PacifiCorp (PPWLO) 10-Q 8 Nov 21 2021 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2021	Nov. 04, 2021
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 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, 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	Q3
Entity Central Index Key	0001081316
Current Fiscal Year End Date	--12-31
PAC
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, Address Line Two	Suite 1900
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
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, 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
MEC
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, 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
NPC
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
SPPC
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
EEGH
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 (Un

Consolidated Balance Sheets (Unaudited) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Trade receivables, net	2,545	2,107
Inventories	1,129	1,168
Mortgage loans held for sale	1,687	2,001
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Property, plant and equipment, net	88,062	86,128
Goodwill	11,572	11,506
Regulatory assets	3,372	3,157
Investments and restricted cash and cash equivalents and investments	15,218	14,320
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Accrued employee expenses	556	383
Short-term debt	1,968	2,286
Current portion of long-term debt	1,179	1,839
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
BHE senior debt	13,001	12,997
BHE junior subordinated debentures	100	100
Subsidiary debt	35,818	34,930
Regulatory liabilities	6,958	7,221
Deferred income taxes	12,910	11,775
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
BHE shareholders' equity:
Preferred stock	2,300	3,750
Common stock	0	0
Additional paid-in capital	6,374	6,377
Long-term income tax receivable	(658)	(658)
Retained earnings	39,199	35,093
Accumulated other comprehensive loss, net	(1,523)	(1,552)
Total shareholder's equity, parent	45,692	43,010
Noncontrolling interests	3,924	3,967
Total equity	49,616	46,977
Total liabilities and equity	$ 131,554	$ 127,316

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares shares in Millions	Sep. 30, 2021	Dec. 31, 2020
Statement of Financial Position [Abstract]
Preferred stock, shares authorized	100	100
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued	2	4
Preferred stock, shares outstanding	2	4
Common stock, shares authorized	115	115
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	76	76
Common stock, shares outstanding	76	76

Consolidated Balance Sheets (_3

Consolidated Balance Sheets (Unaudited) - PAC - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Inventories	1,129	1,168
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Regulatory assets	3,372	3,157
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Accrued employee expenses	556	383
Short-term debt	1,968	2,286
Current portion of long-term debt	1,179	1,839
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
Regulatory liabilities	6,958	7,221
Deferred income taxes	12,910	11,775
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
Equity:
Preferred stock	2,300	3,750
Common stock	0	0
Additional paid-in capital	6,374	6,377
Retained earnings	39,199	35,093
Accumulated other comprehensive loss, net	(1,523)	(1,552)
Total shareholder's equity, parent	45,692	43,010
Total liabilities and equity	131,554	127,316
PAC
Current assets:
Cash and cash equivalents	893	13
Trade receivables, net	732	703
Other receivables	41	48
Inventories	465	482
Derivative contracts	153	27
Regulatory assets	70	116
Prepaid expenses	89	79
Other current assets	24	55
Total current assets	2,467	1,523
Property, plant and equipment, net	22,748	22,430
Regulatory assets	1,326	1,279
Other assets	530	470
Total assets	27,071	25,702
Current liabilities:
Accounts payable	624	772
Accrued interest	115	127
Accrued property, income and other taxes	159	80
Accrued employee expenses	117	84
Short-term debt	0	93
Current portion of long-term debt	574	420
Regulatory liabilities	112	115
Other current liabilities	241	174
Total current liabilities	1,942	1,865
Long-term debt	8,625	8,192
Regulatory liabilities	2,759	2,727
Deferred income taxes	2,781	2,627
Other long-term liabilities	1,064	1,118
Total liabilities	17,171	16,529
Commitments and contingencies
Equity:
Preferred stock	2	2
Common stock	0	0
Additional paid-in capital	4,479	4,479
Retained earnings	5,437	4,711
Accumulated other comprehensive loss, net	(18)	(19)
Total shareholder's equity, parent	9,900	9,173
Total liabilities and equity	$ 27,071	$ 25,702

Consolidated Balance Sheets (_4

Consolidated Balance Sheets (Unaudited) - PAC (Parenthetical) - $ / shares shares in Millions	Sep. 30, 2021	Dec. 31, 2020
Preferred stock, shares authorized	100	100
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued	2	4
Preferred stock, shares outstanding	2	4
Common stock, shares authorized	115	115
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	76	76
Common stock, shares outstanding	76	76
PAC
Common stock, shares authorized	750	750
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	357	357
Common stock, shares outstanding	357	357

Balance Sheets (Unaudited) - ME

Balance Sheets (Unaudited) - MEC - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Inventories	1,129	1,168
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Regulatory assets	3,372	3,157
Investments and restricted cash and cash equivalents and investments	15,218	14,320
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
Regulatory liabilities	6,958	7,221
Deferred income taxes	12,910	11,775
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,374	6,377
Retained earnings	39,199	35,093
Total shareholder's equity, parent	45,692	43,010
Total liabilities and equity	131,554	127,316
MEC
Current assets:
Cash and cash equivalents	541	38
Trade receivables, net	555	234
Inventories	244	278
Other current assets	142	73
Total current assets	1,482	623
Property, plant and equipment, net	19,773	19,279
Regulatory assets	479	392
Investments and restricted cash and cash equivalents and investments	975	911
Other assets	235	232
Total assets	22,944	21,437
Current liabilities:
Accounts payable	347	408
Accrued interest	89	78
Accrued property, income and other taxes	242	161
Other current liabilities	226	183
Total current liabilities	904	830
Long-term debt	7,716	7,210
Regulatory liabilities	943	1,111
Deferred income taxes	3,407	3,054
Asset retirement obligations	677	709
Other long-term liabilities	495	458
Total liabilities	14,142	13,372
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	561	561
Retained earnings	8,241	7,504
Total shareholder's equity, parent	8,802	8,065
Total liabilities and equity	$ 22,944	$ 21,437

Balance Sheets (Unaudited) - _2

Balance Sheets (Unaudited) - MEC (Parenthetical) - $ / shares shares in Millions	Sep. 30, 2021	Dec. 31, 2020
Preferred stock, shares authorized	100	100
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued	2	4
Preferred stock, shares outstanding	2	4
Common stock, shares authorized	115	115
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	76	76
Common stock, shares outstanding	76	76
MEC
Common stock, shares authorized	350	350
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	71	71
Common stock, shares outstanding	71	71

Consolidated Balance Sheets (_5

Consolidated Balance Sheets (Unaudited) - MidAmerican Funding LLC - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Inventories	1,129	1,168
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Property, plant and equipment, net	88,062	86,128
Goodwill	11,572	11,506
Regulatory assets	3,372	3,157
Investments and restricted cash and cash equivalents and investments	15,218	14,320
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
Regulatory liabilities	6,958	7,221
Deferred income taxes	12,910	11,775
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
Equity:
Additional paid-in capital	6,374	6,377
Retained earnings	39,199	35,093
Total shareholder's equity, parent	45,692	43,010
Total liabilities and equity	131,554	127,316
MidAmerican Funding, LLC
Current assets:
Cash and cash equivalents	542	39
Trade receivables, net	555	234
Inventories	244	278
Other current assets	143	74
Total current assets	1,484	625
Property, plant and equipment, net	19,774	19,279
Goodwill	1,270	1,270
Regulatory assets	479	392
Investments and restricted cash and cash equivalents and investments	977	913
Other assets	234	232
Total assets	24,218	22,711
Current liabilities:
Accounts payable	347	408
Accrued interest	90	83
Accrued property, income and other taxes	242	161
Notes payable	190	177
Other current liabilities	226	183
Total current liabilities	1,095	1,012
Long-term debt	7,956	7,450
Regulatory liabilities	943	1,111
Deferred income taxes	3,405	3,052
Asset retirement obligations	677	709
Other long-term liabilities	495	458
Total liabilities	14,571	13,792
Commitments and contingencies
Equity:
Additional paid-in capital	1,679	1,679
Retained earnings	7,968	7,240
Total shareholder's equity, parent	9,647	8,919
Total liabilities and equity	$ 24,218	$ 22,711

Consolidated Balance Sheets (_6

Consolidated Balance Sheets (Unaudited) - NPC - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Inventories	1,129	1,168
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Regulatory assets	3,372	3,157
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
Regulatory liabilities	6,958	7,221
Deferred income taxes	12,910	11,775
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,374	6,377
Retained earnings	39,199	35,093
Accumulated other comprehensive loss, net	(1,523)	(1,552)
Total shareholder's equity, parent	45,692	43,010
Total liabilities and equity	131,554	127,316
NPC
Current assets:
Cash and cash equivalents	85	25
Trade receivables, net	353	234
Inventories	66	69
Derivative contracts	3	26
Regulatory assets	217	48
Prepayments	37	38
Other current assets	36	26
Total current assets	797	466
Property, plant and equipment, net	6,829	6,701
Finance lease right of use assets, net	330	351
Regulatory assets	686	746
Other assets	73	72
Total assets	8,715	8,336
Current liabilities:
Accounts payable	249	181
Accrued interest	38	32
Accrued property, income and other taxes	60	25
Current portion of finance lease obligations	26	27
Regulatory liabilities	54	50
Customer deposits	44	47
Asset retirement obligation	16	25
Other current liabilities	38	22
Total current liabilities	525	409
Long-term debt	2,498	2,496
Finance lease obligations	313	334
Regulatory liabilities	1,118	1,163
Deferred income taxes	753	738
Other long-term liabilities	281	257
Total liabilities	5,488	5,397
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	2,308	2,308
Retained earnings	922	634
Accumulated other comprehensive loss, net	(3)	(3)
Total shareholder's equity, parent	3,227	2,939
Total liabilities and equity	$ 8,715	$ 8,336

Consolidated Balance Sheets (_7

Consolidated Balance Sheets (Unaudited) - NPC (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued	2,000,000	4,000,000
Preferred stock, shares outstanding	2,000,000	4,000,000
Common stock, shares authorized	115,000,000	115,000,000
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	76,000,000	76,000,000
Common stock, shares outstanding	76,000,000	76,000,000
NPC
Common stock, par value (in dollars 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 (_8

Consolidated Balance Sheets (Unaudited) - SPPC - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Inventories	1,129	1,168
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Regulatory assets	3,372	3,157
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Short-term debt	1,968	2,286
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
Regulatory liabilities	6,958	7,221
Deferred income taxes	12,910	11,775
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,374	6,377
Retained earnings	39,199	35,093
Accumulated other comprehensive loss, net	(1,523)	(1,552)
Total shareholder's equity, parent	45,692	43,010
Total liabilities and equity	131,554	127,316
SPPC
Current assets:
Cash and cash equivalents	14	19
Trade receivables, net	118	97
Inventories	68	77
Regulatory assets	168	67
Other current assets	48	45
Total current assets	416	305
Property, plant and equipment, net	3,265	3,164
Regulatory assets	265	267
Other assets	184	183
Total assets	4,130	3,919
Current liabilities:
Accounts payable	121	108
Accrued interest	11	14
Accrued property, income and other taxes	18	14
Short-term debt	127	45
Regulatory liabilities	23	34
Customer deposits	15	15
Other current liabilities	31	25
Total current liabilities	346	255
Long-term debt, carrying value	1,164	1,164
Finance lease obligations	116	121
Regulatory liabilities	446	463
Deferred income taxes	396	374
Other long-term liabilities	144	131
Total liabilities	2,612	2,508
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	1,111	1,111
Retained earnings	408	301
Accumulated other comprehensive loss, net	(1)	(1)
Total shareholder's equity, parent	1,518	1,411
Total liabilities and equity	$ 4,130	$ 3,919

Consolidated Balance Sheets (_9

Consolidated Balance Sheets (Unaudited) -SPPC (Parenthetical) - $ / shares	Sep. 30, 2021	Dec. 31, 2020
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, par value (in dollars per share)	$ 0.01	$ 0.01
Preferred stock, shares issued	2,000,000	4,000,000
Preferred stock, shares outstanding	2,000,000	4,000,000
Common stock, shares authorized	115,000,000	115,000,000
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued	76,000,000	76,000,000
Common stock, shares outstanding	76,000,000	76,000,000
SPPC
Common stock, par value (in dollars 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 _10

Consolidated Balance Sheets (Unaudited) - EEGH - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Trade receivables, net	2,545	2,107
Inventories	1,129	1,168
Other current assets	2,142	2,741
Total current assets	10,428	9,447
Property, plant and equipment, net	88,062	86,128
Goodwill	11,572	11,506
Investments	15,218	14,320
Other assets	2,902	2,758
Total assets	131,554	127,316
Current liabilities:
Accounts payable	1,798	1,867
Accrued interest	622	555
Accrued property, income and other taxes	670	582
Current portion of long-term debt	1,179	1,839
Other current liabilities	2,054	1,626
Total current liabilities	8,847	9,138
Regulatory liabilities	6,958	7,221
Other long-term liabilities	4,304	4,178
Total liabilities	81,938	80,339
Commitments and contingencies
Member's equity:
Accumulated other comprehensive loss, net	(1,523)	(1,552)
Total liabilities and equity	131,554	127,316
EEGH
Current assets:
Cash and cash equivalents	90	35
Restricted cash and cash equivalents	17	13
Trade receivables, net	143	177
Receivables from affiliates	70	139
Income tax receivable	52	20
Other receivables	7	51
Inventories	127	119
Prepayments	90	60
Natural gas imbalances	69	26
Other current assets	19	16
Total current assets	684	656
Property, plant and equipment, net	10,195	10,144
Goodwill	1,286	1,286
Investments	259	244
Other assets	167	291
Total assets	12,591	12,621
Current liabilities:
Accounts payable	71	71
Accounts payable to affiliates	35	39
Accrued interest	49	19
Accrued property, income and other taxes	73	29
Notes payable	0	9
Current portion of long-term debt	0	500
Other current liabilities	178	147
Total current liabilities	406	814
Long-term debt	3,910	3,925
Regulatory liabilities	646	669
Other long-term liabilities	239	218
Total liabilities	5,201	5,626
Commitments and contingencies
Member's equity:
Membership interests	3,388	2,957
Accumulated other comprehensive loss, net	(42)	(53)
Total member's equity	3,346	2,904
Noncontrolling interests	4,044	4,091
Total equity	7,390	6,995
Total liabilities and equity	$ 12,591	$ 12,621

Consolidated Statements of Oper

Consolidated Statements of Operations (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating revenue:
Total operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Energy:
Cost of sales	1,385	1,169	4,064	3,095
Operations and maintenance	1,001	1,033	2,972	2,564
Depreciation and amortization	946	789	2,797	2,323
Property and other taxes	194	152	593	456
Real estate	1,608	1,503	4,312	3,492
Total operating expenses	5,134	4,646	14,738	11,930
Operating income	1,834	1,547	4,375	3,402
Other income (expense):
Interest expense	(531)	(504)	(1,593)	(1,490)
Capitalized interest	18	24	46	60
Allowance for equity funds	34	50	90	122
Interest and dividend income	18	17	65	57
Gains on marketable securities, net	294	1,797	1,142	2,407
Other, net	8	36	64	61
Total other income (expense)	(159)	1,420	(186)	1,217
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Income tax (benefit) expense	(355)	80	(563)	(111)
Equity loss	(5)	(41)	(234)	(91)
Net income	2,025	2,846	4,518	4,639
Net income attributable to noncontrolling interests	103	4	311	11
Net income (loss) attributable to parent	1,922	2,842	4,207	4,628
Preferred dividends	26	0	101	0
Earnings on common shares	1,896	2,842	4,106	4,628
Energy
Operating revenue:
Total operating revenue	5,225	4,451	14,375	11,504
Real estate
Operating revenue:
Total operating revenue	$ 1,743	$ 1,742	$ 4,738	$ 3,828

Consolidated Statements of Op_2

Consolidated Statements of Operations (Unaudited) - PAC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating expenses:
Cost of sales	1,385	1,169	4,064	3,095
Operating income	1,834	1,547	4,375	3,402
Other income (expense):
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for borrowed funds	18	24	46	60
Allowance for equity funds	34	50	90	122
Interest and dividend income	18	17	65	57
Other, net	8	36	64	61
Total other income (expense)	(159)	1,420	(186)	1,217
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Income tax (benefit) expense	(355)	80	(563)	(111)
Net income (loss) attributable to parent	1,922	2,842	4,207	4,628
PAC
Operating revenue	1,491	1,479	4,031	3,829
Operating expenses:
Cost of sales	505	499	1,370	1,299
Operations and maintenance	267	332	781	829
Depreciation and amortization	272	234	811	696
Property and other taxes	54	53	158	154
Total operating expenses	1,098	1,118	3,120	2,978
Operating income	393	361	911	851
Other income (expense):
Interest expense	(110)	(107)	(322)	(319)
Allowance for borrowed funds	6	14	18	36
Allowance for equity funds	13	29	38	73
Interest and dividend income	7	2	18	8
Other, net	(5)	5	5	9
Total other income (expense)	(89)	(57)	(243)	(193)
Income (loss) before income tax expense (benefit) and equity income (loss)	304	304	668	658
Income tax (benefit) expense	(28)	18	(58)	30
Net income (loss) attributable to parent	$ 332	$ 286	$ 726	$ 628

Statements of Operations (Unaud

Statements of Operations (Unaudited) - MEC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating revenue:
Total operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating expenses:
Cost of sales	1,385	1,169	4,064	3,095
Total operating expenses	5,134	4,646	14,738	11,930
Operating income	1,834	1,547	4,375	3,402
Other income (expense):
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for equity funds	34	50	90	122
Other, net	8	36	64	61
Total other income (expense)	(159)	1,420	(186)	1,217
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Income tax (benefit) expense	(355)	80	(563)	(111)
Net income (loss) attributable to parent	1,922	2,842	4,207	4,628
MEC
Operating revenue:
Total operating revenue	966	812	2,726	2,106
Operating expenses:
Operations and maintenance	200	212	577	559
Depreciation and amortization	218	180	634	531
Property and other taxes	34	33	107	102
Total operating expenses	679	580	2,288	1,668
Operating income	287	232	438	438
Other income (expense):
Interest expense	(76)	(74)	(224)	(224)
Allowance for borrowed funds	4	5	8	12
Allowance for equity funds	11	16	25	33
Other, net	8	14	34	30
Total other income (expense)	(53)	(39)	(157)	(149)
Income (loss) before income tax expense (benefit) and equity income (loss)	234	193	281	289
Income tax (benefit) expense	(143)	(147)	(456)	(411)
Net income (loss) attributable to parent	377	340	737	700
Regulated electric | MEC
Operating revenue:
Total operating revenue	854	728	1,985	1,717
Operating expenses:
Cost of sales	163	115	417	266
Regulated natural gas and other | MEC
Operating revenue:
Total operating revenue	112	84	741	389
Operating expenses:
Cost of sales	$ 64	$ 40	$ 553	$ 210

Consolidated Statements of Op_3

Consolidated Statements of Operations (Unaudited) - MidAmerican Funding LLC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating revenue:
Total operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating expenses:
Cost of sales	1,385	1,169	4,064	3,095
Total operating expenses	5,134	4,646	14,738	11,930
Operating income	1,834	1,547	4,375	3,402
Other income (expense):
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for equity funds	34	50	90	122
Other, net	8	36	64	61
Total other income (expense)	(159)	1,420	(186)	1,217
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Income tax (benefit) expense	(355)	80	(563)	(111)
Net income (loss) attributable to parent	1,922	2,842	4,207	4,628
MidAmerican Funding, LLC
Operating revenue:
Total operating revenue	966	812	2,726	2,114
Operating expenses:
Operations and maintenance	200	212	577	560
Depreciation and amortization	218	180	634	531
Property and other taxes	34	33	107	102
Total operating expenses	679	580	2,288	1,670
Operating income	287	232	438	444
Other income (expense):
Interest expense	(81)	(79)	(237)	(238)
Allowance for borrowed funds	4	5	8	12
Allowance for equity funds	11	16	25	33
Other, net	8	15	34	30
Total other income (expense)	(58)	(43)	(170)	(163)
Income (loss) before income tax expense (benefit) and equity income (loss)	229	189	268	281
Income tax (benefit) expense	(144)	(148)	(460)	(414)
Net income (loss) attributable to parent	373	337	728	695
Regulated electric | MidAmerican Funding, LLC
Operating revenue:
Total operating revenue	854	728	1,985	1,717
Operating expenses:
Cost of sales	163	115	417	266
Regulated natural gas and other | MidAmerican Funding, LLC
Operating revenue:
Total operating revenue	112	84	741	397
Operating expenses:
Cost of sales	$ 64	$ 40	$ 553	$ 211

Consolidated Statements of Op_4

Consolidated Statements of Operations (Unaudited) - NPC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating expenses:
Cost of sales	1,385	1,169	4,064	3,095
Total operating expenses	5,134	4,646	14,738	11,930
Operating income	1,834	1,547	4,375	3,402
Other income (expense):
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for borrowed funds	18	24	46	60
Allowance for equity funds	34	50	90	122
Interest and dividend income	18	17	65	57
Other, net	8	36	64	61
Total other income (expense)	(159)	1,420	(186)	1,217
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Income tax (benefit) expense	(355)	80	(563)	(111)
Net income (loss) attributable to parent	1,922	2,842	4,207	4,628
NPC
Operating revenue	802	808	1,731	1,706
Operating expenses:
Cost of sales	328	287	745	654
Operations and maintenance	88	139	228	295
Depreciation and amortization	103	92	304	273
Property and other taxes	12	12	36	35
Total operating expenses	531	530	1,313	1,257
Operating income	271	278	418	449
Other income (expense):
Interest expense	(38)	(40)	(115)	(122)
Allowance for borrowed funds	0	1	2	3
Allowance for equity funds	2	1	5	5
Interest and dividend income	5	3	13	8
Other, net	4	3	14	4
Total other income (expense)	(27)	(32)	(81)	(102)
Income (loss) before income tax expense (benefit) and equity income (loss)	244	246	337	347
Income tax (benefit) expense	27	52	36	74
Net income (loss) attributable to parent	$ 217	$ 194	$ 301	$ 273

Consolidated Statements of Op_5

Consolidated Statements of Operations (Unaudited) - SPPC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Total operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Cost of sales	1,385	1,169	4,064	3,095
Total operating expenses	5,134	4,646	14,738	11,930
Operating income	1,834	1,547	4,375	3,402
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for equity funds	34	50	90	122
Interest and dividend income	18	17	65	57
Other, net	8	36	64	61
Total other income (expense)	(159)	1,420	(186)	1,217
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Income tax (benefit) expense	(355)	80	(563)	(111)
Net income (loss) attributable to parent	1,922	2,842	4,207	4,628
SPPC
Total operating revenue	282	235	711	652
Operations and maintenance	40	40	117	123
Depreciation and amortization	35	36	107	104
Property and other taxes	6	6	18	17
Total operating expenses	207	167	572	521
Operating income	75	68	139	131
Interest expense	(14)	(14)	(41)	(42)
Capitalized interest	1	0	2	1
Allowance for equity funds	2	1	5	3
Interest and dividend income	3	1	6	3
Other, net	3	2	9	4
Total other income (expense)	(5)	(10)	(19)	(31)
Income (loss) before income tax expense (benefit) and equity income (loss)	70	58	120	100
Income tax (benefit) expense	8	6	13	10
Net income (loss) attributable to parent	62	52	107	90
SPPC | Regulated electric
Total operating revenue	266	220	636	569
Cost of sales	120	81	295	233
SPPC | Regulated natural gas
Total operating revenue	16	15	75	83
Cost of sales	$ 6	$ 4	$ 35	$ 44

