tax expense and equity income		132	109
CANADA
Segment Reporting Information [Line Items]
Operating revenue		177	171
Income before income tax expense and equity income		39	40
The Philippines and other [Member]
Segment Reporting Information [Line Items]
Operating revenue		7	1
Income before income tax expense and equity income		$ 6	$ 4

[1]	The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations.
[2]	The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.

Segment Information - Goodwill

Segment Information - Goodwill (Details) $ in Millions	3 Months Ended
Segment Information - Goodwill (Details) $ in Millions	Mar. 31, 2021USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 11,506
Goodwill, Acquired During Period	1
Foreign currency translation	27
Ending balance	11,534
PacifiCorp [Member]
Goodwill [Roll Forward]
Beginning balance	1,129
Foreign currency translation	0
Ending balance	1,129
MidAmerican Funding [Member]
Goodwill [Roll Forward]
Beginning balance	2,102
Foreign currency translation	0
Ending balance	2,102
NV Energy, Inc. [Member]
Goodwill [Roll Forward]
Beginning balance	2,369
Foreign currency translation	0
Ending balance	2,369
Northern Powergrid Holdings [Member]
Goodwill [Roll Forward]
Beginning balance	1,000
Foreign currency translation	6
Ending balance	1,006
BHE Pipeline Group [Member]
Goodwill [Roll Forward]
Beginning balance	1,803
Foreign currency translation	0
Ending balance	1,803
BHE Transmission [Member]
Goodwill [Roll Forward]
Beginning balance	1,551
Foreign currency translation	21
Ending balance	1,572
Berkshire Hathaway Energy Renewables [Member]
Goodwill [Roll Forward]
Beginning balance	95
Foreign currency translation	0
Ending balance	95
HomeServices [Member]
Goodwill [Roll Forward]
Beginning balance	1,457
Goodwill, Acquired During Period	1
Foreign currency translation	0
Ending balance	$ 1,458

Segment Information Segment Inf

Segment Information Segment Information - MEC (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021USD ($)OperatingSegmentsReportableSegments	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| OperatingSegments	8
Operating revenue	$ 6,081	$ 4,527
Operating income	1,333	919
Interest expense	(530)	(483)
Allowance for borrowed funds	14	17
Allowance for equity funds	26	34
Other, net	8	(27)
Income before income tax (benefit) expense and equity income	(246)	507
Assets	$ 127,522		$ 127,316
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
Number of reportable segments \| ReportableSegments	2
Operating revenue	$ 1,067	681
Operating income	48	98
Interest expense	(74)	(76)
Allowance for borrowed funds	2	3
Allowance for equity funds	6	8
Other, net	11	(5)
Income before income tax (benefit) expense and equity income	(7)	28
Assets	22,000		21,437
MidAmerican Energy Company [Member] \| Electricity Us Regulated Member
Segment Reporting Information [Line Items]
Operating revenue	545	471
Operating income	9	59
Assets	20,272		19,892
MidAmerican Energy Company [Member] \| Natural Gas US Regulated Member
Segment Reporting Information [Line Items]
Operating revenue	512	209
Operating income	39	39
Assets	1,725		1,544
MidAmerican Energy Company [Member] \| Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenue	10	$ 1
Assets	$ 3		$ 1

Segment Information Segment I_2

Segment Information Segment Information - MidAmerican Funding (Details) $ in Millions		3 Months Ended
		Mar. 31, 2021USD ($)ReportableSegmentsOperatingSegments	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| OperatingSegments		8
Operating revenue		$ 6,081	$ 4,527
Operating income		1,333	919
Interest expense		(530)	(483)
Allowance for borrowed funds		14	17
Allowance for equity funds		26	34
Other, net		8	(27)
Income before income tax (benefit) expense and equity income		(246)	507
Assets		$ 127,522		$ 127,316
MidAmerican Funding, LLC and Subsidiaries [Member]
Segment Reporting Information [Line Items]
Number of reportable segments \| ReportableSegments		2
Operating revenue		$ 1,067	686
Operating income		48	102
Interest expense		(78)	(81)
Allowance for borrowed funds		2	3
Allowance for equity funds		6	8
Other, net		10	(6)
Income before income tax (benefit) expense and equity income		(12)	26
Assets	[1]	23,274		22,711
MidAmerican Funding, LLC and Subsidiaries [Member] \| Electricity Us Regulated Member
Segment Reporting Information [Line Items]
Operating revenue		545	471
Operating income		9	59
Assets	[1]	21,463		21,083
MidAmerican Funding, LLC and Subsidiaries [Member] \| Natural Gas US Regulated Member
Segment Reporting Information [Line Items]
Operating revenue		512	209
Operating income		39	39
Assets	[1]	1,804		1,623
MidAmerican Funding, LLC and Subsidiaries [Member] \| Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenue		10	6
Operating income		0	$ 4
Assets	[1]	$ 7		$ 5