Consolidated Statements of Op_6

Consolidated Statements of Operations (Unaudited) - EEGH - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating expenses:
Total operating expenses	5,134	4,646	14,738	11,930
Operating income	1,834	1,547	4,375	3,402
Other income (expense):
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for equity funds	34	50	90	122
Interest and dividend income	18	17	65	57
Other, net	8	36	64	61
Total other income (expense)	(159)	1,420	(186)	1,217
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Income tax (benefit) expense	(355)	80	(563)	(111)
Equity income (loss)	(5)	(41)	(234)	(91)
Net income	2,025	2,846	4,518	4,639
Net income attributable to noncontrolling interests	103	4	311	11
Net income (loss) attributable to parent	1,922	2,842	4,207	4,628
EEGH
Operating revenue	456	531	1,379	1,597
Operating expenses:
(Excess) cost of gas	(3)	14	(13)	23
Operations and maintenance	125	119	362	922
Depreciation and amortization	83	95	244	282
Property and other taxes	38	38	115	109
Total operating expenses	243	266	708	1,336
Operating income	213	265	671	261
Other income (expense):
Interest expense	(32)	(186)	(118)	(294)
Allowance for equity funds	2	1	5	11
Interest and dividend income	0	10	0	67
Other, net	(1)	11	1	39
Total other income (expense)	(31)	(164)	(112)	(177)
Income (loss) before income tax expense (benefit) and equity income (loss)	182	101	559	84
Income tax (benefit) expense	21	(10)	70	(40)
Equity income (loss)	8	7	31	30
Net income	169	118	520	154
Net income attributable to noncontrolling interests	100	32	302	97
Net income (loss) attributable to parent	$ 69	$ 86	$ 218	$ 57

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income (Unaudited) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 2,025	$ 2,846	$ 4,518	$ 4,639
Other comprehensive (loss) income, net of tax:
Unrecognized amounts on retirement benefits, net of tax	22	(6)	44	38
Foreign currency translation adjustment	(218)	244	(59)	(195)
Unrealized gains (losses) on cash flow hedges, net of tax	33	4	48	(20)
Total other comprehensive (loss) income, net of tax	(163)	242	33	(177)
Comprehensive income	1,862	3,088	4,551	4,462
Comprehensive income attributable to noncontrolling interests	103	4	315	11
Comprehensive income (loss) attributable to parent	$ 1,759	$ 3,084	$ 4,236	$ 4,451

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Unaudited) (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Unrecognized amounts on retirement benefits, tax	$ 7	$ (3)	$ 12	$ 10
Unrealized gains (losses) on cash flow hedges, tax	12	2	16	(5)
EEGH
Unrecognized amounts on retirement benefits, tax	0	(1)	0	0
Unrealized gains (losses) on cash flow hedges, tax	$ (1)	$ 37	$ 2	$ 8

Consolidated Statements of Co_3

Consolidated Statements of Comprehensive Income (Unaudited) - EEGH - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Net income	$ 2,025	$ 2,846	$ 4,518	$ 4,639
Other comprehensive (loss) income, net of tax:
Unrecognized amounts on retirement benefits, net of tax	22	(6)	44	38
Unrealized gains (losses) on cash flow hedges, net of tax	33	4	48	(20)
Total other comprehensive (loss) income, net of tax	(163)	242	33	(177)
Comprehensive income	1,862	3,088	4,551	4,462
Comprehensive income attributable to noncontrolling interests	103	4	315	11
Comprehensive income (loss) attributable to parent	1,759	3,084	4,236	4,451
EEGH
Net income	169	118	520	154
Other comprehensive (loss) income, net of tax:
Unrecognized amounts on retirement benefits, net of tax	0	(4)	4	(1)
Unrealized gains (losses) on cash flow hedges, net of tax	(2)	111	11	24
Total other comprehensive (loss) income, net of tax	(2)	107	15	23
Comprehensive income	167	225	535	177
Comprehensive income attributable to noncontrolling interests	100	32	306	97
Comprehensive income (loss) attributable to parent	$ 67	$ 193	$ 229	$ 80

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity (Unaudited) - USD ($) $ in Millions	Total	Preferred Stock	Common Stock	Additional Paid-in Capital	Long-term Income Tax Receivable	Retained Earnings	Accumulated Other Comprehensive (Loss) Income, Net	Noncontrolling Interest
Balance at Dec. 31, 2019	$ 32,578	$ 0	$ 0	$ 6,389	$ (530)	$ 28,296	$ (1,706)	$ 129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	4,638					4,628		10
Other comprehensive income (loss)	(177)						(177)
Preferred stock dividend	0
Common stock purchases	(126)			(6)		(120)
Distributions to noncontrolling interests	(11)							(11)
Purchase of noncontrolling interest	(33)			(5)				(28)
Other equity transactions	0			(1)				1
Balance at Sep. 30, 2020	36,869	0	0	6,377	(530)	32,804	(1,883)	101
Balance at Jun. 30, 2020	33,785	0	0	6,377	(530)	29,962	(2,125)	101
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	2,845					2,842		3
Other comprehensive income (loss)	242						242
Preferred stock dividend	0
Distributions to noncontrolling interests	(4)							(4)
Other equity transactions	1							1
Balance at Sep. 30, 2020	36,869	0	0	6,377	(530)	32,804	(1,883)	101
Balance at Dec. 31, 2020	46,977	3,750	0	6,377	(658)	35,093	(1,552)	3,967
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	4,518					4,207		311
Other comprehensive income (loss)	33						29	4
Preferred stock redemptions	(1,450)	(1,450)
Preferred stock dividend	(101)					(101)
Distributions to noncontrolling interests	(364)							(364)
Contributions	9							9
Purchase of noncontrolling interest	(3)			(3)
Other equity transactions	(3)							(3)
Balance at Sep. 30, 2021	49,616	2,300	0	6,374	(658)	39,199	(1,523)	3,924
Balance at Jun. 30, 2021	49,365	3,750	0	6,377	(658)	37,303	(1,360)	3,953
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	2,025					1,922		103
Other comprehensive income (loss)	(163)						(163)
Preferred stock redemptions	(1,450)	(1,450)
Preferred stock dividend	(26)					(26)
Distributions to noncontrolling interests	(130)							(130)
Purchase of noncontrolling interest	(3)			(3)
Other equity transactions	(2)							(2)
Balance at Sep. 30, 2021	$ 49,616	$ 2,300	$ 0	$ 6,374	$ (658)	$ 39,199	$ (1,523)	$ 3,924

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity (Unaudited) - PAC - USD ($) $ in Millions	Total	Accumulated Other Comprehensive (Loss) Income, Net	PAC	PACPreferred Stock	PACCommon Stock	PACAdditional Paid-in Capital	PACRetained Earnings	PACAccumulated Other Comprehensive (Loss) Income, Net
Balance at Dec. 31, 2019			$ 8,437	$ 2	$ 0	$ 4,479	$ 3,972	$ (16)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 4,628		628				628
Other comprehensive income (loss)	(177)	$ (177)	1					1
Balance at Sep. 30, 2020			9,066	2	0	4,479	4,600	(15)
Balance at Jun. 30, 2020			8,780	2	0	4,479	4,314	(15)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,842		286				286
Other comprehensive income (loss)	242	242
Balance at Sep. 30, 2020			9,066	2	0	4,479	4,600	(15)
Balance at Dec. 31, 2020	43,010		9,173	2	0	4,479	4,711	(19)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,207		726				726
Other comprehensive income (loss)	33	29	1					1
Balance at Sep. 30, 2021	45,692		9,900	2	0	4,479	5,437	(18)
Balance at Jun. 30, 2021			9,567	2	0	4,479	5,105	(19)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,922		332				332
Other comprehensive income (loss)	(163)	$ (163)	1					1
Balance at Sep. 30, 2021	$ 45,692		$ 9,900	$ 2	$ 0	$ 4,479	$ 5,437	$ (18)

Statements of Changes in Shareh

Statements of Changes in Shareholder's Equity (Unaudited) - MEC - USD ($) $ in Millions	Total	Additional Paid-in Capital	MEC	MECCommon Stock	MECAdditional Paid-in Capital	MECRetained Earnings
Balance at Dec. 31, 2019			$ 7,240	$ 0	$ 561	$ 6,679
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 4,628		700			700
Other equity transactions	0	$ (1)
Balance at Sep. 30, 2020			7,940	0	561	7,379
Balance at Jun. 30, 2020			7,600	0	561	7,039
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,842		340			340
Other equity transactions	1
Balance at Sep. 30, 2020			7,940	0	561	7,379
Balance at Dec. 31, 2020	43,010		8,065	0	561	7,504
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,207		737			737
Other equity transactions	(3)
Balance at Sep. 30, 2021	45,692		8,802	0	561	8,241
Balance at Jun. 30, 2021			8,426	0	561	7,865
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,922		377			377
Other equity transactions	(2)		(1)			(1)
Balance at Sep. 30, 2021	$ 45,692		$ 8,802	$ 0	$ 561	$ 8,241

Consolidated Statements of Ch_3

Consolidated Statements of Changes in Member's Equity (Unaudited) - MidAmerican Funding LLC - USD ($) $ in Millions	Total	Additional Paid-in Capital	MidAmerican Funding, LLC	MidAmerican Funding, LLCAdditional Paid-in Capital	MidAmerican Funding, LLCRetained Earnings
Balance at Dec. 31, 2019			$ 8,101	$ 1,679	$ 6,422
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 4,628		695		695
Other equity transactions	0	$ (1)
Balance at Sep. 30, 2020			8,796	1,679	7,117
Balance at Jun. 30, 2020			8,459	1,679	6,780
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,842		337		337
Other equity transactions	1
Balance at Sep. 30, 2020			8,796	1,679	7,117
Balance at Dec. 31, 2020	43,010		8,919	1,679	7,240
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,207		728		728
Other equity transactions	(3)
Balance at Sep. 30, 2021	45,692		9,647	1,679	7,968
Balance at Jun. 30, 2021			9,273	1,679	7,594
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,922		373		373
Other equity transactions	(2)		1		1
Balance at Sep. 30, 2021	$ 45,692		$ 9,647	$ 1,679	$ 7,968

Consolidated Statements of Ch_4

Consolidated Statements of Changes in Equity (Unaudited) - NPC - USD ($) $ in Millions	Total	Additional Paid-in Capital	NPC	NPCCommon Stock	NPCAdditional Paid-in Capital	NPCRetained Earnings	NPCAccumulated Other Comprehensive (Loss) Income, Net
Balance (shares) at Dec. 31, 2019				1,000
Balance at Dec. 31, 2019			$ 2,797	$ 0	$ 2,308	$ 493	$ (4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 4,628		273			273
Dividends declared			(85)			(85)
Other equity transactions	0	$ (1)	1			1
Balance (shares) at Sep. 30, 2020				1,000
Balance at Sep. 30, 2020			2,986	$ 0	2,308	682	(4)
Balance (shares) at Jun. 30, 2020				1,000
Balance at Jun. 30, 2020			2,792	$ 0	2,308	488	(4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	2,842		194			194
Other equity transactions	$ 1
Balance (shares) at Sep. 30, 2020				1,000
Balance at Sep. 30, 2020			$ 2,986	$ 0	2,308	682	(4)
Balance (shares) at Dec. 31, 2020	76,000,000		1,000	1,000
Balance at Dec. 31, 2020	$ 43,010		$ 2,939	$ 0	2,308	634	(3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	4,207		301			301
Dividends declared			$ (13)			(13)
Other equity transactions	$ (3)
Balance (shares) at Sep. 30, 2021	76,000,000		1,000	1,000
Balance at Sep. 30, 2021	$ 45,692		$ 3,227	$ 0	2,308	922	(3)
Balance (shares) at Jun. 30, 2021				1,000
Balance at Jun. 30, 2021			3,010	$ 0	2,308	705	(3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	1,922		$ 217			217
Other equity transactions	$ (2)
Balance (shares) at Sep. 30, 2021	76,000,000		1,000	1,000
Balance at Sep. 30, 2021	$ 45,692		$ 3,227	$ 0	$ 2,308	$ 922	$ (3)

Consolidated Statements of Ch_5

Consolidated Statements of Changes in Equity (Unaudited) - SPPC - USD ($) $ in Millions	Total	SPPC	SPPCCommon Stock	SPPCAdditional Paid-in Capital	SPPCRetained Earnings	SPPCAccumulated Other Comprehensive (Loss) Income, Net
Balance (shares) at Dec. 31, 2019			1,000
Balance at Dec. 31, 2019		$ 1,320	$ 0	$ 1,111	$ 210	$ (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 4,628	90			90
Dividends declared		(20)			(20)
Balance (shares) at Sep. 30, 2020			1,000
Balance at Sep. 30, 2020		1,390	$ 0	1,111	280	(1)
Balance (shares) at Jun. 30, 2020			1,000
Balance at Jun. 30, 2020		1,338	$ 0	1,111	228	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 2,842	52			52
Balance (shares) at Sep. 30, 2020			1,000
Balance at Sep. 30, 2020		$ 1,390	$ 0	1,111	280	(1)
Balance (shares) at Dec. 31, 2020	76,000,000	1,000	1,000
Balance at Dec. 31, 2020	$ 43,010	$ 1,411	$ 0	1,111	301	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 4,207	$ 107			107
Balance (shares) at Sep. 30, 2021	76,000,000	1,000	1,000
Balance at Sep. 30, 2021	$ 45,692	$ 1,518	$ 0	1,111	408	(1)
Balance (shares) at Jun. 30, 2021			1,000
Balance at Jun. 30, 2021		1,456		1,111	346	(1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	$ 1,922	$ 62			62
Balance (shares) at Sep. 30, 2021	76,000,000	1,000	1,000
Balance at Sep. 30, 2021	$ 45,692	$ 1,518	$ 0	$ 1,111	$ 408	$ (1)

Consolidated Statements of Ch_6

Consolidated Statements of Changes in Equity (Unaudited) - EEGH - USD ($) $ in Millions	Total	EEGH	Member InterestsEEGH	Accumulated Other Comprehensive (Loss) Income, Net	Accumulated Other Comprehensive (Loss) Income, NetEEGH	Noncontrolling Interest	Noncontrolling InterestEEGH
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	4,639	154	57				97
Other comprehensive income (loss)	(177)	23		(177)	23
Contributions		299	299
Distributions		(4,155)	(4,044)				(111)
Balance at Sep. 30, 2020	36,869	6,550	5,343	(1,883)	(164)	101	1,371
Balance at Jun. 30, 2020	33,785	8,456	7,352	(2,125)	(271)	101	1,375
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,846	118	86				32
Other comprehensive income (loss)	242	107		242	107
Contributions		299	299
Distributions		(2,430)	(2,394)				(36)
Balance at Sep. 30, 2020	36,869	6,550	5,343	(1,883)	(164)	101	1,371
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	4,518	520	218				302
Other comprehensive income (loss)	33	15		29	11	4	4
Contributions	9	284	284			9
Distributions		(424)	(71)				(353)
Balance at Sep. 30, 2021	49,616	7,390	3,388	(1,523)	(42)	3,924	4,044
Balance at Jun. 30, 2021	49,365	7,398	3,366	(1,360)	(40)	3,953	4,072
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,025	169	69				100
Other comprehensive income (loss)	(163)	(2)		(163)	(2)
Contributions		2	2
Distributions		(177)	(49)				(128)
Balance at Sep. 30, 2021	$ 49,616	$ 7,390	$ 3,388	$ (1,523)	$ (42)	$ 3,924	$ 4,044

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 4,518	$ 4,639
Adjustments to reconcile net income to net cash flows from operating activities:
Gains (losses) on marketable securities, net	(1,142)	(2,407)
Depreciation and amortization	2,834	2,357
Allowance for equity funds	(90)	(122)
Equity (income) loss, net of distributions	346	146
Changes in regulatory assets and liabilities	(518)	(87)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Derivative collateral, net	115	53
Pension and other postretirement benefit plans	(37)	(69)
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Acquisitions, net of cash acquired	(64)	0
Purchases of marketable securities	(243)	(322)
Proceeds from sales of marketable securities	222	308
Proceeds from other investments	1,296	13
Equity method investments	(54)	(2,062)
Other, net	(91)	37
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Preferred stock redemptions	(1,450)	0
Preferred dividends	(86)	0
Common stock purchases	0	(126)
Proceeds from BHE senior debt	0	3,231
Repayments of BHE senior debt	(450)	(350)
Proceeds from subsidiary debt	2,014	2,648
Repayments of subsidiary debt	(1,271)	(1,558)
Net repayments of short-term debt	(316)	(815)
Purchase of noncontrolling interest	0	(33)
Distributions to noncontrolling interests	(366)	(13)
Contributions from noncontrolling interests	9	5
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Effect of exchange rate changes	1	4
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	$ 2,942	$ 2,096

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows (Unaudited) - PAC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 4,207	$ 4,628
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(90)	(122)
Changes in regulatory assets and liabilities	(518)	(87)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Derivative collateral, net	115	53
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Other, net	(91)	37
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Net repayments of short-term debt	(316)	(815)
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	2,942	2,096
PAC
Cash flows from operating activities:
Net income (loss)	726	628
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	811	696
Allowance for equity funds	(38)	(73)
Changes in regulatory assets and liabilities	(185)	(17)
Deferred income taxes and investment tax credits, net	33	(48)
Other, net	0	2
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(1)	(150)
Inventories	17	(97)
Derivative collateral, net	19	22
Prepaid expenses	(11)	(4)
Accrued property, income and other taxes, net	96	84
Accounts payable and other liabilities	77	248
Net cash flows from operating activities	1,544	1,291
Cash flows from investing activities:
Capital expenditures	(1,157)	(1,618)
Other, net	7	31
Net cash flows from investing activities	(1,150)	(1,587)
Cash flows from financing activities:
Proceeds from long-term debt	984	987
Repayments of long-term debt	(400)	0
Net repayments of short-term debt	(93)	(130)
Other, net	(5)	0
Net cash flows from financing activities	486	857
Net change in cash and cash equivalents and restricted cash and cash equivalents	880	561
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	$ 899	$ 597

Statements of Cash Flows (Unaud

Statements of Cash Flows (Unaudited) - MEC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 4,207	$ 4,628
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(90)	(122)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Pension and other postretirement benefit plans	(37)	(69)
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Purchases of marketable securities	(243)	(322)
Proceeds from sales of marketable securities	222	308
Other, net	(91)	37
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	2,942	2,096
MEC
Cash flows from operating activities:
Net income (loss)	737	700
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	634	531
Amortization of utility plant to other operating expenses	26	25
Allowance for equity funds	(25)	(33)
Deferred income taxes and investment tax credits, net	121	76
Settlements of asset retirement obligations	(51)	(55)
Other, net	42	(1)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(331)	(15)
Inventories	34	(40)
Pension and other postretirement benefit plans	2	(17)
Accrued property, income and other taxes, net	80	(10)
Accounts payable and other liabilities	21	48
Net cash flows from operating activities	1,290	1,209
Cash flows from investing activities:
Capital expenditures	(1,266)	(1,341)
Purchases of marketable securities	(166)	(251)
Proceeds from sales of marketable securities	163	244
Other, net	(7)	9
Net cash flows from investing activities	(1,276)	(1,339)
Cash flows from financing activities:
Proceeds from long-term debt	492	0
Repayments of long-term debt	(1)	0
Other, net	(2)	(1)
Net cash flows from financing activities	489	(1)
Net change in cash and cash equivalents and restricted cash and cash equivalents	503	(131)
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	$ 548	$ 199

Consolidated Statements of Ca_3

Consolidated Statements of Cash Flows (Unaudited) - MidAmerican Funding LLC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 4,207	$ 4,628
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(90)	(122)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Pension and other postretirement benefit plans	(37)	(69)
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Purchases of marketable securities	(243)	(322)
Proceeds from sales of marketable securities	222	308
Other, net	(91)	37
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	2,942	2,096
MidAmerican Funding, LLC
Cash flows from operating activities:
Net income (loss)	728	695
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	634	531
Amortization of utility plant to other operating expenses	26	25
Allowance for equity funds	(25)	(33)
Deferred income taxes and investment tax credits, net	121	79
Settlements of asset retirement obligations	(51)	(55)
Other, net	42	(1)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(331)	(16)
Inventories	34	(40)
Pension and other postretirement benefit plans	2	(17)
Accrued property, income and other taxes, net	80	(13)
Accounts payable and other liabilities	16	44
Net cash flows from operating activities	1,276	1,199
Cash flows from investing activities:
Capital expenditures	(1,266)	(1,341)
Purchases of marketable securities	(166)	(251)
Proceeds from sales of marketable securities	163	244
Other, net	(7)	10
Net cash flows from investing activities	(1,276)	(1,338)
Cash flows from financing activities:
Proceeds from long-term debt	492	0
Repayments of long-term debt	(1)	0
Net change in note payable to affiliate	13	13
Other, net	(1)	(1)
Net cash flows from financing activities	503	12
Net change in cash and cash equivalents and restricted cash and cash equivalents	503	(127)
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	$ 549	$ 204

Consolidated Statements of Ca_4

Consolidated Statements of Cash Flows (Unaudited) - NPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 4,207	$ 4,628
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(90)	(122)
Changes in regulatory assets and liabilities	(518)	(87)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Other, net	(91)	37
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	2,942	2,096
NPC
Cash flows from operating activities:
Net income (loss)	301	273
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	304	273
Allowance for equity funds	(5)	(5)
Changes in regulatory assets and liabilities	(11)	38
Deferred income taxes and investment tax credits, net	(19)	(3)
Deferred energy	(154)	(38)
Amortization of deferred energy	(7)	(30)
Other, net	1	5
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(133)	(112)
Inventories	3	(4)
Accrued property, income and other taxes, net	28	48
Accounts payable and other liabilities	97	(39)
Net cash flows from operating activities	405	406
Cash flows from investing activities:
Capital expenditures	(323)	(343)
Proceeds from sale of assets	0	26
Other, net	1	0
Net cash flows from investing activities	(322)	(317)
Cash flows from financing activities:
Proceeds from long-term debt	0	718
Repayments of long-term debt	0	(575)
Dividends paid	(13)	(85)
Other, net	(12)	(12)
Net cash flows from financing activities	(25)	46
Net change in cash and cash equivalents and restricted cash and cash equivalents	58	135
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	$ 94	$ 160

Consolidated Statements of Ca_5

Consolidated Statements of Cash Flows (Unaudited) - SPPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income (loss)	$ 4,207	$ 4,628
Adjustments to reconcile net income to net cash flows from operating activities:
Allowance for equity funds	(90)	(122)
Changes in regulatory assets and liabilities	(518)	(87)
Deferred income taxes and investment tax credits, net	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(13)	(1,668)
Accrued property, income and other taxes, net	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Net repayments of short-term debt	(316)	(815)
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	2,942	2,096
SPPC
Cash flows from operating activities:
Net income (loss)	107	90
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	107	104
Allowance for equity funds	(5)	(3)
Changes in regulatory assets and liabilities	(30)	(30)
Deferred income taxes and investment tax credits, net	10	3
Deferred energy	(95)	(5)
Amortization of deferred energy	12	(6)
Other, net	(1)	0
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(25)	(83)
Inventories	9	(18)
Accrued property, income and other taxes, net	3	8
Accounts payable and other liabilities	21	119
Net cash flows from operating activities	113	179
Cash flows from investing activities:
Capital expenditures	(196)	(192)
Net cash flows from investing activities	(196)	(192)
Cash flows from financing activities:
Proceeds from long-term debt	0	30
Net repayments of short-term debt	82	0
Dividends paid	0	(20)
Other, net	(5)	(3)
Net cash flows from financing activities	77	7
Net change in cash and cash equivalents and restricted cash and cash equivalents	(6)	(6)
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	$ 20	$ 26

Consolidated Statements of Ca_6

Consolidated Statements of Cash Flows (Unaudited) - EEGH - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flows from operating activities:
Net income	$ 4,518	$ 4,639
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	2,834	2,357
Allowance for equity funds	(90)	(122)
Equity (income) loss, net of distributions	346	146
Changes in regulatory assets and liabilities	(518)	(87)
Deferred income taxes	661	791
Other, net	(88)	(6)
Changes in other operating assets and liabilities:
Trade receivables and other assets	(13)	(1,668)
Derivative collateral, net	115	53
Pension and other postretirement benefit plans	(37)	(69)
Accrued property, income and other taxes	(29)	97
Accounts payable and other liabilities	427	796
Net cash flows from operating activities	6,984	4,520
Cash flows from investing activities:
Capital expenditures	(4,594)	(4,607)
Other, net	(91)	37
Net cash flows from investing activities	(3,528)	(6,633)
Cash flows from financing activities:
Other, net	(44)	(52)
Net cash flows from financing activities	(1,960)	2,937
Net change in cash and cash equivalents and restricted cash and cash equivalents	1,497	828
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	2,942	2,096
EEGH
Cash flows from operating activities:
Net income	520	154
Adjustments to reconcile net income to net cash flows from operating activities:
(Gains) losses on other items, net	(9)	463
Depreciation and amortization	244	282
Allowance for equity funds	(5)	(11)
Equity (income) loss, net of distributions	(1)	33
Changes in regulatory assets and liabilities	(2)	19
Deferred income taxes	135	(103)
Other, net	(11)	8
Changes in other operating assets and liabilities:
Trade receivables and other assets	13	271
Derivative collateral, net	7	148
Pension and other postretirement benefit plans	0	(46)
Accrued property, income and other taxes	(61)	36
Accounts payable and other liabilities	37	5
Net cash flows from operating activities	867	1,259
Cash flows from investing activities:
Capital expenditures	(291)	(258)
Repayment of loans by affiliates	269	3,422
Loans to affiliates	(170)	(225)
Other, net	(9)	(9)
Net cash flows from investing activities	(201)	2,930
Cash flows from financing activities:
Repayments of long-term debt	(500)	0
Net repayments of short-term debt	0	(62)
Repayment of notes payable, net	(9)	(253)
Proceeds from equity contributions	256	299
Distributions	(353)	(4,155)
Other, net	(1)	(1)
Net cash flows from financing activities	(607)	(4,172)
Net change in cash and cash equivalents and restricted cash and cash equivalents	59	17
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	$ 107	$ 56

General

General	9 Months Ended
	Sep. 30, 2021
Segment Reporting Information [Line Items]
General	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 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 nine-month period ended September 30, 2021.
PAC
Segment Reporting Information [Line Items]
General	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income materially equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 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 nine-month period ended September 30, 2021.
MEC
Segment Reporting Information [Line Items]
General	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 September 30, 2021, and for the three- and nine-month periods ended September 30, 2021 and 2020. The Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 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 nine-month period ended September 30, 2021.
MidAmerican Funding, LLC
Segment Reporting Information [Line Items]
General	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 September 30, 2021, and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income materially equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 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 nine-month period ended September 30, 2021.
NPC
Segment Reporting Information [Line Items]
General	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 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 nine-month period ended September 30, 2021.
SPPC
Segment Reporting Information [Line Items]
General	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 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 nine-month period ended September 30, 2021.
EEGH
Segment Reporting Information [Line Items]
General	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 ("Dominion Questar"), 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"). In July 2021, Dominion Questar and DEI delivered a written notice to BHE stating that BHE and Dominion Questar have mutually elected to terminate the Q-Pipe Transaction. 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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 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 nine-month period ended September 30, 2021.

Business Acquisition

Business Acquisition	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Business Acquisition	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. 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 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 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 was included in other current assets on the Consolidated Balance Sheet as of December 31, 2020, to Dominion Questar on November 2, 2020. Pursuant to the Q-Pipe Purchase Agreement, Dominion Questar agreed that, if the Q-Pipe Transaction did not close, it would repay all or (depending upon 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. On July 9, 2021, Dominion Questar and DEI delivered a written notice to BHE stating that BHE and Dominion Questar have mutually elected to terminate the Q-Pipe Purchase Agreement. On July 14, 2021, BHE received the Purchase Price Repayment Amount of approximately $1.3 billion in cash. Included in BHE's Consolidated Statement of Operations within the BHE Pipeline Group reportable segment for the three- and nine-month periods ended September 30, 2021, is operating revenue of $516 million and $1,563 million, respectively and net income attributable to BHE shareholders of $74 million and $247 million, respectively, as a result of including BHE GT&S from November 1, 2020. 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 following table summarizes the 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 $ 582 Property, plant and equipment 9,264 Goodwill 1,741 Regulatory assets 108 Deferred income taxes 284 Other long-term assets 1,424 Total assets 13,403 Current liabilities, including current portion of long-term debt of $1,200 1,616 Long-term debt, less current portion 4,415 Regulatory liabilities 650 Other long-term liabilities 292 Total liabilities 6,973 Noncontrolling interest 3,916 Net assets acquired $ 2,514 During the nine-month period ended September 30, 2021, the Company made revisions to certain contracts and property, plant and equipment related to non-regulated operations, the equity method investment and associated deferred income tax amounts based upon the receipt of additional information about the facts and circumstances that existed as of the acquisition date. Provisional amounts were subject to further revision for up to 12 months following the acquisition date until the related valuations were completed. 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): Nine-Month Period Ended September 30, 2020 Operating revenue $ 16,791 Net income attributable to BHE shareholders $ 4,468

Cash and Cash Equivalents and R

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents	9 Months Ended
	Sep. 30, 2021
PAC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and Cash Equivalents and Restricted Cash and Cash Equivalents	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 September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 893 $ 13 Restricted cash included in other current assets 4 4 Restricted cash included in other assets 2 2 Total cash and cash equivalents and restricted cash and cash equivalents $ 899 $ 19
MEC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and Cash Equivalents and Restricted Cash and Cash Equivalents	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 September 30, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 541 $ 38 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 548 $ 45
MidAmerican Funding, LLC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and Cash Equivalents and Restricted Cash and Cash Equivalents	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 September 30, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 542 $ 39 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 549 $ 46
NPC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and Cash Equivalents and Restricted Cash and Cash Equivalents	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 September 30, 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 September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 85 $ 25 Restricted cash and cash equivalents included in other current assets 9 11 Total cash and cash equivalents and restricted cash and cash equivalents $ 94 $ 36
SPPC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and Cash Equivalents and Restricted Cash and Cash Equivalents	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 September 30, 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 September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 14 $ 19 Restricted cash and cash equivalents included in other current assets 6 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 20 $ 26

Property, Plant and Equipment,

Property, Plant and Equipment, Net	9 Months Ended
	Sep. 30, 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 September 30, December 31, Life 2021 2020 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 89,026 $ 86,730 Interstate natural gas pipeline assets 3-80 years 17,044 16,667 106,070 103,397 Accumulated depreciation and amortization (32,444) (30,662) Regulated assets, net 73,626 72,735 Nonregulated assets: Independent power plants 5-30 years 7,058 7,012 Other assets 3-40 years 5,951 5,659 13,009 12,671 Accumulated depreciation and amortization (2,916) (2,586) Nonregulated assets, net 10,093 10,085 Net operating assets 83,719 82,820 Construction work-in-progress 4,343 3,308 Property, plant and equipment, net $ 88,062 $ 86,128 Construction work-in-progress includes $3.9 billion as of September 30, 2021 and $3.2 billion as of December 31, 2020, related to the construction of regulated assets.
PAC
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 September 30, December 31, Depreciable Life 2021 2020 Utility Plant: Generation 15 - 59 years $ 13,635 $ 12,861 Transmission 60 - 90 years 7,833 7,632 Distribution 20 - 75 years 7,889 7,660 Intangible plant (1) 5 - 75 years 1,083 1,054 Other 5 - 60 years 1,535 1,510 Utility plant in service 31,975 30,717 Accumulated depreciation and amortization (10,370) (9,838) Utility plant in service, net 21,605 20,879 Other non-regulated, net of accumulated depreciation and amortization 14 - 95 years 9 9 Plant, net 21,614 20,888 Construction work-in-progress 1,134 1,542 Property, plant and equipment, net $ 22,748 $ 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 $38 million for the three-month period ended September 30, 2021 as compared to the three-month period ended September 30, 2020, and $120 million for the nine-month period ended September 30, 2021 compared to the nine-month period ended September 30, 2020 based on historical property, plant and equipment balances and including depreciation of certain coal-fueled generating units in Washington over accelerated periods.
MEC
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 September 30, December 31, Depreciable Life 2021 2020 Utility plant in service, net: Generation 20-70 years $ 17,162 $ 16,980 Transmission 52-75 years 2,415 2,365 Electric distribution 20-75 years 4,522 4,369 Natural gas distribution 29-75 years 2,011 1,955 Utility plant in service 26,110 25,669 Accumulated depreciation and amortization (7,444) (6,902) Utility plant in service, net 18,666 18,767 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1) (1) Nonregulated property, net 6 6 18,672 18,773 Construction work-in-progress 1,101 506 Property, plant and equipment, net $ 19,773 $ 19,279
MidAmerican Funding, LLC
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.
NPC
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 September 30, December 31, 2021 2020 Utility plant: Generation 30 - 55 years $ 3,780 $ 3,690 Transmission 45 - 70 years 1,493 1,468 Distribution 20 - 65 years 3,878 3,771 General and intangible plant 5 - 65 years 810 791 Utility plant 9,961 9,720 Accumulated depreciation and amortization (3,350) (3,162) Utility plant, net 6,611 6,558 Other non-regulated, net of accumulated depreciation and amortization 45 years 1 1 Plant, net 6,612 6,559 Construction work-in-progress 217 142 Property, plant and equipment, net $ 6,829 $ 6,701
SPPC
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 September 30, December 31, 2021 2020 Utility plant: Electric generation 25 - 60 years $ 1,140 $ 1,130 Electric transmission 50 - 100 years 914 908 Electric distribution 20 - 100 years 1,806 1,754 Electric general and intangible plant 5 - 70 years 199 189 Natural gas distribution 35 - 70 years 433 429 Natural gas general and intangible plant 5 - 70 years 15 15 Common general 5 - 70 years 361 355 Utility plant 4,868 4,780 Accumulated depreciation and amortization (1,834) (1,755) Utility plant, net 3,034 3,025 Other non-regulated, net of accumulated depreciation and amortization 70 years — 2 Plant, net 3,034 3,027 Construction work-in-progress 231 137 Property, plant and equipment, net $ 3,265 $ 3,164
EEGH
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 September 30, December 31, Depreciable Life 2021 2020 Utility Plant: Interstate natural gas pipeline assets 24 - 43 years $ 8,555 $ 8,382 Intangible plant 5 - 10 years 111 115 Utility plant in service 8,666 8,497 Accumulated depreciation and amortization (2,859) (2,759) Utility plant in service, net 5,807 5,738 Nonutility Plant: LNG facility 40 years 4,466 4,454 Intangible plant 14 years 25 25 Nonutility plant in service 4,491 4,479 Accumulated depreciation and amortization (396) (283) Nonutility plant in service, net 4,095 4,196 Plant, net 9,902 9,934 Construction work-in-progress 293 210 Property, plant and equipment, net $ 10,195 $ 10,144 Construction work-in-progress includes $266 million and $196 million as of September 30, 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	9 Months Ended
	Sep. 30, 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 September 30, December 31, 2021 2020 Investments: BYD Company Limited common stock $ 7,023 $ 5,897 Rabbi trusts 473 440 Other 295 263 Total investments 7,791 6,600 Equity method investments: BHE Renewables tax equity investments 5,253 5,626 Iroquois Gas Transmission System, L.P. 583 580 Electric Transmission Texas, LLC 578 594 JAX LNG, LLC 87 75 Bridger Coal Company 60 74 Other 163 118 Total equity method investments 6,724 7,067 Restricted cash and cash equivalents and investments: Quad Cities Station nuclear decommissioning trust funds 727 676 Other restricted cash and cash equivalents 233 155 Total restricted cash and cash equivalents and investments 960 831 Total investments and restricted cash and cash equivalents and investments $ 15,475 $ 14,498 Reflected as: Current assets $ 257 $ 178 Noncurrent assets 15,218 14,320 Total investments and restricted cash and cash equivalents and investments $ 15,475 $ 14,498 Investments Gains on marketable securities, net recognized during the period consists of the following (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Unrealized gains recognized on marketable securities still held at the reporting date $ 294 $ 1,794 $ 1,141 $ 2,403 Net gains recognized on marketable securities sold during the period — 3 1 4 Gains on marketable securities, net $ 294 $ 1,797 $ 1,142 $ 2,407 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 $353 million, or after-tax income of $123 million inclusive of production tax credits ("PTCs") of $401 million and other income tax benefits of $79 million, during the nine-month period ended September 30, 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 September 30, 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 September 30, 2021 and December 31, 2020, consist substantially of funds restricted for 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 September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 2,709 $ 1,290 Restricted cash and cash equivalents 216 140 Investments and restricted cash and cash equivalents and investments 17 15 Total cash and cash equivalents and restricted cash and cash equivalents $ 2,942 $ 1,445
EEGH
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 September 30, December 31, 2021 2020 Investments: Investment funds $ 13 $ — Equity method investments: Iroquois 246 244 Total investments 259 244 Restricted cash and cash equivalents: Customer deposits 17 13 Total restricted cash and cash equivalents 17 13 Total investments and restricted cash and cash equivalents $ 276 $ 257 Reflected as: Current assets $ 17 $ 13 Noncurrent assets 259 244 Total investments and restricted cash and cash equivalents $ 276 $ 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 September 30, 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 $30 million and $63 million for the nine-month periods ended September 30, 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 September 30, 2021 and December 31, 2020 consist 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 September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 90 $ 35 Restricted cash and cash equivalents 17 13 Total cash and cash equivalents and restricted cash and cash equivalents $ 107 $ 48

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2021
MEC
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 MidAmerican Energy's customers, the Iowa Utilities Board ordered the recovery of these higher costs to be applied to customer bills over the period April 2021 through April 2022 based on a customer's monthly natural gas usage. While sufficient liquidity is available to MidAmerican Energy, the increased costs and longer recovery period resulted in higher working capital requirements during the nine-month period ended September 30, 2021.
MidAmerican Funding, LLC
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory Matters	Regulatory MattersRefer to Note 4 of MidAmerican Energy's Notes to Financial Statements.
EEGH
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory Matters	Regulatory Matters Eastern Gas Transmission and Storage, Inc. In September 2021, Eastern Gas Transmission and Storage, Inc. ("EGTS") filed a general rate case for its FERC-jurisdictional services, with proposed rates to be effective November 1, 2021. EGTS' previous rate case was settled in 1998. EGTS proposed an annual cost-of-service of approximately $1.1 billion. EGTS has requested increases in various rates, including general system storage rates by 85% and general system transportation rates by 60%. In October 2021, the FERC issued an order that accepted the November 1, 2021 effective date for certain changes in rates, while suspending the other changes for five months following the proposed effective date, until April 1, 2022 subject to refund and the outcome of hearing procedures. This matter is pending. In July 2017, the FERC audit staff communicated to 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) estimated charge for disallowance of capitalized allowance for funds used during construction. As a condition of the December 2020 ruling, EGTS filed its proposed accounting entries and supporting documentation with the FERC during the second quarter of 2021. During the finalization of these entries, EGTS refined the estimated charge for disallowance of capitalized allowance for funds used during construction, which resulted in a reduction to the estimated charge of $11 million ($8 million after-tax) that was recorded in operations and maintenance expense in its Consolidated Statements of Operations in the second quarter of 2021. In September 2021, the FERC approved EGTS' accounting entries and supporting documentation. In December 2014, EGTS entered into a precedent agreement with Atlantic Coast Pipeline, LLC ("Atlantic Coast Pipeline") for the project previously intended for EGTS to provide approximately 1,500,000 decatherms ("Dth") of firm transportation service to various customers in connection with the Atlantic Coast Pipeline project ("Supply Header Project"). As a result of the cancellation of the Atlantic Coast Pipeline project, in the second quarter of 2020 Eastern Energy Gas recorded a charge of $482 million ($359 million after-tax) in operations and maintenance expense in its Consolidated Statements of Operations associated with the probable abandonment of a significant portion of the project as well as the establishment of a $75 million asset retirement obligation. In the third quarter of 2020, Eastern Energy Gas recorded an additional charge of $10 million ($7 million after-tax) associated with the probable abandonment of a significant portion of the project and a $29 million ($20 million after-tax) benefit from a revision to the previously established asset retirement obligation, both of which were recorded in operations and maintenance expense in Eastern Energy Gas' Consolidated Statements of Operations. As EGTS evaluates its future use, approximately $40 million remains within property, plant and equipment for a potential modified project. 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.

Recent Financing Transactions

Recent Financing Transactions	9 Months Ended
	Sep. 30, 2021
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-Term Debt In November 2021, PacifiCorp exercised its par call redemption option, available in the final three months prior to scheduled maturity, and redeemed $450 million of its 2.95% Series First Mortgage Bonds that was originally due February 2022. In September 2021, HomeServices entered into a $150 million unsecured amortizing term loan due September 2026. The net proceeds were used to fund the repayment of its existing unsecured amortizing term loan due September 2022. The amortizing term loan has an underlying variable interest rate based on the London Interbank Offered Rate plus a spread that varies based on HomeServices' total net leverage ratio as of the last day of each quarter. In July 2021, MidAmerican Energy issued $500 million of its 2.70% First Mortgage Bonds due August 2052. MidAmerican Energy used the net proceeds to finance a portion of the capital expenditures, disbursed during the period from July 22, 2019 to September 27, 2019, with respect to investments in its 2,000-megawatt Wind XI project, its 592-megawatt Wind XII project, its 207-megawatt Wind XII Expansion project and the repowering of certain of its existing wind-powered generating facilities, which were previously financed with MidAmerican Energy's general funds. In July 2021, PacifiCorp issued $1 billion of its 2.90% First Mortgage Bonds due June 2052. PacifiCorp used the net proceeds to finance a portion of the capital expenditures disbursed during the period from July 1, 2019 to May 31, 2021 with respect to investments, primarily from the Energy Vision 2020 initiative, in the repowering of certain of its existing wind-powered generating facilities and the construction and acquisition of new wind-powered generating facilities, which were previously financed with PacifiCorp's general funds. On June 30, 2021, as part of an intercompany transaction with its wholly owned subsidiary EGTS, Eastern Energy Gas exchanged a total of $1.6 billion of its issued and outstanding third party notes, making EGTS the primary obligor of the exchanged notes. The intercompany debt exchange was a common control transaction accounted for as a debt modification with no gain or loss recognized in the Consolidated Financial Statements. 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 September 2021, HomeServices amended and restated its existing $600 million unsecured credit facility expiring in September 2022. The amendment increased the lender commitment to $700 million and extended the expiration date to September 2026. In June 2021, BHE amended and restated its existing $3.5 billion unsecured credit facility expiring in June 2022 with one remaining one-year extension option. The amendment extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to lender consent. In June 2021, PacifiCorp terminated, upon lender consent, its existing $600 million unsecured credit facility expiring in June 2022. In June 2021, PacifiCorp amended and restated its other existing $600 million unsecured credit facility expiring in June 2022 with one remaining one-year extension option. The amendment increased the lender commitment to $1.2 billion, extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to lender consent. In June 2021, MidAmerican Energy amended and restated its existing $900 million unsecured credit facility expiring in June 2022. The amendment increased the commitment of the lenders to $1.5 billion, extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to consent of the lenders. Additionally, in June 2021, MidAmerican Energy terminated its existing $600 million unsecured credit facility expiring in August 2021. In June 2021, Nevada Power and Sierra Pacific each amended and restated its existing $400 million and $250 million secured credit facilities, respectively, expiring in June 2022 with no remaining one-year extension options. The amendments extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to lender consent. In May 2021, AltaLink, L.P. extended, with lender consent, the expiration date for its existing C$75 million and C$500 million secured credit facilities to December 2025 by exercising an available one-year extension option. In May 2021, AltaLink Investments, L.P. extended, with lender consent, the expiration date for its existing C$300 million unsecured credit facility to December 2025 by exercising an available one-year extension option. 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.
PAC
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-term Debt In November 2021, PacifiCorp exercised its par call redemption option, available in the final three months prior to scheduled maturity, and redeemed $450 million of its 2.95% Series First Mortgage Bonds that was originally due February 2022. In July 2021, PacifiCorp issued $1 billion of its 2.90% First Mortgage Bonds due June 2052. PacifiCorp used the net proceeds to finance a portion of the capital expenditures disbursed during the period from July 1, 2019 to May 31, 2021 with respect to investments, primarily from the Energy Vision 2020 initiative, in the repowering of certain of its existing wind-powered generating facilities and the construction and acquisition of new wind-powered generating facilities, which were previously financed with PacifiCorp's general funds. Credit Facilities In June 2021, PacifiCorp terminated, upon lender consent, its existing $600 million unsecured credit facility expiring in June 2022. In June 2021, PacifiCorp amended and restated its other existing $600 million unsecured credit facility expiring in June 2022 with one remaining one-year extension option. The amendment increased the lender commitment to $1.2 billion, extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to lender consent. Common Shareholder's Equity In October 2021, PacifiCorp declared a common stock dividend of $150 million, payable in November 2021, to PPW Holdings LLC.
MEC
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-Term Debt In July 2021, MidAmerican Energy issued $500 million of its 2.70% First Mortgage Bonds due August 2052. MidAmerican Energy used the net proceeds to finance a portion of the capital expenditures, disbursed during the period from July 22, 2019 to September 27, 2019, with respect to investments in its 2,000-megawatt Wind XI project, its 592-megawatt Wind XII project, its 207-megawatt Wind XII Expansion project and the repowering of certain of its existing wind-powered generating facilities, which were previously financed with MidAmerican Energy's general funds. Credit Facilities In June 2021, MidAmerican Energy amended and restated its existing $900 million unsecured credit facility expiring in June 2022. The amendment increased the commitment of the lenders to $1.5 billion, extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to consent of the lenders. Additionally, in June 2021, MidAmerican Energy terminated its existing $600 million unsecured credit facility expiring in August 2021.
MidAmerican Funding, LLC
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing TransactionsRefer to Note 5 of MidAmerican Energy's Notes to Financial Statements.
NPC
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Credit Facilities In June 2021, Nevada Power amended and restated its existing $400 million secured credit facility expiring in June 2022 with no remaining one-year extension options. The amendment extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to lender consent.
SPPC
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Credit Facilities In June 2021, Sierra Pacific amended and restated its existing $250 million secured credit facility expiring in June 2022 with no remaining one-year extension options. The amendment extended the expiration date to June 2024 and increased the available maturity extension options to an unlimited number, subject to lender consent.
EEGH
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions On June 30, 2021, as part of an intercompany transaction with its wholly owned subsidiary EGTS, Eastern Energy Gas exchanged a total of $1.6 billion of its issued and outstanding third party notes, making EGTS the primary obligor of the exchanged notes. The intercompany debt exchange was a common control transaction accounted for as a debt modification with no gain or loss recognized in the Consolidated Financial Statements. The following table details the exchanged notes prior to, and subsequent to, the transaction (in millions): Prior to Exchange Subsequent to Exchange Eastern Energy Gas Par Value Eastern Energy Gas Par Value EGTS Par Value 3.6% Senior Notes due 2024 $ 450 $ 339 $ 111 3.0% Senior Notes due 2029 600 174 426 4.8% Senior Notes due 2043 400 54 346 4.6% Senior Notes due 2044 500 56 444 3.9% Senior Notes due 2049 300 27 273 $ 2,250 $ 650 $ 1,600