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

Segment Information Segment I_3

Segment Information Segment Information - SPPC (Details) $ in Millions		3 Months Ended
		Mar. 31, 2021USD ($)OperatingSegmentsTheNumberOfReportableSegments	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments \| OperatingSegments		8
Operating revenue		$ 6,081	$ 4,527
Operating income		1,333	919
Interest expense		(530)	(483)
Allowance for equity funds		26	34
Other, net		8	(27)
Income before income tax expense and equity income		(246)	507
Assets		$ 127,522		$ 127,316
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
Number of reportable segments \| TheNumberOfReportableSegments		2
Operating revenue		$ 220	232
Operating income		39	40
Interest expense		(14)	(14)
Allowance for equity funds		1	1
Other, net		6	1
Income before income tax expense and equity income		32	28
Assets		3,963		3,919
Sierra Pacific Power Company [Member] \| Electricity Us Regulated Member
Segment Reporting Information [Line Items]
Regulated Operating Revenue		181	184
Operating income		31	33
Assets		3,589		3,540
Sierra Pacific Power Company [Member] \| Natural Gas US Regulated Member
Segment Reporting Information [Line Items]
Regulated Operating Revenue, Gas		39	48
Operating income		8	$ 7
Assets		348		342
Sierra Pacific Power Company [Member] \| Corporate and Other [Member]
Segment Reporting Information [Line Items]
Assets	[1]	$ 26		$ 37

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

Variable Interest Entities - EE

Variable Interest Entities - EEGH (Details) - USD ($) $ in Millions	1 Months Ended				3 Months Ended
	Nov. 30, 2020	Jul. 31, 2020	Dec. 31, 2019	Nov. 30, 2019	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Eastern Energy Gas Holdings, LLC [Member] \| Cove Point LNG, LP [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest					75.00%	25.00%
Percentage interest distributed		25.00%
Eastern Energy Gas Holdings, LLC [Member] \| General Partner [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Cove Point LNG, LP [Member]
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage					100.00%
Eastern Energy Gas Holdings, LLC [Member] \| Limited Partner [Member] \| Variable Interest Entity, Primary Beneficiary [Member] \| Cove Point LNG, LP [Member]
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage					25.00%
Eastern Energy Gas Holdings, LLC [Member] \| Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] \| GT&S Transaction [Member] \| Cove Point LNG, LP [Member]
Schedule of Equity Method Investments [Line Items]
Percentage interest distributed	50.00%
Eastern Energy Gas Holdings, LLC [Member] \| Cove Point LNG, LP [Member] \| Dominion Energy, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest				75.00%
Eastern Energy Gas Holdings, LLC [Member] \| Cove Point LNG, LP [Member] \| Disposal Group, Disposed of by Means Other than Sale, Not Discontinued Operations [Member] \| GT&S Transaction [Member]
Schedule of Equity Method Investments [Line Items]
Percentage interest distributed	50.00%
Eastern Energy Gas Holdings, LLC [Member] \| Carolina Gas Services, Inc. [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Equity Method Investments [Line Items]
Due to related parties					$ 26		$ 22
Eastern Energy Gas Holdings, LLC [Member] \| Carolina Gas Services, Inc. [Member] \| Shared Services [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Equity Method Investments [Line Items]
Amounts of transaction					$ 3	$ 4
Eastern Energy Gas Holdings, LLC [Member] \| Dominion Energy Questar Pipeline Services, Inc. [Member] \| Shared Services [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Equity Method Investments [Line Items]
Amounts of transaction						7
Eastern Energy Gas Holdings, LLC [Member] \| Dominion Energy Services, Inc. [Member] \| Shared Services [Member] \| Variable Interest Entity, Not Primary Beneficiary [Member]
Schedule of Equity Method Investments [Line Items]
Amounts of transaction						$ 31
Dominion Energy, Inc. [Member] \| Cove Point LNG, LP [Member]
Schedule of Equity Method Investments [Line Items]
Sold noncontrolling partner interest			25.00%