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2021
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 (benefit) expense is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (31) (20) (29) (23) State income tax, net of federal income tax impacts (4) 3 — 2 Income tax effect of foreign income (1) 1 2 — Effects of ratemaking (6) (2) (5) (2) Equity income — — (1) — Noncontrolling interest (1) — (2) — Other, net 1 — 1 — Effective income tax rate (21) % 3 % (13) % (2) % 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 nine-month periods ended September 30, 2021 and 2020 totaled $1.2 billion and $1.0 billion, respectively. Income tax effect on foreign income includes, among other items, a deferred income tax charge of $109 million recognized in June 2021 upon the enactment of an increase in the United Kingdom's corporate income tax rate from 19% to 25% effective April 1, 2023, and a deferred income tax charge of $35 million recognized in July 2020 related to the United Kingdom's corporate income tax rate that was scheduled to decrease from 19% to 17% effective April 1, 2020; however, the rate was maintained at 19% through amended legislation enacted in July 2020. 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. For the nine-month periods ended September 30, 2021 and 2020, the Company received net cash payments for federal income taxes from Berkshire Hathaway totaling $1.3 billion and $1.0 billion, respectively.
PAC
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 (benefit) expense is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % State income tax, net of federal income tax benefit 4 3 4 3 Federal income tax credits (20) (15) (20) (12) Effects of ratemaking (13) (4) (14) (8) Other (1) 1 — 1 Effective income tax rate (9) % 6 % (9) % 5 % Income tax credits relate primarily to production tax credits ("PTC") 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- and nine-month periods ended September 30, 2021, and 2020 is primarily attributable to activity associated with excess deferred income taxes. Excess deferred income tax amortization, net of deferrals, was $89 million for the nine-month period ended September 30, 2021, including the use of $3 million to amortize certain regulatory asset balances in Wyoming, as compared to $41 million for the nine-month period ended September 30, 2020, including the use of $30 million to accelerate depreciation of certain retired equipment in Oregon. Excess deferred income tax amortization, net of deferrals, was $41 million for the three-month period ended September 30, 2021, as compared to $6 million for the three-month period ended September 30, 2020. 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 nine-month period ended September 30, 2021 PacifiCorp received net cash payments for federal and state income tax from BHE totaling $109 million. For the nine-month period ended September 30, 2020 PacifiCorp made net cash payments for federal and state income tax to BHE totaling $79 million.
MEC
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (44) (55) (143) (122) State income tax, net of federal income tax impacts (26) (27) (27) (29) Effects of ratemaking (12) (15) (13) (13) Other, net — — — 1 Effective income tax rate (61) % (76) % (162) % (142) % 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 September 30, 2021 and 2020 totaled $103 million and $105 million, respectively, and for the nine-month periods ended September 30, 2021 and 2020 totaled $400 million and $352 million, respectively.
MidAmerican Funding, LLC
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Taxes	Income Taxes 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (45) (56) (150) (126) State income tax, net of federal income tax impacts (27) (27) (29) (30) Effects of ratemaking (12) (16) (14) (13) Other, net — — — 1 Effective income tax rate (63) % (78) % (172) % (147) % 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 September 30, 2021 and 2020 totaled $103 million and $105 million, respectively, and for the nine-month periods ended September 30, 2021 and 2020 totaled $400 million and $352 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 received net cash payments for income tax from BHE totaling $681 million and $504 million for the nine-month periods ended September 30, 2021 and 2020, respectively.
NPC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Effects of ratemaking (10) — (10) — Effective income tax rate 11 % 21 % 11 % 21 % 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, 2021.
SPPC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Effects of ratemaking (10) (11) (10) (10) Other — — — (1) Effective income tax rate 11 % 10 % 11 % 10 % 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.
EEGH
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 (benefit) is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % State income tax, net of federal income tax benefit 2 (3) 2 (29) Equity interest 1 — 1 8 Effects of ratemaking (1) (2) (1) (6) Change in tax status — (18) — (24) AFUDC-equity — — — (2) Noncontrolling interest (11) (6) (11) (24) Write-off of regulatory assets — — — 9 Other, net — (2) 1 (1) Effective income tax rate 12 % (10) % 13 % (48) % 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 September 30, 2021 from 25% as of September 30, 2020. Additionally, Eastern Energy Gas' effective tax rate for the periods ended September 30, 2020 is primarily a function of the impacts associated with the cancellation of the Atlantic Coast Pipeline project, the nominal year-to-date pre-tax income driven by charges associated with the Supply Header Project and the finalization of the effects from the change in tax status of certain Eastern Energy Gas subsidiaries. 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 received net cash payments for income tax from BHE totaling $34 million for the nine-month period ended September 30, 2021.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ 7 $ 4 $ 22 $ 11 Interest cost 21 23 59 69 Expected return on plan assets (32) (35) (101) (105) Settlement 4 — 4 — Net amortization 6 8 19 25 Net periodic benefit cost $ 6 $ — $ 3 $ — Other postretirement: Service cost $ 2 $ 1 $ 8 $ 5 Interest cost 4 6 14 16 Expected return on plan assets (5) (9) (16) (25) Net amortization — (1) (2) (5) Net periodic benefit cost (credit) $ 1 $ (3) $ 4 $ (9) 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 September 30, 2021, $9 million and $10 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Service cost $ 4 $ 4 $ 12 $ 12 Interest cost 8 10 23 30 Expected return on plan assets (28) (26) (84) (76) Net amortization 14 11 42 32 Net periodic benefit credit $ (2) $ (1) $ (7) $ (2) 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 £20 million during 2021. As of September 30, 2021, £17 million, or $24 million, of contributions had been made to the United Kingdom pension plan.
PAC
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Net periodic benefit cost (credit) for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ — $ — $ — $ — Interest cost 8 9 22 27 Expected return on plan assets (12) (14) (39) (42) Settlement 4 — 4 — Net amortization 5 4 15 13 Net periodic benefit cost (credit) $ 5 $ (1) $ 2 $ (2) Other postretirement: Service cost $ — $ — $ 1 $ 1 Interest cost 1 2 5 7 Expected return on plan assets (2) (3) (6) (10) Net amortization 1 — 1 — Net periodic benefit (credit) cost $ — $ (1) $ 1 $ (2) 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 pension and other postretirement benefit plans are expected to be $4 million and $1 million, respectively, during 2021. As of September 30, 2021, $3 million of contributions had been made to the pension plans. The amount of lump sum pension distributions in 2021 resulted in a July 31, 2021 remeasurement of the pension plan assets and projected benefit obligation. As a result of the remeasurement, PacifiCorp recognized a settlement loss of $4 million, net of regulatory deferrals. Additionally, the pension plan's underfunded status and regulatory asset each decreased by $84 million.
MEC
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans MidAmerican 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ 5 $ 2 $ 15 $ 4 Interest cost 6 7 17 19 Expected return on plan assets (9) (10) (28) (30) Net amortization — — 1 1 Net periodic benefit cost (credit) $ 2 $ (1) $ 5 $ (6) Other postretirement: Service cost $ 2 $ 1 $ 6 $ 3 Interest cost 2 2 6 5 Expected return on plan assets (2) (4) (7) (10) Net amortization (1) (1) (3) (4) Net periodic benefit cost (credit) $ 1 $ (2) $ 2 $ (6) 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 September 30, 2021, $5 million and $9 million of contributions had been made to the pension and other postretirement benefit plans, respectively.
MidAmerican Funding, LLC
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit PlansRefer to Note 7 of MidAmerican Energy's Notes to Financial Statements.
NPC
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 September 30, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 11 $ 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
SPPC
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. Sierra Pacific contributed $1 million to the Other Postretirement Plans for the nine-month period ended September 30, 2021. 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 September 30, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 31 $ 26 Non-Qualified Pension Plans: Other current liabilities (1) (1) Other long-term liabilities (8) (8) Other Postretirement Plans: Other long-term liabilities (13) (13)
EEGH
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 credit for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ — $ 2 $ — $ 5 Interest cost — 3 — 8 Expected return on plan assets — (14) — (42) Net amortization — 1 — 5 Net periodic benefit credit $ — $ (8) $ — $ (24) Other Postretirement: Service cost $ — $ — $ — $ 1 Interest cost — 1 — 3 Expected return on plan assets — (4) — (14) Net amortization — (1) — (2) Net periodic benefit credit $ — $ (4) $ — $ (12)

Risk Management and Hedging Act

Risk Management and Hedging Activities	9 Months Ended
	Sep. 30, 2021
PAC
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 8 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 September 30, 2021 Not designated as hedging contracts (1) : Commodity assets $ 159 $ 40 $ 4 $ 1 $ 204 Commodity liabilities — — (46) (9) (55) Total 159 40 (42) (8) 149 Total derivatives 159 40 (42) (8) 149 Cash collateral (payable) receivable (6) — 11 — 5 Total derivatives - net basis $ 153 $ 40 $ (31) $ (8) $ 154 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. As of September 30, 2021 a regulatory liability of $149 million was recorded related to the net derivative asset of $149 million. As of December 31, 2020 a regulatory asset of $17 million was recorded related to the net derivative liability of $17 million. 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Beginning balance $ (102) $ 68 $ 17 $ 62 Changes in fair value (128) (49) (247) (21) Net gains (losses) reclassified to operating revenue — 1 (5) 14 Net gains (losses) reclassified to cost of fuel and energy 81 (11) 86 (46) Ending balance $ (149) $ 9 $ (149) $ 9 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 September 30, December 31, Measure 2021 2020 Electricity sales, net Megawatt hours — (1) Natural gas purchases Decatherms 101 100 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 September 30, 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 $54 million and $51 million as of September 30, 2021 and December 31, 2020, respectively, for which PacifiCorp had posted collateral of $11 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 September 30, 2021 and December 31, 2020, PacifiCorp would have been required to post $36 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	9 Months Ended
	Sep. 30, 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 September 30, 2021 Assets: Commodity derivatives $ 15 $ 436 $ 88 $ (49) $ 490 Foreign currency exchange rate derivatives — 8 — — 8 Interest rate derivatives — 12 30 — 42 Mortgage loans held for sale — 1,687 — — 1,687 Money market mutual funds 2,017 — — — 2,017 Debt securities: United States government obligations 228 — — — 228 International government obligations — 2 — — 2 Corporate obligations — 86 — — 86 Municipal obligations — 3 — — 3 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 398 — — — 398 International companies 7,031 — — — 7,031 Investment funds 264 — — — 264 $ 9,953 $ 2,235 $ 118 $ (49) $ 12,257 Liabilities: Commodity derivatives $ (2) $ (134) $ (56) $ 80 $ (112) Foreign currency exchange rate derivatives — (4) — — (4) Interest rate derivatives (1) (11) (2) — (14) $ (3) $ (149) $ (58) $ 80 $ (130) 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 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 $31 million and $35 million as of September 30, 2021 and December 31, 2020, respectively. 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 Nine-Month Periods Ended September 30, Ended September 30, Interest Interest Commodity Rate Commodity Rate Derivatives Derivatives Derivatives Derivatives 2021: Beginning balance $ 105 $ 41 $ 116 $ 62 Changes included in earnings (1) (18) (13) (34) (34) Changes in fair value recognized in OCI (6) — (13) — Changes in fair value recognized in net regulatory assets 12 — 21 — Purchases 1 — 2 — Settlements (62) — (60) — Ending balance $ 32 $ 28 $ 32 $ 28 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, Interest Interest Commodity Rate Commodity Rate Derivatives Derivatives Derivatives Derivatives 2020: Beginning balance $ 44 $ 78 $ 97 $ 14 Changes included in earnings (1) (7) 10 (11) 74 Changes in fair value recognized in net regulatory assets 20 — (36) — Purchases 1 — 4 — Settlements 38 — 42 — Ending balance $ 96 $ 88 $ 96 $ 88 (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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 50,098 $ 57,902 $ 49,866 $ 60,633
PAC
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 September 30, 2021 Assets: Commodity derivatives $ — $ 204 $ — $ (11) $ 193 Money market mutual funds 876 — — — 876 Investment funds 31 — — — 31 $ 907 $ 204 $ — $ (11) $ 1,100 Liabilities - Commodity derivatives $ — $ (55) $ — $ 16 $ (39) As of December 31, 2020 Assets: Commodity derivatives $ — $ 36 $ — $ (3) $ 33 Money market mutual funds 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 $5 million and $24 million as of September 30, 2021 and December 31, 2020, respectively. 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 7 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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 9,199 $ 11,005 $ 8,612 $ 10,995
MEC
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 September 30, 2021: Assets: Commodity derivatives $ 1 $ 70 $ 4 $ (7) $ 68 Money market mutual funds 543 — — — 543 Debt securities: United States government obligations 228 — — — 228 International government obligations — 2 — — 2 Corporate obligations — 86 — — 86 Municipal obligations — 3 — — 3 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 398 — — — 398 International companies 8 — — — 8 Investment funds 23 — — — 23 $ 1,201 $ 162 $ 4 $ (7) $ 1,360 Liabilities - commodity derivatives $ (2) $ (5) $ (4) $ 7 $ (4) 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 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 September 30, 2021 and December 31, 2020, respectively. 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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,716 $ 9,101 $ 7,210 $ 9,130
MidAmerican Funding, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements Refer to Note 8 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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,956 $ 9,417 $ 7,450 $ 9,466
NPC
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 September 30, 2021 Assets: Commodity derivatives $ — $ — $ 4 $ 4 Money market mutual funds 74 — — 74 Investment funds 3 — — 3 $ 77 $ — $ 4 $ 81 Liabilities - commodity derivatives $ — $ — $ (18) $ (18) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 26 $ 26 Money market mutual funds 21 — — 21 Investment funds 2 — — 2 $ 23 $ — $ 26 $ 49 Liabilities - commodity derivatives $ — $ — $ (11) $ (11) 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 September 30, 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Beginning balance $ 25 $ (44) $ 15 $ (8) Changes in fair value recognized in regulatory assets 6 13 11 (31) Settlements (45) 31 (40) 39 Ending balance $ (14) $ — $ (14) $ — 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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,498 $ 3,122 $ 2,496 $ 3,245
SPPC
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 September 30, 2021 Assets: Commodity derivatives $ — $ — $ 2 $ 2 Money market mutual funds 11 — — 11 Investment funds 1 — — 1 $ 12 $ — $ 2 $ 14 Liabilities - commodity derivatives $ — $ — $ (2) $ (2) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 9 $ 9 Money market mutual funds 17 — — 17 $ 17 $ — $ 9 $ 26 Liabilities - commodity derivatives $ — $ — $ (2) $ (2) 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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,164 $ 1,328 $ 1,164 $ 1,358
EEGH
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 September 30, 2021 Assets: Foreign currency exchange rate derivatives $ — $ 8 $ — $ 8 Money market mutual funds 75 — — 75 Investment funds 13 — — 13 $ 88 $ 8 $ — $ 96 Liabilities: Commodity derivatives $ — $ (1) $ — $ (1) Foreign currency exchange rate derivatives — (4) — (4) $ — $ (5) $ — $ (5) 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) 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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 3,910 $ 4,327 $ 4,425 $ 5,012

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2021
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Construction Commitments During the nine-month period ended September 30, 2021, MidAmerican Energy entered into firm construction commitments totaling $405 million through the remainder of 2021 and 2022 related to the repowering and construction of wind-powered generating facilities and the construction of solar-powered generating facilities. Easements During the nine-month period ended September 30, 2021, MidAmerican Energy entered into non-cancelable easements with minimum payment commitments totaling $87 million through 2061 for land in Iowa on which some of its wind- and solar-powered generating facilities will be located. 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 "2020 Wildfires"). 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 destroyed, including residences; 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 September 30, 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. In June 2021, the FERC approved transfer of the four mainstem Klamath dams from PacifiCorp to the KRRC and the States as co-licensees. The transfer will be effective after PacifiCorp secures property transfer approvals from its state public utility commissions and 30 days following the issuance of a license surrender order from the FERC for the project. In July 2021, the Oregon, Wyoming, Idaho and California state public utility commissions approved the property transfer. In August 2021, PacifiCorp notified the Public Service Commission of Utah of the property transfer, however no formal approval is required in Utah. Guarantees
PAC
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 "2020 Wildfires"). 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 destroyed, including residences; 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 September 30, 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. In June 2021, the FERC approved transfer of the four mainstem Klamath dams from PacifiCorp to the KRRC and the States as co-licensees. The transfer will be effective after PacifiCorp secures property transfer approvals from its state public utility commissions and 30 days following the issuance of a license surrender order from the FERC for the project. In July 2021, the Oregon, Wyoming, Idaho and California state public utility commissions approved the property transfer. In August 2021, PacifiCorp notified the Public Service Commission of Utah of the property transfer, however no formal approval is required in Utah. 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.
MEC
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Construction Commitments During the nine-month period ended September 30, 2021, MidAmerican Energy entered into firm construction commitments totaling $405 million through the remainder of 2021 and 2022 related to the repowering and construction of wind-powered generating facilities and the construction of solar-powered generating facilities. Easements During the nine-month period ended September 30, 2021, MidAmerican Energy entered into non-cancelable easements with minimum payment commitments totaling $87 million through 2061 for land in Iowa on which some of its wind- and solar-powered generating facilities will be located. 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
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 9 of MidAmerican Energy's Notes to Financial Statements.
NPC
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.
SPPC
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.
EEGH
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	9 Months Ended
	Sep. 30, 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 and nonregulated, with further disaggregation of regulated 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 September 30, 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 $ 1,352 $ 736 $ 1,008 $ — $ — $ — $ — $ — $ 3,096 Retail gas — 84 16 — — — — — 100 Wholesale 58 113 19 — 14 — — (1) 203 Transmission and 55 15 35 241 — 175 — — 521 Interstate pipeline — — — — 514 — — (28) 486 Other 26 — — — (2) — — — 24 Total Regulated 1,491 948 1,078 241 526 175 — (29) 4,430 Nonregulated — 2 — 8 257 12 288 141 708 Total Customer Revenue 1,491 950 1,078 249 783 187 288 112 5,138 Other revenue — 16 7 28 2 (2) 28 8 87 Total $ 1,491 $ 966 $ 1,085 $ 277 $ 785 $ 185 $ 316 $ 120 $ 5,225 For the Nine-Month Period Ended September 30, 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 $ 3,685 $ 1,704 $ 2,227 $ — $ — $ — $ — $ (1) $ 7,615 Retail gas — 633 74 — — — — — 707 Wholesale 124 307 44 — 31 — — (2) 504 Transmission and 117 45 78 747 — 525 — — 1,512 Interstate pipeline — — — — 1,787 — — (94) 1,693 Other 80 — 1 — (1) — — — 80 Total Regulated 4,006 2,689 2,424 747 1,817 525 — (97) 12,111 Nonregulated — 13 1 26 726 27 693 452 1,938 Total Customer Revenue 4,006 2,702 2,425 773 2,543 552 693 355 14,049 Other revenue 25 24 18 84 41 (5) 80 59 326 Total $ 4,031 $ 2,726 $ 2,443 $ 857 $ 2,584 $ 547 $ 773 $ 414 $ 14,375 For the Three-Month Period Ended September 30, 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 $ 1,344 $ 661 $ 977 $ — $ — $ — $ — $ (1) $ 2,981 Retail gas — 70 14 — — — — — 84 Wholesale 59 56 14 — — — — 1 130 Transmission and 33 15 30 208 — 169 — — 455 Interstate pipeline — — — — 264 — — (29) 235 Other 42 — — — — — — — 42 Total Regulated 1,478 802 1,035 208 264 169 — (29) 3,927 Nonregulated — 4 (1) 6 — 6 270 145 430 Total Customer Revenue 1,478 806 1,034 214 264 175 270 116 4,357 Other revenue 1 6 8 32 — — 39 8 94 Total $ 1,479 $ 812 $ 1,042 $ 246 $ 264 $ 175 $ 309 $ 124 $ 4,451 For the Nine-Month Period Ended September 30, 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 $ 3,532 $ 1,539 $ 2,144 $ — $ — $ — $ — $ (1) $ 7,214 Retail gas — 341 81 — — — — — 422 Wholesale 76 157 34 — — — — (1) 266 Transmission and 79 48 75 632 — 502 — — 1,336 Interstate pipeline — — — — 885 — — (103) 782 Other 88 — 1 — — — — — 89 Total Regulated 3,775 2,085 2,335 632 885 502 — (105) 10,109 Nonregulated — 13 1 18 — 14 641 394 1,081 Total Customer Revenue 3,775 2,098 2,336 650 885 516 641 289 11,190 Other revenue 54 16 23 83 5 — 90 43 314 Total $ 3,829 $ 2,114 $ 2,359 $ 733 $ 890 $ 516 $ 731 $ 332 $ 11,504 (1) The BHE and Other reportable segment represents amounts related principally to other entities, including MidAmerican Energy Services, LLC, 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Brokerage $ 1,563 $ 1,449 $ 4,154 $ 3,183 Franchise 23 23 65 54 Total Customer Revenue 1,586 1,472 4,219 3,237 Mortgage and other revenue 157 270 519 591 Total $ 1,743 $ 1,742 $ 4,738 $ 3,828 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 September 30, 2021, by reportable segment (in millions): Performance obligations expected to be satisfied: Less than 12 months More than 12 months Total BHE Pipeline Group $ 2,586 $ 21,377 $ 23,963 BHE Transmission 175 — 175 Total $ 2,761 $ 21,377 $ 24,138
PAC
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 line of business, with further disaggregation of retail by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Retail: Residential $ 530 $ 519 $ 1,442 $ 1,363 Commercial 428 418 1,180 1,122 Industrial 296 293 849 838 Other retail 98 114 214 209 Total retail 1,352 1,344 3,685 3,532 Wholesale 58 59 124 76 Transmission 55 33 117 79 Other Customer Revenue 26 42 80 88 Total Customer Revenue 1,491 1,478 4,006 3,775 Other revenue — 1 25 54 Total operating revenue $ 1,491 $ 1,479 $ 4,031 $ 3,829
MEC
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, with further disaggregation of retail by customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 11 (in millions): For the Three-Month Period Ended September 30, 2021 For the Nine-Month Period Ended September 30, 2021 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 255 $ 52 $ — $ 307 $ 586 $ 419 $ — $ 1,005 Commercial 107 17 — 124 258 164 — 422 Industrial 321 5 — 326 741 20 — 761 Natural gas transportation services — 9 — 9 — 28 — 28 Other retail (1) 53 1 — 54 119 2 — 121 Total retail 736 84 — 820 1,704 633 — 2,337 Wholesale 88 25 — 113 214 93 — 307 Multi-value transmission projects 15 — — 15 45 — — 45 Other Customer Revenue — — 2 2 — — 13 13 Total Customer Revenue 839 109 2 950 1,963 726 13 2,702 Other revenue 15 1 — 16 22 2 — 24 Total operating revenue $ 854 $ 110 $ 2 $ 966 $ 1,985 $ 728 $ 13 $ 2,726 For the Three-Month Period Ended September 30, 2020 For the Nine-Month Period Ended September 30, 2020 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 241 $ 46 $ — $ 287 $ 555 $ 233 $ — $ 788 Commercial 99 13 — 112 242 71 — 313 Industrial 280 2 — 282 640 9 — 649 Natural gas transportation services — 8 — 8 — 26 — 26 Other retail (1) 42 1 — 43 103 2 — 105 Total retail 662 70 — 732 1,540 341 — 1,881 Wholesale 46 10 — 56 116 41 — 157 Multi-value transmission projects 14 — — 14 47 — — 47 Other Customer Revenue — — 4 4 — — 5 5 Total Customer Revenue 722 80 4 806 1,703 382 5 2,090 Other revenue 6 — — 6 14 2 — 16 Total operating revenue $ 728 $ 80 $ 4 $ 812 $ 1,717 $ 384 $ 5 $ 2,106 (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
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with CustomersRefer to Note 10 of MidAmerican Energy's Notes to Financial Statements. Additionally, MidAmerican Funding had other Accounting Standards Codification Topic 606 revenue of $— million for the three-month periods ended September 30, 2021 and 2020, respectively, and $— million and $8 million for the nine-month periods ended September 30, 2021 and 2020, respectively.
NPC
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 line of business, with further disaggregation of retail by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Retail: Residential $ 477 $ 495 $ 998 $ 993 Commercial 129 127 323 317 Industrial 152 147 310 300 Other 4 3 10 8 Total fully bundled 762 772 1,641 1,618 Distribution only service 6 8 17 20 Total retail 768 780 1,658 1,638 Wholesale, transmission and other 28 21 57 48 Total Customer Revenue 796 801 1,715 1,686 Other revenue 6 7 16 20 Total revenue $ 802 $ 808 $ 1,731 $ 1,706
SPPC
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 line of business, with further disaggregation of retail by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 10 (in millions): Three-Month Periods Ended September 30, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 91 $ 11 $ 102 $ 76 $ 11 $ 87 Commercial 84 3 87 71 3 74 Industrial 71 2 73 57 1 58 Other 1 — 1 1 — 1 Total fully bundled 247 16 263 205 15 220 Distribution only service 1 — 1 1 — 1 Total retail 248 16 264 206 15 221 Wholesale, transmission and other 18 — 18 13 — 13 Total Customer Revenue 266 16 282 219 15 234 Other revenue — — — 1 — 1 Total revenue $ 266 $ 16 $ 282 $ 220 $ 15 $ 235 Nine-Month Periods Ended September 30, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 229 $ 50 $ 279 $ 208 $ 54 $ 262 Commercial 202 18 220 183 20 203 Industrial 151 6 157 132 8 140 Other 4 — 4 3 — 3 Total fully bundled 586 74 660 526 82 608 Distribution only service 2 — 2 3 — 3 Total retail 588 74 662 529 82 611 Wholesale, transmission and other 46 — 46 37 — 37 Total Customer Revenue 634 74 708 566 82 648 Other revenue 2 1 3 3 1 4 Total revenue $ 636 $ 75 $ 711 $ 569 $ 83 $ 652
EEGH
Disaggregation of Revenue [Line Items]
Revenue from Contracts with Customers	Revenue from Contracts with Customers The following table summarizes Eastern Energy Gas' revenue from contracts with customers ("Customer Revenue") by regulated and nonregulated, with further disaggregation of regulated by line of business (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Regulated: Gas transportation and storage $ 249 $ 311 $ 774 $ 957 Wholesale 14 25 31 27 Other 1 1 (1) 4 Total regulated 264 337 804 988 Nonregulated 193 193 573 606 Total Customer Revenue 457 530 1,377 1,594 Other revenue (1) 1 2 3 Total operating revenue $ 456 $ 531 $ 1,379 $ 1,597 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 September 30, 2021 (in millions): Performance obligations expected to be satisfied Less than 12 months More than 12 months Total Eastern Energy Gas $ 1,574 $ 16,413 $ 17,987

BHE Shareholders' Equity

BHE Shareholders' Equity	9 Months Ended
	Sep. 30, 2021
Equity [Abstract]
BHE Shareholders' Equity	BHE Shareholders' Equity On July 22, 2021, BHE redeemed at par 1,450,003 shares of its 4.00% Perpetual Preferred Stock from certain subsidiaries of Berkshire Hathaway Inc. for $1.45 billion, plus an additional amount equal to the accrued dividends on the pro rata shares redeemed.

Components of Other Comprehensi

Components of Other Comprehensive Income (Loss), Net	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Other Comprehensive Income (Loss), Net	Components of Other Comprehensive Income (Loss), Net The following table shows the change in accumulated other comprehensive income (loss) 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 Noncontrolling To BHE Benefits Adjustment Flow Hedges Interests Shareholders, Net Balance, December 31, 2019 $ (417) $ (1,296) $ 7 $ — $ (1,706) Other comprehensive income (loss) 38 (195) (20) — (177) Balance, September 30, 2020 $ (379) $ (1,491) $ (13) $ — $ (1,883) Balance, December 31, 2020 $ (492) $ (1,062) $ (8) $ 10 $ (1,552) Other comprehensive income (loss) 44 (59) 48 (4) 29 Balance, September 30, 2021 $ (448) $ (1,121) $ 40 $ 6 $ (1,523)
EEGH
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of 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 (loss) income (1) 24 — 23 Balance, September 30, 2020 $ (107) $ (57) $ — $ (164) Balance, December 31, 2020 $ (12) $ (51) $ 10 $ (53) Other comprehensive income (loss) 4 11 (4) 11 Balance, September 30, 2021 $ (8) $ (40) $ 6 $ (42)

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2021
Segment Reporting Information [Line Items]
Segment Information	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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: PacifiCorp $ 1,491 $ 1,479 $ 4,031 $ 3,829 MidAmerican Funding 966 812 2,726 2,114 NV Energy 1,085 1,042 2,443 2,359 Northern Powergrid 277 246 857 733 BHE Pipeline Group 785 264 2,584 890 BHE Transmission 185 175 547 516 BHE Renewables 316 309 773 731 HomeServices 1,743 1,742 4,738 3,828 BHE and Other (1) 120 124 414 332 Total operating revenue $ 6,968 $ 6,193 $ 19,113 $ 15,332 Depreciation and amortization: PacifiCorp $ 272 $ 234 $ 811 $ 696 MidAmerican Funding 218 179 634 530 NV Energy 138 128 411 377 Northern Powergrid 73 69 217 195 BHE Pipeline Group 124 45 363 134 BHE Transmission 59 61 177 176 BHE Renewables 61 72 182 214 HomeServices 14 11 37 34 BHE and Other (1) 1 1 2 1 Total depreciation and amortization $ 960 $ 800 $ 2,834 $ 2,357 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating income: PacifiCorp $ 394 $ 361 $ 911 $ 851 MidAmerican Funding 287 232 438 444 NV Energy 348 347 563 587 Northern Powergrid 126 106 403 327 BHE Pipeline Group 303 101 1,166 442 BHE Transmission 90 79 256 236 BHE Renewables 149 143 279 244 HomeServices 135 239 426 336 BHE and Other (1) 2 (61) (67) (65) Total operating income 1,834 1,547 4,375 3,402 Interest expense (531) (504) (1,593) (1,490) Capitalized interest 18 24 46 60 Allowance for equity funds 34 50 90 122 Interest and dividend income 18 17 65 57 Gains on marketable securities, net 294 1,797 1,142 2,407 Other, net 8 36 64 61 Total income before income tax (benefit) expense and equity loss $ 1,675 $ 2,967 $ 4,189 $ 4,619 Interest expense: PacifiCorp $ 110 $ 107 $ 322 $ 319 MidAmerican Funding 81 79 237 238 NV Energy 51 56 154 171 Northern Powergrid 33 34 98 97 BHE Pipeline Group 33 15 111 44 BHE Transmission 39 38 117 111 BHE Renewables 39 41 119 125 HomeServices 1 1 3 9 BHE and Other (1) 144 133 432 376 Total interest expense $ 531 $ 504 $ 1,593 $ 1,490 Earnings on common shares: PacifiCorp $ 333 $ 286 $ 728 $ 629 MidAmerican Funding 373 337 728 695 NV Energy 282 249 416 367 Northern Powergrid 83 26 162 172 BHE Pipeline Group 144 78 627 321 BHE Transmission 65 58 184 173 BHE Renewables 163 162 360 395 HomeServices 102 177 321 246 BHE and Other (1) 351 1,469 580 1,630 Total earnings on common shares $ 1,896 $ 2,842 $ 4,106 $ 4,628 As of September 30, December 31, 2021 2020 Assets: PacifiCorp $ 28,230 $ 26,862 MidAmerican Funding 25,038 23,530 NV Energy 15,105 14,501 Northern Powergrid 9,043 8,782 BHE Pipeline Group 19,993 19,541 BHE Transmission 9,383 9,208 BHE Renewables 11,766 12,004 HomeServices 5,065 4,955 BHE and Other (1) 7,931 7,933 Total assets $ 131,554 $ 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue by country: United States $ 6,499 $ 5,773 $ 17,700 $ 14,086 United Kingdom 277 246 857 733 Canada 180 174 537 512 Philippines and other 12 — 19 1 Total operating revenue by country $ 6,968 $ 6,193 $ 19,113 $ 15,332 Income before income tax (benefit) expense and equity loss by country: United States $ 1,511 $ 2,839 $ 3,699 $ 4,220 United Kingdom 107 82 343 250 Canada 49 44 134 130 Philippines and other 8 2 13 19 Total income before income tax (benefit) expense and equity loss by country $ 1,675 $ 2,967 $ 4,189 $ 4,619 The following table shows the change in the carrying amount of goodwill by reportable segment for the nine-month period ended September 30, 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 — — — — 11 — — 59 70 Foreign currency translation — — — (10) — 6 — — (4) September 30, 2021 $ 1,129 $ 2,102 $ 2,369 $ 990 $ 1,814 $ 1,557 $ 95 $ 1,516 $ 11,572
MEC
Segment Reporting Information [Line Items]
Segment Information	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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: Regulated electric $ 854 $ 728 $ 1,985 $ 1,717 Regulated natural gas 110 80 728 384 Other 2 4 13 5 Total operating revenue $ 966 $ 812 $ 2,726 $ 2,106 Operating income: Regulated electric $ 289 $ 238 $ 401 $ 398 Regulated natural gas (2) (6) 37 40 Total operating income 287 232 438 438 Interest expense (76) (74) (224) (224) Allowance for borrowed funds 4 5 8 12 Allowance for equity funds 11 16 25 33 Other, net 8 14 34 30 Income before income tax benefit $ 234 $ 193 $ 281 $ 289 As of September 30, December 31, Assets: Regulated electric $ 21,063 $ 19,892 Regulated natural gas 1,874 1,544 Other 7 1 Total assets $ 22,944 $ 21,437
MidAmerican Funding, LLC
Segment Reporting Information [Line Items]
Segment Information	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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: Regulated electric $ 854 $ 728 $ 1,985 $ 1,717 Regulated natural gas 110 80 728 384 Other 2 4 13 13 Total operating revenue $ 966 $ 812 $ 2,726 $ 2,114 Operating income: Regulated electric $ 289 $ 238 $ 401 $ 398 Regulated natural gas (2) (6) 37 40 Other — — — 6 Total operating income 287 232 438 444 Interest expense (81) (79) (237) (238) Allowance for borrowed funds 4 5 8 12 Allowance for equity funds 11 16 25 33 Other, net 8 15 34 30 Income before income tax benefit $ 229 $ 189 $ 268 $ 281 As of September 30, December 31, Assets (1) : Regulated electric $ 22,254 $ 21,083 Regulated natural gas 1,953 1,623 Other 11 5 Total assets $ 24,218 $ 22,711 (1) Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
SPPC
Segment Reporting Information [Line Items]
Segment Information	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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: Regulated electric $ 266 $ 220 $ 636 $ 569 Regulated natural gas 16 15 75 83 Total operating revenue $ 282 $ 235 $ 711 $ 652 Operating income: Regulated electric $ 74 $ 66 $ 126 $ 119 Regulated natural gas 1 2 13 12 Total operating income 75 68 139 131 Interest expense (14) (14) (41) (42) Allowance for borrowed funds 1 — 2 1 Allowance for equity funds 2 1 5 3 Interest and dividend income 3 1 6 3 Other, net 3 2 9 4 Income before income tax expense $ 70 $ 58 $ 120 $ 100 As of September 30, December 31, 2021 2020 Assets: Regulated electric $ 3,744 $ 3,540 Regulated natural gas 354 342 Other (1) 32 37 Total assets $ 4,130 $ 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	9 Months Ended
	Sep. 30, 2021
EEGH
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 for each of the three-month periods ended September 30, 2021 and 2020, and $9 million and $10 million for the nine-month periods ended September 30, 2021 and 2020, respectively. Eastern Energy Gas' Consolidated Balance Sheets included amounts due to Carolina Gas Services of $31 million and $22 million as of September 30, 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 and $21 million for the three- and nine-month periods ended September 30, 2020, respectively. 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 $22 million and $80 million for the three- and nine-month periods ended September 30, 2020, respectively. 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	9 Months Ended
	Sep. 30, 2021
EEGH
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 7. 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 and nine-month periods ended September 30, 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- and nine-month periods ended September 30, 2020 (in millions): Three-Month Period Nine-Month Period Ended September 30, 2020 Ended September 30, 2020 Sales of natural gas and transportation and storage services $ 60 $ 188 Purchases of natural gas and transportation and storage services 3 9 Services provided by related parties (1) 34 114 Services provided to related parties (2) 17 78 (1) Includes capitalized expenditures of $5 million and $12 million for the three- and nine-month periods ended September 30, 2020, respectively. (2) Amounts primarily attributable to Atlantic Coast Pipeline, LLC, a related-party VIE prior to the GT&S Transaction. Interest income related to the affiliated notes receivable under the DEI money pool was $3 million for the nine-month period ended September 30, 2020. Interest income related to Eastern Energy Gas' affiliated notes receivable from DEI was $9 million and $32 million for the three- and nine-month periods ended September 30, 2020, respectively. Interest income related to Eastern Energy Gas' affiliated notes receivable from East Ohio Gas Company was $33 million for the nine-month period ended September 30, 2020. Interest charges related to Eastern Energy Gas' total borrowings under an intercompany revolving credit agreement with DEI were $3 million for the nine-month period ended September 30, 2020. Interest charges related to CPMLP Holdings Company, LLC's total borrowings from DES were $3 million for the nine-month period ended September 30, 2020. For the nine-month period ended September 30, 2020, Eastern Energy Gas distributed $4.2 billion 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 $31 million and $20 million as of September 30, 2021 and December 31, 2020, respectively. Other assets included amounts due from an affiliate of $4 million and $7 million as of September 30, 2021 and December 31, 2020, respectively. As of September 30, 2021, Eastern Energy Gas had $3 million of natural gas imbalances payable to affiliates, presented in other current liabilities on the Consolidated Balance Sheet. Presented below are Eastern Energy Gas' significant transactions with affiliated and related parties for the three- and nine-month periods ended September 30, 2021 (in millions): Three-Month Period Nine-Month Period Ended September 30, 2021 Ended September 30, 2021 Sales of natural gas and transportation and storage services $ 7 $ 21 Purchases of natural gas and transportation and storage services 1 4 Services provided by related parties 16 31 Services provided to related parties 8 24 Eastern Energy Gas has a $400 million intercompany revolving credit agreement from its parent, BHE GT&S, LLC ("BHE GT&S") expiring in November 2022. The credit facility, which is for general corporate purposes and provides 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 September 30, 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 2022. 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 September 30, 2021 and December 31, 2020, $28 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 7. As of September 30, 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.

General (Policies)

General (Policies)	9 Months Ended
	Sep. 30, 2021
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Basis of Accounting	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 2021 are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	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.
PAC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Basis of Accounting	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income materially equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 2021 and 2020 are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	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.
MEC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Basis of Accounting	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 September 30, 2021, and for the three- and nine-month periods ended September 30, 2021 and 2020. The Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 2021, are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	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.
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 September 30, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation.
MidAmerican Funding, LLC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Basis of Accounting	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 September 30, 2021, and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income materially equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 2021, are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	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.
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 September 30, 2021 and December 31, 2020, consist substantially of funds restricted for wildlife preservation.
NPC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Basis of Accounting	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 2021 are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	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.
SPPC
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Basis of Accounting	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The Consolidated Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 2021 are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	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.
EEGH
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Basis of Accounting	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 September 30, 2021 and for the three- and nine-month periods ended September 30, 2021 and 2020. The results of operations for the three- and nine-month periods ended September 30, 2021 are not necessarily indicative of the results to be expected for the full year.
Use of Estimates	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.

Business Acquisition (Tables)

Business Acquisition (Tables)	9 Months Ended
	Sep. 30, 2021
Business Combinations [Abstract]
Schedule of Recognized Identified Assets Acquired and Liabilities Assumed	The following table summarizes the 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 $ 582 Property, plant and equipment 9,264 Goodwill 1,741 Regulatory assets 108 Deferred income taxes 284 Other long-term assets 1,424 Total assets 13,403 Current liabilities, including current portion of long-term debt of $1,200 1,616 Long-term debt, less current portion 4,415 Regulatory liabilities 650 Other long-term liabilities 292 Total liabilities 6,973 Noncontrolling interest 3,916 Net assets acquired $ 2,514
Summary of 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): Nine-Month Period Ended September 30, 2020 Operating revenue $ 16,791 Net income attributable to BHE shareholders $ 4,468

Cash and Cash Equivalents and_2

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents (Tables)	9 Months Ended
	Sep. 30, 2021
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 2,709 $ 1,290 Restricted cash and cash equivalents 216 140 Investments and restricted cash and cash equivalents and investments 17 15 Total cash and cash equivalents and restricted cash and cash equivalents $ 2,942 $ 1,445
PAC
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 893 $ 13 Restricted cash included in other current assets 4 4 Restricted cash included in other assets 2 2 Total cash and cash equivalents and restricted cash and cash equivalents $ 899 $ 19
MEC
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 541 $ 38 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 548 $ 45
MidAmerican Funding, LLC
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 542 $ 39 Restricted cash and cash equivalents in other current assets 7 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 549 $ 46
NPC
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 85 $ 25 Restricted cash and cash equivalents included in other current assets 9 11 Total cash and cash equivalents and restricted cash and cash equivalents $ 94 $ 36
SPPC
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 14 $ 19 Restricted cash and cash equivalents included in other current assets 6 7 Total cash and cash equivalents and restricted cash and cash equivalents $ 20 $ 26
EEGH
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 90 $ 35 Restricted cash and cash equivalents 17 13 Total cash and cash equivalents and restricted cash and cash equivalents $ 107 $ 48