Related Party Transactions - EE

Related Party Transactions - EEGH - Significant Transactions (Details) - USD ($) $ in Millions		3 Months Ended		12 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2018
Related Party Transaction [Line Items]
Capitalized expenditures		$ 1,295	$ 1,356
Eastern Energy Gas Holdings, LLC [Member]
Related Party Transaction [Line Items]
Capitalized expenditures		$ 55	76
Eastern Energy Gas Holdings, LLC [Member] \| Affiliated Entity [Member]
Related Party Transaction [Line Items]
Sales of natural gas and transportation and storage services			64
Purchases of natural gas and transportation and storage services / Services provided to related parties			3	$ 32
Services provided by related parties	[1]		43
Capitalized expenditures			$ 3

[1]	Includes capitalized expenditures of $3 million.

Related Party Transactions - _2

Related Party Transactions - EEGH - Narrative (Details) - USD ($)		3 Months Ended		12 Months Ended
		Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Feb. 28, 2021
Eastern Energy Gas Holdings, LLC [Member]
Related Party Transaction [Line Items]
Payments for distributions to affiliates		$ 109,000,000	$ 269,000,000
Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related parties	[1]		43,000,000
Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Administrative And Technical Services [Member]
Related Party Transaction [Line Items]
Amounts of transaction		9,000,000
Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Transportation And Storage Services [Member]
Related Party Transaction [Line Items]
Amounts of transaction		7,000,000
Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Other Assets Due From Affiliates [Member]
Related Party Transaction [Line Items]
Amounts of transaction		6,000,000		$ 7,000,000
Dominion Energy, Inc. [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member]
Related Party Transaction [Line Items]
Payments for distributions to affiliates			37,000,000
Dominion Energy, Inc. [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Notes Receivable [Member]
Related Party Transaction [Line Items]
Interest income related to affiliated notes receivable			11,000,000
East Ohio [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Notes Receivable [Member]
Related Party Transaction [Line Items]
Interest income related to affiliated notes receivable			$ 18,000,000
Berkshire Hathaway Energy [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Tax Receivable [Member]
Related Party Transaction [Line Items]
Due from affiliates		21,000,000		20,000,000
DEI, BHE, MidAmerican Energy, Northern Natural Gas and Other Related Parties [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Administrative And Technical Services [Member]
Related Party Transaction [Line Items]
Expenses from transactions with related parties		7,000,000
BHE GT&S, LLC [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Intercompany Revolving Credit Agreement With BHE GT&S [Member]
Related Party Transaction [Line Items]
Maximum borrowing capacity		400,000,000
BHE GT&S, LLC [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Intercompany Revolving Credit Agreement With BHE GT&S [Member] \| Line of Credit [Member]
Related Party Transaction [Line Items]
Long-term line of credit		0		9,000,000
Eastern Energy Gas Holdings, LLC [Member] \| Affiliated Entity [Member] \| BHE GT&S, LLC [Member] \| BHE GT&S and Eastern Energy Intercompany Revolving Credit Agreement [Member]
Related Party Transaction [Line Items]
Long-term line of credit		234,000,000		124,000,000
Face amount		400,000,000			$ 200,000,000
MidAmerican Energy Company [Member] \| Affiliated Entity [Member] \| Eastern Energy Gas Holdings, LLC [Member] \| Shared Benefit Plan [Member]
Related Party Transaction [Line Items]
Due to related parties, noncurrent		$ 110,000,000		$ 115,000,000

[1]	Includes capitalized expenditures of $3 million.