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 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 September 30, December 31, Life 2021 2020 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 89,026 $ 86,730 Interstate natural gas pipeline assets 3-80 years 17,044 16,667 106,070 103,397 Accumulated depreciation and amortization (32,444) (30,662) Regulated assets, net 73,626 72,735 Nonregulated assets: Independent power plants 5-30 years 7,058 7,012 Other assets 3-40 years 5,951 5,659 13,009 12,671 Accumulated depreciation and amortization (2,916) (2,586) Nonregulated assets, net 10,093 10,085 Net operating assets 83,719 82,820 Construction work-in-progress 4,343 3,308 Property, plant and equipment, net $ 88,062 $ 86,128
PAC
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 September 30, December 31, Depreciable Life 2021 2020 Utility Plant: Generation 15 - 59 years $ 13,635 $ 12,861 Transmission 60 - 90 years 7,833 7,632 Distribution 20 - 75 years 7,889 7,660 Intangible plant (1) 5 - 75 years 1,083 1,054 Other 5 - 60 years 1,535 1,510 Utility plant in service 31,975 30,717 Accumulated depreciation and amortization (10,370) (9,838) Utility plant in service, net 21,605 20,879 Other non-regulated, net of accumulated depreciation and amortization 14 - 95 years 9 9 Plant, net 21,614 20,888 Construction work-in-progress 1,134 1,542 Property, plant and equipment, net $ 22,748 $ 22,430 (1) Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.
MEC
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 September 30, December 31, Depreciable Life 2021 2020 Utility plant in service, net: Generation 20-70 years $ 17,162 $ 16,980 Transmission 52-75 years 2,415 2,365 Electric distribution 20-75 years 4,522 4,369 Natural gas distribution 29-75 years 2,011 1,955 Utility plant in service 26,110 25,669 Accumulated depreciation and amortization (7,444) (6,902) Utility plant in service, net 18,666 18,767 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1) (1) Nonregulated property, net 6 6 18,672 18,773 Construction work-in-progress 1,101 506 Property, plant and equipment, net $ 19,773 $ 19,279
NPC
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 September 30, December 31, 2021 2020 Utility plant: Generation 30 - 55 years $ 3,780 $ 3,690 Transmission 45 - 70 years 1,493 1,468 Distribution 20 - 65 years 3,878 3,771 General and intangible plant 5 - 65 years 810 791 Utility plant 9,961 9,720 Accumulated depreciation and amortization (3,350) (3,162) Utility plant, net 6,611 6,558 Other non-regulated, net of accumulated depreciation and amortization 45 years 1 1 Plant, net 6,612 6,559 Construction work-in-progress 217 142 Property, plant and equipment, net $ 6,829 $ 6,701
SPPC
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 September 30, December 31, 2021 2020 Utility plant: Electric generation 25 - 60 years $ 1,140 $ 1,130 Electric transmission 50 - 100 years 914 908 Electric distribution 20 - 100 years 1,806 1,754 Electric general and intangible plant 5 - 70 years 199 189 Natural gas distribution 35 - 70 years 433 429 Natural gas general and intangible plant 5 - 70 years 15 15 Common general 5 - 70 years 361 355 Utility plant 4,868 4,780 Accumulated depreciation and amortization (1,834) (1,755) Utility plant, net 3,034 3,025 Other non-regulated, net of accumulated depreciation and amortization 70 years — 2 Plant, net 3,034 3,027 Construction work-in-progress 231 137 Property, plant and equipment, net $ 3,265 $ 3,164
EEGH
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment	Property, plant and equipment, net consists of the following (in millions): As of September 30, December 31, Depreciable Life 2021 2020 Utility Plant: Interstate natural gas pipeline assets 24 - 43 years $ 8,555 $ 8,382 Intangible plant 5 - 10 years 111 115 Utility plant in service 8,666 8,497 Accumulated depreciation and amortization (2,859) (2,759) Utility plant in service, net 5,807 5,738 Nonutility Plant: LNG facility 40 years 4,466 4,454 Intangible plant 14 years 25 25 Nonutility plant in service 4,491 4,479 Accumulated depreciation and amortization (396) (283) Nonutility plant in service, net 4,095 4,196 Plant, net 9,902 9,934 Construction work-in-progress 293 210 Property, plant and equipment, net $ 10,195 $ 10,144

Investments and Restricted Ca_2

Investments and Restricted Cash and Cash Equivalents and Investments (Tables)	9 Months Ended
	Sep. 30, 2021
Restricted Cash and Cash Equivalents Items [Line Items]
Investments and Restricted Cash	Investments and restricted cash and cash equivalents and investments consists of the following (in millions): As of September 30, December 31, 2021 2020 Investments: BYD Company Limited common stock $ 7,023 $ 5,897 Rabbi trusts 473 440 Other 295 263 Total investments 7,791 6,600 Equity method investments: BHE Renewables tax equity investments 5,253 5,626 Iroquois Gas Transmission System, L.P. 583 580 Electric Transmission Texas, LLC 578 594 JAX LNG, LLC 87 75 Bridger Coal Company 60 74 Other 163 118 Total equity method investments 6,724 7,067 Restricted cash and cash equivalents and investments: Quad Cities Station nuclear decommissioning trust funds 727 676 Other restricted cash and cash equivalents 233 155 Total restricted cash and cash equivalents and investments 960 831 Total investments and restricted cash and cash equivalents and investments $ 15,475 $ 14,498 Reflected as: Current assets $ 257 $ 178 Noncurrent assets 15,218 14,320 Total investments and restricted cash and cash equivalents and investments $ 15,475 $ 14,498
Unrealized Gain (Loss) on Investments	Gains on marketable securities, net recognized during the period consists of the following (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Unrealized gains recognized on marketable securities still held at the reporting date $ 294 $ 1,794 $ 1,141 $ 2,403 Net gains recognized on marketable securities sold during the period — 3 1 4 Gains on marketable securities, net $ 294 $ 1,797 $ 1,142 $ 2,407
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 2,709 $ 1,290 Restricted cash and cash equivalents 216 140 Investments and restricted cash and cash equivalents and investments 17 15 Total cash and cash equivalents and restricted cash and cash equivalents $ 2,942 $ 1,445
EEGH
Restricted Cash and Cash Equivalents Items [Line Items]
Investments and Restricted Cash	Investments and restricted cash and cash equivalents consists of the following (in millions): As of September 30, December 31, 2021 2020 Investments: Investment funds $ 13 $ — Equity method investments: Iroquois 246 244 Total investments 259 244 Restricted cash and cash equivalents: Customer deposits 17 13 Total restricted cash and cash equivalents 17 13 Total investments and restricted cash and cash equivalents $ 276 $ 257 Reflected as: Current assets $ 17 $ 13 Noncurrent assets 259 244 Total investments and restricted cash and cash equivalents $ 276 $ 257
Schedule of Cash and Cash Equivalents	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 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 September 30, December 31, 2021 2020 Cash and cash equivalents $ 90 $ 35 Restricted cash and cash equivalents 17 13 Total cash and cash equivalents and restricted cash and cash equivalents $ 107 $ 48

Recent Financing Transactions (

Recent Financing Transactions (Tables)	9 Months Ended
	Sep. 30, 2021
EEGH
Debt Instrument [Line Items]
Schedule of Long-term Debt Instruments	The following table details the exchanged notes prior to, and subsequent to, the transaction (in millions): Prior to Exchange Subsequent to Exchange Eastern Energy Gas Par Value Eastern Energy Gas Par Value EGTS Par Value 3.6% Senior Notes due 2024 $ 450 $ 339 $ 111 3.0% Senior Notes due 2029 600 174 426 4.8% Senior Notes due 2043 400 54 346 4.6% Senior Notes due 2044 500 56 444 3.9% Senior Notes due 2049 300 27 273 $ 2,250 $ 650 $ 1,600

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 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) expense is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (31) (20) (29) (23) State income tax, net of federal income tax impacts (4) 3 — 2 Income tax effect of foreign income (1) 1 2 — Effects of ratemaking (6) (2) (5) (2) Equity income — — (1) — Noncontrolling interest (1) — (2) — Other, net 1 — 1 — Effective income tax rate (21) % 3 % (13) % (2) %
PAC
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) expense is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % State income tax, net of federal income tax benefit 4 3 4 3 Federal income tax credits (20) (15) (20) (12) Effects of ratemaking (13) (4) (14) (8) Other (1) 1 — 1 Effective income tax rate (9) % 6 % (9) % 5 %
MEC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (44) (55) (143) (122) State income tax, net of federal income tax impacts (26) (27) (27) (29) Effects of ratemaking (12) (15) (13) (13) Other, net — — — 1 Effective income tax rate (61) % (76) % (162) % (142) %
MidAmerican Funding, LLC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (45) (56) (150) (126) State income tax, net of federal income tax impacts (27) (27) (29) (30) Effects of ratemaking (12) (16) (14) (13) Other, net — — — 1 Effective income tax rate (63) % (78) % (172) % (147) %
NPC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Effects of ratemaking (10) — (10) — Effective income tax rate 11 % 21 % 11 % 21 %
SPPC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % Effects of ratemaking (10) (11) (10) (10) Other — — — (1) Effective income tax rate 11 % 10 % 11 % 10 %
EEGH
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 (benefit) is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Federal statutory income tax rate 21 % 21 % 21 % 21 % State income tax, net of federal income tax benefit 2 (3) 2 (29) Equity interest 1 — 1 8 Effects of ratemaking (1) (2) (1) (6) Change in tax status — (18) — (24) AFUDC-equity — — — (2) Noncontrolling interest (11) (6) (11) (24) Write-off of regulatory assets — — — 9 Other, net — (2) 1 (1) Effective income tax rate 12 % (10) % 13 % (48) %

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ 7 $ 4 $ 22 $ 11 Interest cost 21 23 59 69 Expected return on plan assets (32) (35) (101) (105) Settlement 4 — 4 — Net amortization 6 8 19 25 Net periodic benefit cost $ 6 $ — $ 3 $ — Other postretirement: Service cost $ 2 $ 1 $ 8 $ 5 Interest cost 4 6 14 16 Expected return on plan assets (5) (9) (16) (25) Net amortization — (1) (2) (5) Net periodic benefit cost (credit) $ 1 $ (3) $ 4 $ (9) Foreign Operations Net periodic benefit credit for the United Kingdom pension plan included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Service cost $ 4 $ 4 $ 12 $ 12 Interest cost 8 10 23 30 Expected return on plan assets (28) (26) (84) (76) Net amortization 14 11 42 32 Net periodic benefit credit $ (2) $ (1) $ (7) $ (2)
PAC
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures	Net periodic benefit cost (credit) for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ — $ — $ — $ — Interest cost 8 9 22 27 Expected return on plan assets (12) (14) (39) (42) Settlement 4 — 4 — Net amortization 5 4 15 13 Net periodic benefit cost (credit) $ 5 $ (1) $ 2 $ (2) Other postretirement: Service cost $ — $ — $ 1 $ 1 Interest cost 1 2 5 7 Expected return on plan assets (2) (3) (6) (10) Net amortization 1 — 1 — Net periodic benefit (credit) cost $ — $ (1) $ 1 $ (2)
MEC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ 5 $ 2 $ 15 $ 4 Interest cost 6 7 17 19 Expected return on plan assets (9) (10) (28) (30) Net amortization — — 1 1 Net periodic benefit cost (credit) $ 2 $ (1) $ 5 $ (6) Other postretirement: Service cost $ 2 $ 1 $ 6 $ 3 Interest cost 2 2 6 5 Expected return on plan assets (2) (4) (7) (10) Net amortization (1) (1) (3) (4) Net periodic benefit cost (credit) $ 1 $ (2) $ 2 $ (6)
NPC
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 September 30, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 11 $ 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
SPPC
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 September 30, December 31, 2021 2020 Qualified Pension Plan: Other non-current assets $ 31 $ 26 Non-Qualified Pension Plans: Other current liabilities (1) (1) Other long-term liabilities (8) (8) Other Postretirement Plans: Other long-term liabilities (13) (13)
EEGH
Defined Benefit Plan Disclosure [Line Items]
Schedule of Net Benefit Costs (Credits)	Net periodic benefit credit for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Pension: Service cost $ — $ 2 $ — $ 5 Interest cost — 3 — 8 Expected return on plan assets — (14) — (42) Net amortization — 1 — 5 Net periodic benefit credit $ — $ (8) $ — $ (24) Other Postretirement: Service cost $ — $ — $ — $ 1 Interest cost — 1 — 3 Expected return on plan assets — (4) — (14) Net amortization — (1) — (2) Net periodic benefit credit $ — $ (4) $ — $ (12)

Risk Management and Hedging A_2

Risk Management and Hedging Activities (Tables) - PAC	9 Months Ended
	Sep. 30, 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 September 30, 2021 Not designated as hedging contracts (1) : Commodity assets $ 159 $ 40 $ 4 $ 1 $ 204 Commodity liabilities — — (46) (9) (55) Total 159 40 (42) (8) 149 Total derivatives 159 40 (42) (8) 149 Cash collateral (payable) receivable (6) — 11 — 5 Total derivatives - net basis $ 153 $ 40 $ (31) $ (8) $ 154 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. As of September 30, 2021 a regulatory liability of $149 million was recorded related to the net derivative asset of $149 million. As of December 31, 2020 a regulatory asset of $17 million was recorded related to the net derivative liability of $17 million.
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Beginning balance $ (102) $ 68 $ 17 $ 62 Changes in fair value (128) (49) (247) (21) Net gains (losses) reclassified to operating revenue — 1 (5) 14 Net gains (losses) reclassified to cost of fuel and energy 81 (11) 86 (46) Ending balance $ (149) $ 9 $ (149) $ 9
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 September 30, December 31, Measure 2021 2020 Electricity sales, net Megawatt hours — (1) Natural gas purchases Decatherms 101 100

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 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 September 30, 2021 Assets: Commodity derivatives $ 15 $ 436 $ 88 $ (49) $ 490 Foreign currency exchange rate derivatives — 8 — — 8 Interest rate derivatives — 12 30 — 42 Mortgage loans held for sale — 1,687 — — 1,687 Money market mutual funds 2,017 — — — 2,017 Debt securities: United States government obligations 228 — — — 228 International government obligations — 2 — — 2 Corporate obligations — 86 — — 86 Municipal obligations — 3 — — 3 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 398 — — — 398 International companies 7,031 — — — 7,031 Investment funds 264 — — — 264 $ 9,953 $ 2,235 $ 118 $ (49) $ 12,257 Liabilities: Commodity derivatives $ (2) $ (134) $ (56) $ 80 $ (112) Foreign currency exchange rate derivatives — (4) — — (4) Interest rate derivatives (1) (11) (2) — (14) $ (3) $ (149) $ (58) $ 80 $ (130) 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 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 $31 million and $35 million as of September 30, 2021 and December 31, 2020, respectively.
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 Nine-Month Periods Ended September 30, Ended September 30, Interest Interest Commodity Rate Commodity Rate Derivatives Derivatives Derivatives Derivatives 2021: Beginning balance $ 105 $ 41 $ 116 $ 62 Changes included in earnings (1) (18) (13) (34) (34) Changes in fair value recognized in OCI (6) — (13) — Changes in fair value recognized in net regulatory assets 12 — 21 — Purchases 1 — 2 — Settlements (62) — (60) — Ending balance $ 32 $ 28 $ 32 $ 28 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, Interest Interest Commodity Rate Commodity Rate Derivatives Derivatives Derivatives Derivatives 2020: Beginning balance $ 44 $ 78 $ 97 $ 14 Changes included in earnings (1) (7) 10 (11) 74 Changes in fair value recognized in net regulatory assets 20 — (36) — Purchases 1 — 4 — Settlements 38 — 42 — Ending balance $ 96 $ 88 $ 96 $ 88 (1) Changes included in earnings for interest rate derivatives are reported net of amounts related to the satisfaction of the associated loan commitment.
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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 50,098 $ 57,902 $ 49,866 $ 60,633
PAC
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 September 30, 2021 Assets: Commodity derivatives $ — $ 204 $ — $ (11) $ 193 Money market mutual funds 876 — — — 876 Investment funds 31 — — — 31 $ 907 $ 204 $ — $ (11) $ 1,100 Liabilities - Commodity derivatives $ — $ (55) $ — $ 16 $ (39) As of December 31, 2020 Assets: Commodity derivatives $ — $ 36 $ — $ (3) $ 33 Money market mutual funds 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 $5 million and $24 million as of September 30, 2021 and December 31, 2020, respectively.
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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 9,199 $ 11,005 $ 8,612 $ 10,995
MEC
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 September 30, 2021: Assets: Commodity derivatives $ 1 $ 70 $ 4 $ (7) $ 68 Money market mutual funds 543 — — — 543 Debt securities: United States government obligations 228 — — — 228 International government obligations — 2 — — 2 Corporate obligations — 86 — — 86 Municipal obligations — 3 — — 3 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 398 — — — 398 International companies 8 — — — 8 Investment funds 23 — — — 23 $ 1,201 $ 162 $ 4 $ (7) $ 1,360 Liabilities - commodity derivatives $ (2) $ (5) $ (4) $ 7 $ (4) 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 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 September 30, 2021 and December 31, 2020, respectively.
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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,716 $ 9,101 $ 7,210 $ 9,130
MidAmerican Funding, LLC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, by Balance Sheet Grouping	The following table presents the carrying value and estimated fair value of MidAmerican Funding's long-term debt (in millions): As of September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Long-term debt $ 7,956 $ 9,417 $ 7,450 $ 9,466
NPC
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 September 30, 2021 Assets: Commodity derivatives $ — $ — $ 4 $ 4 Money market mutual funds 74 — — 74 Investment funds 3 — — 3 $ 77 $ — $ 4 $ 81 Liabilities - commodity derivatives $ — $ — $ (18) $ (18) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 26 $ 26 Money market mutual funds 21 — — 21 Investment funds 2 — — 2 $ 23 $ — $ 26 $ 49 Liabilities - commodity derivatives $ — $ — $ (11) $ (11)
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Beginning balance $ 25 $ (44) $ 15 $ (8) Changes in fair value recognized in regulatory assets 6 13 11 (31) Settlements (45) 31 (40) 39 Ending balance $ (14) $ — $ (14) $ —
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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,498 $ 3,122 $ 2,496 $ 3,245
SPPC
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 September 30, 2021 Assets: Commodity derivatives $ — $ — $ 2 $ 2 Money market mutual funds 11 — — 11 Investment funds 1 — — 1 $ 12 $ — $ 2 $ 14 Liabilities - commodity derivatives $ — $ — $ (2) $ (2) As of December 31, 2020 Assets: Commodity derivatives $ — $ — $ 9 $ 9 Money market mutual funds 17 — — 17 $ 17 $ — $ 9 $ 26 Liabilities - commodity derivatives $ — $ — $ (2) $ (2)
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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,164 $ 1,328 $ 1,164 $ 1,358
EEGH
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 September 30, 2021 Assets: Foreign currency exchange rate derivatives $ — $ 8 $ — $ 8 Money market mutual funds 75 — — 75 Investment funds 13 — — 13 $ 88 $ 8 $ — $ 96 Liabilities: Commodity derivatives $ — $ (1) $ — $ (1) Foreign currency exchange rate derivatives — (4) — (4) $ — $ (5) $ — $ (5) 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)
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 September 30, 2021 As of December 31, 2020 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 3,910 $ 4,327 $ 4,425 $ 5,012

Revenue from Contracts with C_2

Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2021
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated and nonregulated, with further disaggregation of regulated 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 September 30, 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 $ 1,352 $ 736 $ 1,008 $ — $ — $ — $ — $ — $ 3,096 Retail gas — 84 16 — — — — — 100 Wholesale 58 113 19 — 14 — — (1) 203 Transmission and 55 15 35 241 — 175 — — 521 Interstate pipeline — — — — 514 — — (28) 486 Other 26 — — — (2) — — — 24 Total Regulated 1,491 948 1,078 241 526 175 — (29) 4,430 Nonregulated — 2 — 8 257 12 288 141 708 Total Customer Revenue 1,491 950 1,078 249 783 187 288 112 5,138 Other revenue — 16 7 28 2 (2) 28 8 87 Total $ 1,491 $ 966 $ 1,085 $ 277 $ 785 $ 185 $ 316 $ 120 $ 5,225 For the Nine-Month Period Ended September 30, 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 $ 3,685 $ 1,704 $ 2,227 $ — $ — $ — $ — $ (1) $ 7,615 Retail gas — 633 74 — — — — — 707 Wholesale 124 307 44 — 31 — — (2) 504 Transmission and 117 45 78 747 — 525 — — 1,512 Interstate pipeline — — — — 1,787 — — (94) 1,693 Other 80 — 1 — (1) — — — 80 Total Regulated 4,006 2,689 2,424 747 1,817 525 — (97) 12,111 Nonregulated — 13 1 26 726 27 693 452 1,938 Total Customer Revenue 4,006 2,702 2,425 773 2,543 552 693 355 14,049 Other revenue 25 24 18 84 41 (5) 80 59 326 Total $ 4,031 $ 2,726 $ 2,443 $ 857 $ 2,584 $ 547 $ 773 $ 414 $ 14,375 For the Three-Month Period Ended September 30, 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 $ 1,344 $ 661 $ 977 $ — $ — $ — $ — $ (1) $ 2,981 Retail gas — 70 14 — — — — — 84 Wholesale 59 56 14 — — — — 1 130 Transmission and 33 15 30 208 — 169 — — 455 Interstate pipeline — — — — 264 — — (29) 235 Other 42 — — — — — — — 42 Total Regulated 1,478 802 1,035 208 264 169 — (29) 3,927 Nonregulated — 4 (1) 6 — 6 270 145 430 Total Customer Revenue 1,478 806 1,034 214 264 175 270 116 4,357 Other revenue 1 6 8 32 — — 39 8 94 Total $ 1,479 $ 812 $ 1,042 $ 246 $ 264 $ 175 $ 309 $ 124 $ 4,451 For the Nine-Month Period Ended September 30, 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 $ 3,532 $ 1,539 $ 2,144 $ — $ — $ — $ — $ (1) $ 7,214 Retail gas — 341 81 — — — — — 422 Wholesale 76 157 34 — — — — (1) 266 Transmission and 79 48 75 632 — 502 — — 1,336 Interstate pipeline — — — — 885 — — (103) 782 Other 88 — 1 — — — — — 89 Total Regulated 3,775 2,085 2,335 632 885 502 — (105) 10,109 Nonregulated — 13 1 18 — 14 641 394 1,081 Total Customer Revenue 3,775 2,098 2,336 650 885 516 641 289 11,190 Other revenue 54 16 23 83 5 — 90 43 314 Total $ 3,829 $ 2,114 $ 2,359 $ 733 $ 890 $ 516 $ 731 $ 332 $ 11,504 (1) The BHE and Other reportable segment represents amounts related principally to other entities, including MidAmerican Energy Services, LLC, 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Brokerage $ 1,563 $ 1,449 $ 4,154 $ 3,183 Franchise 23 23 65 54 Total Customer Revenue 1,586 1,472 4,219 3,237 Mortgage and other revenue 157 270 519 591 Total $ 1,743 $ 1,742 $ 4,738 $ 3,828 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue by country: United States $ 6,499 $ 5,773 $ 17,700 $ 14,086 United Kingdom 277 246 857 733 Canada 180 174 537 512 Philippines and other 12 — 19 1 Total operating revenue by country $ 6,968 $ 6,193 $ 19,113 $ 15,332 Income before income tax (benefit) expense and equity loss by country: United States $ 1,511 $ 2,839 $ 3,699 $ 4,220 United Kingdom 107 82 343 250 Canada 49 44 134 130 Philippines and other 8 2 13 19 Total income before income tax (benefit) expense and equity loss by country $ 1,675 $ 2,967 $ 4,189 $ 4,619
Summary of 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 September 30, 2021, by reportable segment (in millions): Performance obligations expected to be satisfied: Less than 12 months More than 12 months Total BHE Pipeline Group $ 2,586 $ 21,377 $ 23,963 BHE Transmission 175 — 175 Total $ 2,761 $ 21,377 $ 24,138
PAC
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes PacifiCorp's revenue from contracts with customers ("Customer Revenue") by line of business, with further disaggregation of retail by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Retail: Residential $ 530 $ 519 $ 1,442 $ 1,363 Commercial 428 418 1,180 1,122 Industrial 296 293 849 838 Other retail 98 114 214 209 Total retail 1,352 1,344 3,685 3,532 Wholesale 58 59 124 76 Transmission 55 33 117 79 Other Customer Revenue 26 42 80 88 Total Customer Revenue 1,491 1,478 4,006 3,775 Other revenue — 1 25 54 Total operating revenue $ 1,491 $ 1,479 $ 4,031 $ 3,829
MEC
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, with further disaggregation of retail by customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 11 (in millions): For the Three-Month Period Ended September 30, 2021 For the Nine-Month Period Ended September 30, 2021 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 255 $ 52 $ — $ 307 $ 586 $ 419 $ — $ 1,005 Commercial 107 17 — 124 258 164 — 422 Industrial 321 5 — 326 741 20 — 761 Natural gas transportation services — 9 — 9 — 28 — 28 Other retail (1) 53 1 — 54 119 2 — 121 Total retail 736 84 — 820 1,704 633 — 2,337 Wholesale 88 25 — 113 214 93 — 307 Multi-value transmission projects 15 — — 15 45 — — 45 Other Customer Revenue — — 2 2 — — 13 13 Total Customer Revenue 839 109 2 950 1,963 726 13 2,702 Other revenue 15 1 — 16 22 2 — 24 Total operating revenue $ 854 $ 110 $ 2 $ 966 $ 1,985 $ 728 $ 13 $ 2,726 For the Three-Month Period Ended September 30, 2020 For the Nine-Month Period Ended September 30, 2020 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 241 $ 46 $ — $ 287 $ 555 $ 233 $ — $ 788 Commercial 99 13 — 112 242 71 — 313 Industrial 280 2 — 282 640 9 — 649 Natural gas transportation services — 8 — 8 — 26 — 26 Other retail (1) 42 1 — 43 103 2 — 105 Total retail 662 70 — 732 1,540 341 — 1,881 Wholesale 46 10 — 56 116 41 — 157 Multi-value transmission projects 14 — — 14 47 — — 47 Other Customer Revenue — — 4 4 — — 5 5 Total Customer Revenue 722 80 4 806 1,703 382 5 2,090 Other revenue 6 — — 6 14 2 — 16 Total operating revenue $ 728 $ 80 $ 4 $ 812 $ 1,717 $ 384 $ 5 $ 2,106 (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.
NPC
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes Nevada Power's revenue from contracts with customers ("Customer Revenue") by line of business, with further disaggregation of retail by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Retail: Residential $ 477 $ 495 $ 998 $ 993 Commercial 129 127 323 317 Industrial 152 147 310 300 Other 4 3 10 8 Total fully bundled 762 772 1,641 1,618 Distribution only service 6 8 17 20 Total retail 768 780 1,658 1,638 Wholesale, transmission and other 28 21 57 48 Total Customer Revenue 796 801 1,715 1,686 Other revenue 6 7 16 20 Total revenue $ 802 $ 808 $ 1,731 $ 1,706
SPPC
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by line of business, with further disaggregation of retail by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 10 (in millions): Three-Month Periods Ended September 30, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 91 $ 11 $ 102 $ 76 $ 11 $ 87 Commercial 84 3 87 71 3 74 Industrial 71 2 73 57 1 58 Other 1 — 1 1 — 1 Total fully bundled 247 16 263 205 15 220 Distribution only service 1 — 1 1 — 1 Total retail 248 16 264 206 15 221 Wholesale, transmission and other 18 — 18 13 — 13 Total Customer Revenue 266 16 282 219 15 234 Other revenue — — — 1 — 1 Total revenue $ 266 $ 16 $ 282 $ 220 $ 15 $ 235 Nine-Month Periods Ended September 30, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 229 $ 50 $ 279 $ 208 $ 54 $ 262 Commercial 202 18 220 183 20 203 Industrial 151 6 157 132 8 140 Other 4 — 4 3 — 3 Total fully bundled 586 74 660 526 82 608 Distribution only service 2 — 2 3 — 3 Total retail 588 74 662 529 82 611 Wholesale, transmission and other 46 — 46 37 — 37 Total Customer Revenue 634 74 708 566 82 648 Other revenue 2 1 3 3 1 4 Total revenue $ 636 $ 75 $ 711 $ 569 $ 83 $ 652
EEGH
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue	The following table summarizes Eastern Energy Gas' revenue from contracts with customers ("Customer Revenue") by regulated and nonregulated, with further disaggregation of regulated by line of business (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Regulated: Gas transportation and storage $ 249 $ 311 $ 774 $ 957 Wholesale 14 25 31 27 Other 1 1 (1) 4 Total regulated 264 337 804 988 Nonregulated 193 193 573 606 Total Customer Revenue 457 530 1,377 1,594 Other revenue (1) 1 2 3 Total operating revenue $ 456 $ 531 $ 1,379 $ 1,597
Summary of 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 September 30, 2021 (in millions): Performance obligations expected to be satisfied Less than 12 months More than 12 months Total Eastern Energy Gas $ 1,574 $ 16,413 $ 17,987

Components of Other Comprehen_2

Components of Other Comprehensive Income (Loss), Net (Tables)	9 Months Ended
	Sep. 30, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Schedule of Other Comprehensive Income (Loss), Net	The following table shows the change in accumulated other comprehensive income (loss) 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 Noncontrolling To BHE Benefits Adjustment Flow Hedges Interests Shareholders, Net Balance, December 31, 2019 $ (417) $ (1,296) $ 7 $ — $ (1,706) Other comprehensive income (loss) 38 (195) (20) — (177) Balance, September 30, 2020 $ (379) $ (1,491) $ (13) $ — $ (1,883) Balance, December 31, 2020 $ (492) $ (1,062) $ (8) $ 10 $ (1,552) Other comprehensive income (loss) 44 (59) 48 (4) 29 Balance, September 30, 2021 $ (448) $ (1,121) $ 40 $ 6 $ (1,523)
EEGH
Accumulated Other Comprehensive Income (Loss) [Line Items]
Schedule of Other Comprehensive Income (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 (loss) income (1) 24 — 23 Balance, September 30, 2020 $ (107) $ (57) $ — $ (164) Balance, December 31, 2020 $ (12) $ (51) $ 10 $ (53) Other comprehensive income (loss) 4 11 (4) 11 Balance, September 30, 2021 $ (8) $ (40) $ 6 $ (42)

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: PacifiCorp $ 1,491 $ 1,479 $ 4,031 $ 3,829 MidAmerican Funding 966 812 2,726 2,114 NV Energy 1,085 1,042 2,443 2,359 Northern Powergrid 277 246 857 733 BHE Pipeline Group 785 264 2,584 890 BHE Transmission 185 175 547 516 BHE Renewables 316 309 773 731 HomeServices 1,743 1,742 4,738 3,828 BHE and Other (1) 120 124 414 332 Total operating revenue $ 6,968 $ 6,193 $ 19,113 $ 15,332 Depreciation and amortization: PacifiCorp $ 272 $ 234 $ 811 $ 696 MidAmerican Funding 218 179 634 530 NV Energy 138 128 411 377 Northern Powergrid 73 69 217 195 BHE Pipeline Group 124 45 363 134 BHE Transmission 59 61 177 176 BHE Renewables 61 72 182 214 HomeServices 14 11 37 34 BHE and Other (1) 1 1 2 1 Total depreciation and amortization $ 960 $ 800 $ 2,834 $ 2,357 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating income: PacifiCorp $ 394 $ 361 $ 911 $ 851 MidAmerican Funding 287 232 438 444 NV Energy 348 347 563 587 Northern Powergrid 126 106 403 327 BHE Pipeline Group 303 101 1,166 442 BHE Transmission 90 79 256 236 BHE Renewables 149 143 279 244 HomeServices 135 239 426 336 BHE and Other (1) 2 (61) (67) (65) Total operating income 1,834 1,547 4,375 3,402 Interest expense (531) (504) (1,593) (1,490) Capitalized interest 18 24 46 60 Allowance for equity funds 34 50 90 122 Interest and dividend income 18 17 65 57 Gains on marketable securities, net 294 1,797 1,142 2,407 Other, net 8 36 64 61 Total income before income tax (benefit) expense and equity loss $ 1,675 $ 2,967 $ 4,189 $ 4,619 Interest expense: PacifiCorp $ 110 $ 107 $ 322 $ 319 MidAmerican Funding 81 79 237 238 NV Energy 51 56 154 171 Northern Powergrid 33 34 98 97 BHE Pipeline Group 33 15 111 44 BHE Transmission 39 38 117 111 BHE Renewables 39 41 119 125 HomeServices 1 1 3 9 BHE and Other (1) 144 133 432 376 Total interest expense $ 531 $ 504 $ 1,593 $ 1,490 Earnings on common shares: PacifiCorp $ 333 $ 286 $ 728 $ 629 MidAmerican Funding 373 337 728 695 NV Energy 282 249 416 367 Northern Powergrid 83 26 162 172 BHE Pipeline Group 144 78 627 321 BHE Transmission 65 58 184 173 BHE Renewables 163 162 360 395 HomeServices 102 177 321 246 BHE and Other (1) 351 1,469 580 1,630 Total earnings on common shares $ 1,896 $ 2,842 $ 4,106 $ 4,628 As of September 30, December 31, 2021 2020 Assets: PacifiCorp $ 28,230 $ 26,862 MidAmerican Funding 25,038 23,530 NV Energy 15,105 14,501 Northern Powergrid 9,043 8,782 BHE Pipeline Group 19,993 19,541 BHE Transmission 9,383 9,208 BHE Renewables 11,766 12,004 HomeServices 5,065 4,955 BHE and Other (1) 7,931 7,933 Total assets $ 131,554 $ 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.
Disaggregation of Revenue	The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated and nonregulated, with further disaggregation of regulated 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 September 30, 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 $ 1,352 $ 736 $ 1,008 $ — $ — $ — $ — $ — $ 3,096 Retail gas — 84 16 — — — — — 100 Wholesale 58 113 19 — 14 — — (1) 203 Transmission and 55 15 35 241 — 175 — — 521 Interstate pipeline — — — — 514 — — (28) 486 Other 26 — — — (2) — — — 24 Total Regulated 1,491 948 1,078 241 526 175 — (29) 4,430 Nonregulated — 2 — 8 257 12 288 141 708 Total Customer Revenue 1,491 950 1,078 249 783 187 288 112 5,138 Other revenue — 16 7 28 2 (2) 28 8 87 Total $ 1,491 $ 966 $ 1,085 $ 277 $ 785 $ 185 $ 316 $ 120 $ 5,225 For the Nine-Month Period Ended September 30, 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 $ 3,685 $ 1,704 $ 2,227 $ — $ — $ — $ — $ (1) $ 7,615 Retail gas — 633 74 — — — — — 707 Wholesale 124 307 44 — 31 — — (2) 504 Transmission and 117 45 78 747 — 525 — — 1,512 Interstate pipeline — — — — 1,787 — — (94) 1,693 Other 80 — 1 — (1) — — — 80 Total Regulated 4,006 2,689 2,424 747 1,817 525 — (97) 12,111 Nonregulated — 13 1 26 726 27 693 452 1,938 Total Customer Revenue 4,006 2,702 2,425 773 2,543 552 693 355 14,049 Other revenue 25 24 18 84 41 (5) 80 59 326 Total $ 4,031 $ 2,726 $ 2,443 $ 857 $ 2,584 $ 547 $ 773 $ 414 $ 14,375 For the Three-Month Period Ended September 30, 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 $ 1,344 $ 661 $ 977 $ — $ — $ — $ — $ (1) $ 2,981 Retail gas — 70 14 — — — — — 84 Wholesale 59 56 14 — — — — 1 130 Transmission and 33 15 30 208 — 169 — — 455 Interstate pipeline — — — — 264 — — (29) 235 Other 42 — — — — — — — 42 Total Regulated 1,478 802 1,035 208 264 169 — (29) 3,927 Nonregulated — 4 (1) 6 — 6 270 145 430 Total Customer Revenue 1,478 806 1,034 214 264 175 270 116 4,357 Other revenue 1 6 8 32 — — 39 8 94 Total $ 1,479 $ 812 $ 1,042 $ 246 $ 264 $ 175 $ 309 $ 124 $ 4,451 For the Nine-Month Period Ended September 30, 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 $ 3,532 $ 1,539 $ 2,144 $ — $ — $ — $ — $ (1) $ 7,214 Retail gas — 341 81 — — — — — 422 Wholesale 76 157 34 — — — — (1) 266 Transmission and 79 48 75 632 — 502 — — 1,336 Interstate pipeline — — — — 885 — — (103) 782 Other 88 — 1 — — — — — 89 Total Regulated 3,775 2,085 2,335 632 885 502 — (105) 10,109 Nonregulated — 13 1 18 — 14 641 394 1,081 Total Customer Revenue 3,775 2,098 2,336 650 885 516 641 289 11,190 Other revenue 54 16 23 83 5 — 90 43 314 Total $ 3,829 $ 2,114 $ 2,359 $ 733 $ 890 $ 516 $ 731 $ 332 $ 11,504 (1) The BHE and Other reportable segment represents amounts related principally to other entities, including MidAmerican Energy Services, LLC, 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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Customer Revenue: Brokerage $ 1,563 $ 1,449 $ 4,154 $ 3,183 Franchise 23 23 65 54 Total Customer Revenue 1,586 1,472 4,219 3,237 Mortgage and other revenue 157 270 519 591 Total $ 1,743 $ 1,742 $ 4,738 $ 3,828 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue by country: United States $ 6,499 $ 5,773 $ 17,700 $ 14,086 United Kingdom 277 246 857 733 Canada 180 174 537 512 Philippines and other 12 — 19 1 Total operating revenue by country $ 6,968 $ 6,193 $ 19,113 $ 15,332 Income before income tax (benefit) expense and equity loss by country: United States $ 1,511 $ 2,839 $ 3,699 $ 4,220 United Kingdom 107 82 343 250 Canada 49 44 134 130 Philippines and other 8 2 13 19 Total income before income tax (benefit) expense and equity loss by country $ 1,675 $ 2,967 $ 4,189 $ 4,619
Schedule of Goodwill	The following table shows the change in the carrying amount of goodwill by reportable segment for the nine-month period ended September 30, 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 — — — — 11 — — 59 70 Foreign currency translation — — — (10) — 6 — — (4) September 30, 2021 $ 1,129 $ 2,102 $ 2,369 $ 990 $ 1,814 $ 1,557 $ 95 $ 1,516 $ 11,572
MEC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: Regulated electric $ 854 $ 728 $ 1,985 $ 1,717 Regulated natural gas 110 80 728 384 Other 2 4 13 5 Total operating revenue $ 966 $ 812 $ 2,726 $ 2,106 Operating income: Regulated electric $ 289 $ 238 $ 401 $ 398 Regulated natural gas (2) (6) 37 40 Total operating income 287 232 438 438 Interest expense (76) (74) (224) (224) Allowance for borrowed funds 4 5 8 12 Allowance for equity funds 11 16 25 33 Other, net 8 14 34 30 Income before income tax benefit $ 234 $ 193 $ 281 $ 289 As of September 30, December 31, Assets: Regulated electric $ 21,063 $ 19,892 Regulated natural gas 1,874 1,544 Other 7 1 Total assets $ 22,944 $ 21,437
Disaggregation of Revenue	The following table summarizes MidAmerican Energy's revenue from contracts with customers ("Customer Revenue") by line of business, with further disaggregation of retail by customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 11 (in millions): For the Three-Month Period Ended September 30, 2021 For the Nine-Month Period Ended September 30, 2021 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 255 $ 52 $ — $ 307 $ 586 $ 419 $ — $ 1,005 Commercial 107 17 — 124 258 164 — 422 Industrial 321 5 — 326 741 20 — 761 Natural gas transportation services — 9 — 9 — 28 — 28 Other retail (1) 53 1 — 54 119 2 — 121 Total retail 736 84 — 820 1,704 633 — 2,337 Wholesale 88 25 — 113 214 93 — 307 Multi-value transmission projects 15 — — 15 45 — — 45 Other Customer Revenue — — 2 2 — — 13 13 Total Customer Revenue 839 109 2 950 1,963 726 13 2,702 Other revenue 15 1 — 16 22 2 — 24 Total operating revenue $ 854 $ 110 $ 2 $ 966 $ 1,985 $ 728 $ 13 $ 2,726 For the Three-Month Period Ended September 30, 2020 For the Nine-Month Period Ended September 30, 2020 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 241 $ 46 $ — $ 287 $ 555 $ 233 $ — $ 788 Commercial 99 13 — 112 242 71 — 313 Industrial 280 2 — 282 640 9 — 649 Natural gas transportation services — 8 — 8 — 26 — 26 Other retail (1) 42 1 — 43 103 2 — 105 Total retail 662 70 — 732 1,540 341 — 1,881 Wholesale 46 10 — 56 116 41 — 157 Multi-value transmission projects 14 — — 14 47 — — 47 Other Customer Revenue — — 4 4 — — 5 5 Total Customer Revenue 722 80 4 806 1,703 382 5 2,090 Other revenue 6 — — 6 14 2 — 16 Total operating revenue $ 728 $ 80 $ 4 $ 812 $ 1,717 $ 384 $ 5 $ 2,106 (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
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: Regulated electric $ 854 $ 728 $ 1,985 $ 1,717 Regulated natural gas 110 80 728 384 Other 2 4 13 13 Total operating revenue $ 966 $ 812 $ 2,726 $ 2,114 Operating income: Regulated electric $ 289 $ 238 $ 401 $ 398 Regulated natural gas (2) (6) 37 40 Other — — — 6 Total operating income 287 232 438 444 Interest expense (81) (79) (237) (238) Allowance for borrowed funds 4 5 8 12 Allowance for equity funds 11 16 25 33 Other, net 8 15 34 30 Income before income tax benefit $ 229 $ 189 $ 268 $ 281 As of September 30, December 31, Assets (1) : Regulated electric $ 22,254 $ 21,083 Regulated natural gas 1,953 1,623 Other 11 5 Total assets $ 24,218 $ 22,711 (1) Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
SPPC
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 Nine-Month Periods Ended September 30, Ended September 30, 2021 2020 2021 2020 Operating revenue: Regulated electric $ 266 $ 220 $ 636 $ 569 Regulated natural gas 16 15 75 83 Total operating revenue $ 282 $ 235 $ 711 $ 652 Operating income: Regulated electric $ 74 $ 66 $ 126 $ 119 Regulated natural gas 1 2 13 12 Total operating income 75 68 139 131 Interest expense (14) (14) (41) (42) Allowance for borrowed funds 1 — 2 1 Allowance for equity funds 2 1 5 3 Interest and dividend income 3 1 6 3 Other, net 3 2 9 4 Income before income tax expense $ 70 $ 58 $ 120 $ 100 As of September 30, December 31, 2021 2020 Assets: Regulated electric $ 3,744 $ 3,540 Regulated natural gas 354 342 Other (1) 32 37 Total assets $ 4,130 $ 3,919 (1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.
Disaggregation of Revenue	The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by line of business, with further disaggregation of retail by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 10 (in millions): Three-Month Periods Ended September 30, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 91 $ 11 $ 102 $ 76 $ 11 $ 87 Commercial 84 3 87 71 3 74 Industrial 71 2 73 57 1 58 Other 1 — 1 1 — 1 Total fully bundled 247 16 263 205 15 220 Distribution only service 1 — 1 1 — 1 Total retail 248 16 264 206 15 221 Wholesale, transmission and other 18 — 18 13 — 13 Total Customer Revenue 266 16 282 219 15 234 Other revenue — — — 1 — 1 Total revenue $ 266 $ 16 $ 282 $ 220 $ 15 $ 235 Nine-Month Periods Ended September 30, 2021 2020 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 229 $ 50 $ 279 $ 208 $ 54 $ 262 Commercial 202 18 220 183 20 203 Industrial 151 6 157 132 8 140 Other 4 — 4 3 — 3 Total fully bundled 586 74 660 526 82 608 Distribution only service 2 — 2 3 — 3 Total retail 588 74 662 529 82 611 Wholesale, transmission and other 46 — 46 37 — 37 Total Customer Revenue 634 74 708 566 82 648 Other revenue 2 1 3 3 1 4 Total revenue $ 636 $ 75 $ 711 $ 569 $ 83 $ 652

Related Party Transactions (Tab

Related Party Transactions (Tables)	9 Months Ended
	Sep. 30, 2021
EEGH
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- and nine-month periods ended September 30, 2020 (in millions): Three-Month Period Nine-Month Period Ended September 30, 2020 Ended September 30, 2020 Sales of natural gas and transportation and storage services $ 60 $ 188 Purchases of natural gas and transportation and storage services 3 9 Services provided by related parties (1) 34 114 Services provided to related parties (2) 17 78 (1) Includes capitalized expenditures of $5 million and $12 million for the three- and nine-month periods ended September 30, 2020, respectively. (2) Amounts primarily attributable to Atlantic Coast Pipeline, LLC, a related-party VIE prior to the GT&S Transaction. Presented below are Eastern Energy Gas' significant transactions with affiliated and related parties for the three- and nine-month periods ended September 30, 2021 (in millions): Three-Month Period Nine-Month Period Ended September 30, 2021 Ended September 30, 2021 Sales of natural gas and transportation and storage services $ 7 $ 21 Purchases of natural gas and transportation and storage services 1 4 Services provided by related parties 16 31 Services provided to related parties 8 24

General - BHE (Details)

General - BHE (Details)	9 Months Ended
	Sep. 30, 2021statecompanyoperatingSegment
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments | operatingSegment	8
Number of owned and operated utility companies in the United States	4
Number of states owned and operated utility companies serve customers | state	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) - EEGH - mi	1 Months Ended		9 Months Ended
	Nov. 30, 2020	Jul. 31, 2020	Sep. 30, 2021
Cove Point LNG, LP
Variable Interest Entity [Line Items]
Percentage interest distributed		25.00%
Cove Point LNG, LP | Not Discontinued Operations | GT&S Transaction
Variable Interest Entity [Line Items]
Percentage interest distributed	50.00%
Iroquois Gas Transmission System, L.P.
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			50.00%
Primary Beneficiary | General Partner | Cove Point LNG, LP
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			100.00%
Primary Beneficiary | Limited Partner | Cove Point LNG, LP
Variable Interest Entity [Line Items]
Variable interest entity, ownership percentage			25.00%
Primary Beneficiary | Federal Energy Regulatory Commission | Iroquois Gas Transmission System, L.P.
Variable Interest Entity [Line Items]
Miles of interstate natural gas transportation pipeline			416

Business Acquisition - Narrativ

Business Acquisition - Narrative (Details) $ in Millions	Jul. 14, 2021USD ($)	Nov. 02, 2020USD ($)	Nov. 01, 2020USD ($)miBcf	Oct. 05, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)	Jul. 03, 2020USD ($)
Business Acquisition [Line Items]
Operating revenue					$ 6,968	$ 6,193	$ 19,113	$ 15,332
Net income (loss)					1,922	$ 2,842	4,207	$ 4,628
Goodwill					11,572		11,572		$ 11,506
Natural Gas Transmission and Storage
Business Acquisition [Line Items]
Payments to acquire businesses			$ 2,500
Long-term debt, less current portion			4,415							$ 5,600
Operating revenue					516		1,563
Net income (loss)					$ 74		$ 247
Accounting revision period							12 months
Goodwill			$ 1,741
Natural Gas Transmission and Storage | Goodwill
Business Acquisition [Line Items]
Useful life, intangible asset			15 years
Natural Gas Transmission and Storage | Domestic Tax Authority and State and Local Jurisdiction
Business Acquisition [Line Items]
Goodwill			$ 900
Natural Gas Transmission and Storage | Primary Beneficiary | Cove Point LNG, LP | Other Ownership Interest
Business Acquisition [Line Items]
Variable interest entity, ownership percentage			25.00%
Natural Gas Transmission and Storage | Primary Beneficiary | Cove Point LNG, LP | General Partner
Business Acquisition [Line Items]
Variable interest entity, ownership percentage			100.00%
Natural Gas Transmission and Storage | Primary Beneficiary | Cove Point LNG, LP | Limited Partner
Business Acquisition [Line Items]
Variable interest entity, ownership percentage			25.00%
Natural Gas Transmission and Storage | Iroquois Gas Transmission System, L.P.
Business Acquisition [Line Items]
Equity method investment, ownership percentage			50.00%
Natural Gas Transmission and Storage | Eastern Gas Transmission, Inc.
Business Acquisition [Line Items]
Ownership percentage acquired			100.00%
Natural Gas Transmission and Storage | Carolina Gas Transmission, LLC
Business Acquisition [Line Items]
Ownership percentage acquired			100.00%
Natural Gas Transmission and Storage Transaction
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
Questar Pipeline Group and Dominion Questar Transaction
Business Acquisition [Line Items]
Payments to acquire businesses	$ 1,300	$ 1,300		$ 1,300
Long-term debt, less current portion				$ 430

Business Acquisition - Schedule

Business Acquisition - Schedule of Recognized Identified Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Nov. 01, 2020	Jul. 03, 2020
Business Acquisition [Line Items]
Goodwill	$ 11,572	$ 11,506
Natural Gas Transmission and Storage
Business Acquisition [Line Items]
Current assets, including cash and cash equivalents of $104			$ 582
Property, plant and equipment			9,264
Goodwill			1,741
Regulatory assets			108
Deferred income taxes			284
Other long-term assets			1,424
Total assets			13,403
Current liabilities, including current portion of long-term debt of $1,200			1,616
Long-term debt, less current portion			4,415	$ 5,600
Regulatory liabilities			650
Other long-term liabilities			292
Total liabilities			6,973
Noncontrolling interest			3,916
Net assets acquired			2,514
Cash and cash equivalents			104
Current portion of long-term debt			$ 1,200

Business Acquisition - Summary

Business Acquisition - Summary of Pro Forma Information (Details) - Natural Gas Transmission and Storage $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Business Acquisition [Line Items]
Operating revenue	$ 16,791
Net income attributable to BHE shareholders	$ 4,468

Cash and Cash Equivalents and_3

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - PAC (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Investments and restricted cash and cash equivalents and investments	17	15
Total cash and cash equivalents and restricted cash and cash equivalents	2,942	1,445	$ 2,096	$ 1,268
PAC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	893	13
Restricted cash and cash equivalents	4	4
Investments and restricted cash and cash equivalents and investments	2	2
Total cash and cash equivalents and restricted cash and cash equivalents	$ 899	$ 19	$ 597	$ 36

Cash and Cash Equivalents and_4

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - MEC (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Total cash and cash equivalents and restricted cash and cash equivalents	2,942	1,445	$ 2,096	$ 1,268
MEC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	541	38
Restricted cash and cash equivalents	7	7
Total cash and cash equivalents and restricted cash and cash equivalents	$ 548	$ 45	$ 199	$ 330

Cash and Cash Equivalents and_5

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - LLC (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Total cash and cash equivalents and restricted cash and cash equivalents	2,942	1,445	$ 2,096	$ 1,268
MidAmerican Funding, LLC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	542	39
Restricted cash and cash equivalents	7	7
Total cash and cash equivalents and restricted cash and cash equivalents	$ 549	$ 46	$ 204	$ 331

Cash and Cash Equivalents and_6

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - NPC (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Total cash and cash equivalents and restricted cash and cash equivalents	2,942	1,445	$ 2,096	$ 1,268
NPC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	85	25
Restricted cash and cash equivalents	9	11
Total cash and cash equivalents and restricted cash and cash equivalents	$ 94	$ 36	$ 160	$ 25

Cash and Cash Equivalents and_7

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents - SPPC (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Total cash and cash equivalents and restricted cash and cash equivalents	2,942	1,445	$ 2,096	$ 1,268
SPPC
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	14	19
Restricted cash and cash equivalents	6	7
Total cash and cash equivalents and restricted cash and cash equivalents	$ 20	$ 26	$ 26	$ 32

Property, Plant and Equipment_3

Property, Plant and Equipment, Net - BHE (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Property, plant and equipment, net	$ 88,062	$ 86,128
Regulated
Property, Plant and Equipment [Line Items]
Property, plant and equipment	106,070	103,397
Accumulated depreciation and amortization	(32,444)	(30,662)
Net operating assets	73,626	72,735
Construction work-in-progress	3,900	3,200
Regulated | Utility generation, transmission and distribution systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 89,026	86,730
Regulated | Utility generation, transmission and distribution systems | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Regulated | Utility generation, transmission and distribution systems | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	80 years
Regulated | Interstate natural gas pipeline assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 17,044	16,667
Regulated | Interstate natural gas pipeline assets | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	3 years
Regulated | Interstate natural gas pipeline assets | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	80 years
Nonregulated
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 13,009	12,671
Accumulated depreciation and amortization	(2,916)	(2,586)
Net operating assets	10,093	10,085
Nonregulated | Independent power plants
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 7,058	7,012
Nonregulated | Independent power plants | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Nonregulated | Independent power plants | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	30 years
Nonregulated | Other assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 5,951	5,659
Nonregulated | Other assets | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	3 years
Nonregulated | Other assets | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	40 years
Common Facilities
Property, Plant and Equipment [Line Items]
Net operating assets	$ 83,719	82,820
Property, plant and equipment, net	88,062	86,128
Construction in Progress
Property, Plant and Equipment [Line Items]
Construction work-in-progress	$ 4,343	$ 3,308

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - PAC (Details) - PAC - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Utility plant in service	$ 31,975	$ 31,975	$ 30,717
Accumulated depreciation and amortization	(10,370)	(10,370)	(9,838)
Utility plant in service, net	21,605	21,605	20,879
Plant, net	21,614	21,614	20,888
Construction work-in-progress	1,134	1,134	1,542
Property, plant and equipment, net	22,748	22,748	22,430
Revised depreciation rates, 2021 depreciation increase
Property, Plant and Equipment [Line Items]
Depreciation	38	$ 120
Minimum
Property, Plant and Equipment [Line Items]
Useful life, generation		15 years
Useful life, transmission		60 years
Useful life, distribution		20 years
Useful life, intangible asset		5 years
Useful life, other		5 years
Maximum
Property, Plant and Equipment [Line Items]
Useful life, generation		59 years
Useful life, transmission		90 years
Useful life, distribution		75 years
Useful life, intangible asset		75 years
Useful life, other		60 years
Generation
Property, Plant and Equipment [Line Items]
Utility plant in service	13,635	$ 13,635	12,861
Transmission
Property, Plant and Equipment [Line Items]
Utility plant in service	7,833	7,833	7,632
Distribution
Property, Plant and Equipment [Line Items]
Utility plant in service	7,889	7,889	7,660
Intangible plant
Property, Plant and Equipment [Line Items]
Utility plant in service	1,083	1,083	1,054
Other assets
Property, Plant and Equipment [Line Items]
Utility plant in service	1,535	$ 1,535	1,510
Computer software | Minimum
Property, Plant and Equipment [Line Items]
Useful life, intangible asset		5 years
Computer software | Maximum
Property, Plant and Equipment [Line Items]
Useful life, intangible asset		10 years
Nonregulated
Property, Plant and Equipment [Line Items]
Plant, net	$ 9	$ 9	$ 9
Nonregulated | Minimum
Property, Plant and Equipment [Line Items]
Useful life, other		14 years
Nonregulated | Maximum
Property, Plant and Equipment [Line Items]
Useful life, other		95 years

Property, Plant and Equipment_5

Property, Plant and Equipment, Net - MEC (Details) - MEC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Plant, net	$ 18,672	$ 18,773
Construction work-in-progress	1,101	506
Property, plant and equipment, net	19,773	19,279
Regulated
Property, Plant and Equipment [Line Items]
Utility plant in service	26,110	25,669
Accumulated depreciation and amortization	(7,444)	(6,902)
Plant, net	18,666	18,767
Nonregulated
Property, Plant and Equipment [Line Items]
Accumulated depreciation and amortization	(1)	(1)
Plant, net	6	6
Nonregulated property gross	$ 7	7
Nonregulated | Minimum
Property, Plant and Equipment [Line Items]
Useful life, other	20 years
Nonregulated | Maximum
Property, Plant and Equipment [Line Items]
Useful life, other	50 years
Electric Operations | Regulated
Property, Plant and Equipment [Line Items]
Generation	$ 17,162	16,980
Transmission	2,415	2,365
Distribution	$ 4,522	4,369
Electric Operations | Regulated | Minimum
Property, Plant and Equipment [Line Items]
Useful life, generation	20 years
Useful life, transmission	52 years
Useful life, distribution	20 years
Electric Operations | Regulated | Maximum
Property, Plant and Equipment [Line Items]
Useful life, generation	70 years
Useful life, transmission	75 years
Useful life, distribution	75 years
Natural Gas Processing Plant | Regulated
Property, Plant and Equipment [Line Items]
Distribution	$ 2,011	$ 1,955
Natural Gas Processing Plant | Regulated | Minimum
Property, Plant and Equipment [Line Items]
Useful life, distribution	29 years
Natural Gas Processing Plant | Regulated | Maximum
Property, Plant and Equipment [Line Items]
Useful life, distribution	75 years

Property, Plant and Equipment_6

Property, Plant and Equipment, Net - NPC (Details) - NPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Plant, net	$ 6,612	$ 6,559
Construction work-in-progress	217	142
Property, plant and equipment, net	6,829	6,701
Regulated
Property, Plant and Equipment [Line Items]
Generation	3,780	3,690
Transmission	1,493	1,468
Distribution	3,878	3,771
General and intangible	810	791
Utility plant in service	9,961	9,720
Accumulated depreciation and amortization	(3,350)	(3,162)
Plant, net	$ 6,611	6,558
Regulated | Minimum
Property, Plant and Equipment [Line Items]
Useful life, generation	30 years
Useful life, transmission	45 years
Useful life, distribution	20 years
Useful life, other	5 years
Regulated | Maximum
Property, Plant and Equipment [Line Items]
Useful life, generation	55 years
Useful life, transmission	70 years
Useful life, distribution	65 years
Useful life, other	65 years
Nonregulated
Property, Plant and Equipment [Line Items]
Plant, net	$ 1	$ 1
Useful life, other	45 years

Property, Plant and Equipment_7

Property, Plant and Equipment, Net - SPPC (Details) - SPPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Plant, net	$ 3,034	$ 3,027
Property, plant and equipment, net	3,265	3,164
Common Facilities
Property, Plant and Equipment [Line Items]
Construction work-in-progress	231	137
Property, plant and equipment, net	3,265	3,164
Regulated | Generation
Property, Plant and Equipment [Line Items]
Generation	1,140	1,130
Transmission	914	908
Distribution	1,806	1,754
General and intangible	$ 199	189
Regulated | Generation | Minimum
Property, Plant and Equipment [Line Items]
Useful life, generation	25 years
Useful life, transmission	50 years
Useful life, distribution	20 years
Useful life, other	5 years
Regulated | Generation | Maximum
Property, Plant and Equipment [Line Items]
Useful life, generation	60 years
Useful life, transmission	100 years
Useful life, distribution	100 years
Useful life, other	70 years
Regulated | Natural Gas Processing Plant
Property, Plant and Equipment [Line Items]
Distribution	$ 433	429
General and intangible	$ 15	15
Regulated | Natural Gas Processing Plant | Minimum
Property, Plant and Equipment [Line Items]
Useful life, distribution	35 years
Useful life, other	5 years
Regulated | Natural Gas Processing Plant | Maximum
Property, Plant and Equipment [Line Items]
Useful life, distribution	70 years
Useful life, other	70 years
Regulated | Common Facilities
Property, Plant and Equipment [Line Items]
Common general	$ 361	355
Utility plant in service	4,868	4,780
Accumulated depreciation and amortization	(1,834)	(1,755)
Plant, net	$ 3,034	3,025
Regulated | Common Facilities | Minimum
Property, Plant and Equipment [Line Items]
Useful life, common general	5 years
Regulated | Common Facilities | Maximum
Property, Plant and Equipment [Line Items]
Useful life, common general	70 years
Nonregulated
Property, Plant and Equipment [Line Items]
Plant, net	$ 0	$ 2
Useful life, other	70 years

Property, Plant and Equipment_8

Property, Plant and Equipment, Net - EEGH (Details) - EEGH - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Plant, net	$ 9,902	$ 9,934
Construction work-in-progress	293	210
Property, plant and equipment, net	10,195	10,144
Regulated
Property, Plant and Equipment [Line Items]
Plant in service, net	8,666	8,497
Accumulated depreciation and amortization	(2,859)	(2,759)
Plant, net	5,807	5,738
Construction work-in-progress	266	196
Nonregulated
Property, Plant and Equipment [Line Items]
Plant in service, net	4,491	4,479
Accumulated depreciation and amortization	(396)	(283)
Plant, net	4,095	4,196
Interstate natural gas pipeline assets | Regulated
Property, Plant and Equipment [Line Items]
Plant in service, net	$ 8,555	8,382
Interstate natural gas pipeline assets | Regulated | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	24 years
Interstate natural gas pipeline assets | Regulated | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	43 years
Intangible plant | Regulated
Property, Plant and Equipment [Line Items]
Plant in service, net	$ 111	115
Intangible plant | Regulated | Minimum
Property, Plant and Equipment [Line Items]
Depreciable life	5 years
Intangible plant | Regulated | Maximum
Property, Plant and Equipment [Line Items]
Depreciable life	10 years
Intangible plant | Nonregulated
Property, Plant and Equipment [Line Items]
Depreciable life	14 years
Plant in service, net	$ 25	25
LNG facility | Nonregulated
Property, Plant and Equipment [Line Items]
Depreciable life	40 years
Plant in service, net	$ 4,466	$ 4,454

Investments and Restricted Ca_3

Investments and Restricted Cash and Cash Equivalents and Investments - BHE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Investments:
Total investments	$ 7,791		$ 7,791		$ 6,600
Equity method investments:
Equity method investments	6,724		6,724		7,067
Restricted cash and cash equivalents:
Restricted cash and investments	960		960		831
Total investments and restricted cash and cash equivalents and investments	15,475		15,475		14,498
Reflected as:
Current assets	257		257		178
Noncurrent assets	15,218		15,218		14,320
Unrealized gains recognized on marketable securities still held at the reporting date	294	$ 1,794	1,141	$ 2,403
Net gains recognized on marketable securities sold during the period	0	3	1	4
Gains on marketable securities, net	294	1,797	1,142	2,407
Equity income (loss)	(5)	$ (41)	(234)	(91)
Production tax credits			1,200	$ 1,000
Quad Cities Station nuclear decommissioning trust funds
Restricted cash and cash equivalents:
Decommissioning fund investments, fair value	727		727		676
Other restricted cash and cash equivalents
Restricted cash and cash equivalents:
Restricted cash and investments	233		233		155
BHE Renewables tax equity investments
Equity method investments:
Equity method investments	5,253		5,253		5,626
Reflected as:
Equity income (loss)			(353)
Production tax credits			401
Other income tax benefits			79
BHE Renewables tax equity investments | Domestic Tax Authority and State and Local Jurisdiction
Reflected as:
Equity income (loss)			123
Iroquois Gas Transmission System, L.P.
Equity method investments:
Equity method investments	583		583		580
Electric Transmission Texas, LLC
Equity method investments:
Equity method investments	578		578		594
JAX LNG, LLC
Equity method investments:
Equity method investments	87		87		75
Bridger Coal Company
Equity method investments:
Equity method investments	60		60		74
Other
Equity method investments:
Equity method investments	163		163		118
Impacted tax equity investments
Equity method investments:
Equity method investments	2,800		2,800
BYD Company Limited common stock
Investments:
BYD Company Limited common stock	7,023		7,023		5,897
Rabbi trusts
Investments:
Rabbi trusts	473		473		440
Other
Investments:
Other	$ 295		$ 295		$ 263

Investments and Restricted Ca_4

Investments and Restricted Cash and Cash Equivalents and Investments - EEGH - Components (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Investments:
Equity method investments	$ 6,724	$ 7,067
Total investments	7,791	6,600
Restricted cash and cash equivalents:
Restricted cash and cash equivalents	960	831
Current assets	257	178
Noncurrent assets	15,218	14,320
Total investments and restricted cash and cash equivalents and investments	15,475	14,498
EEGH
Investments:
Total investments	259	244
Restricted cash and cash equivalents:
Restricted cash and cash equivalents	17	13
Current assets	17	13
Noncurrent assets	259	244
Total investments and restricted cash and cash equivalents and investments	276	257
EEGH | Customer deposits
Restricted cash and cash equivalents:
Restricted cash and cash equivalents	17	13
Iroquois Gas Transmission System, L.P.
Investments:
Equity method investments	583	580
Iroquois Gas Transmission System, L.P. | EEGH
Investments:
Equity method investments	246	244
Investment funds | EEGH
Investments:
Investment funds	$ 13	$ 0

Investments and Restricted Ca_5

Investments and Restricted Cash and Cash Equivalents and Investments - EEGH - Narrative (Details) - EEGH - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Sep. 30, 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	$ 30	$ 63
Iroquois Gas Transmission System, L.P.
Investments And Restricted Cash And Investments [Line Items]
Equity method investment, ownership percentage	50.00%
White River Hub, LLC
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 - BHE and EEGH - Reconciliation (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Dec. 31, 2019
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 2,709	$ 1,290
Restricted cash and cash equivalents	216	140
Total cash and cash equivalents and restricted cash and cash equivalents	2,942	1,445	$ 2,096	$ 1,268
EEGH
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	90	35
Restricted cash and cash equivalents	17	13
Total cash and cash equivalents and restricted cash and cash equivalents	$ 107	$ 48	$ 56	$ 39

Regulatory Matters - MEC (Detai

Regulatory Matters - MEC (Details) $ in Millions	Sep. 30, 2021USD ($)
MEC
Schedule Of Regulatory Assets and Liabilities [Line Items]
Adjustment clause, cost increase	$ 245

Regulatory Matters - EEGH (Deta

Regulatory Matters - EEGH (Details) dekathermPerDay in Millions, $ in Millions	Aug. 01, 2020USD ($)	Sep. 30, 2021USD ($)	Dec. 31, 2020USD ($)	Jan. 31, 2020USD ($)	Dec. 31, 2014dekathermPerDay	Jun. 30, 2021USD ($)	Oct. 31, 2020USD ($)	Sep. 30, 2020USD ($)	Dec. 31, 2018USD ($)
EGTS | Cancellation Of Atlantic Coast Pipeline Project
Schedule Of Regulatory Assets and Liabilities [Line Items]
Asset impairment charges								$ 482
Asset impairment charges, after tax								359
EGTS | Atlantic Coast Pipeline Project, Available For Potential Modified Project
Schedule Of Regulatory Assets and Liabilities [Line Items]
Asset impairment charges								10
Asset impairment charges, after tax								7
Benefit from ARO revision								29
Benefit from ARO revision, after-tax								20
Property, plant and equipment, net		$ 40
EGTS | Atlantic Coast Pipeline Project, Available For Potential Modified Project | Asset Retirement Obligation Costs
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory liabilities								$ 75
EGTS | 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
EGTS | 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
Litigation settlement, reduction in expense						$ 11
Litigation settlement, reduction in expense, after tax						$ 8
Federal Energy Regulatory Commission | EGTS
Schedule Of Regulatory Assets and Liabilities [Line Items]
Project capacity | dekathermPerDay					1.5
General Rate Case | Federal Energy Regulatory Commission | EGTS
Schedule Of Regulatory Assets and Liabilities [Line Items]
Proposed annual cost-of-service		$ 1,100
General Rate Case | Federal Energy Regulatory Commission | EGTS | Gas Storage
Schedule Of Regulatory Assets and Liabilities [Line Items]
Proposed annual cost-of-service, rate increase		85.00%
General Rate Case | Federal Energy Regulatory Commission | EGTS | Gas Transportation
Schedule Of Regulatory Assets and Liabilities [Line Items]
Proposed annual cost-of-service, rate increase		60.00%
General Rate Case | Federal Energy Regulatory Commission | Cove Point LNG, LP
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
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
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
Schedule Of Regulatory Assets and Liabilities [Line Items]
Approved rate increase (decrease) amount							$ 7

Recent Financing Transactions -

Recent Financing Transactions - BHE (Details) $ in Millions, $ in Millions	Nov. 05, 2021USD ($)	Sep. 30, 2021USD ($)	Jul. 31, 2021USD ($)	Jun. 30, 2021USD ($)	May 31, 2021CAD ($)	Apr. 30, 2021USD ($)	Apr. 30, 2021CAD ($)
PAC | Unsecured credit facility, $600 million, expiring June 2022, first facility, extended | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 600
PAC | Unsecured credit facility, $600 million, expiring June 2022, second facility, extended | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				600
PAC | Unsecured Credit Facility, $1.2 Billion, Expiring June 2024, Second Facility, Extended | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				1,200
HomeServices | Unsecured credit facility, $600 million, expiring September 2022 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 600
HomeServices | Unsecured Credit Facility, Amended, Expiring September 2026 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity		700
MEC | Unsecured credit facility, $900 million, expiring June 2022 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				900
MEC | Unsecured Credit Facility, $1.5 Billion, Expiring June 2024 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				1,500
MEC | Unsecured credit facility, $600 million, expiring August 2021 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				600
EGTS
Debt Instrument [Line Items]
Face amount		1,600		1,600
AltaLink Investments, L.P. | Secured Credit Facility C$75 Million Expiring December 2025 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 75
AltaLink Investments, L.P. | Secured Credit Facility C$500 Million Expiring December 2025 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					500
AltaLink Investments, L.P. | Unsecured Credit Facility C$300 Million Expiring December 2025 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity					$ 300
AltaLink Investments, L.P. | Revolving credit facility, C$200 million, expiring April 2022 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity							$ 200
Berkshire Hathaway Energy | Unsecured credit facility, $3.5 billion, expiring June 2022 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				3,500
NPC | Secured Credit Facility, $400 Million, Expiring June 2024 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				400
SPPC | Secured Credit Facility, $250 Million, Expiring June 2024 | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 250
BHE Pipeline Group | Northern Natural Gas | Senior Notes, 3.40%, due 2051
Debt Instrument [Line Items]
Face amount						$ 550
BHE Pipeline Group | Northern Natural Gas | Senior Notes, 4.25%, due 2021
Debt Instrument [Line Items]
Face amount						$ 200
Subsidiary Debt | PAC | First Mortgage Bonds, 2.95%, Due February 2022 | Subsequent Event
Debt Instrument [Line Items]
Face amount	$ 450
Stated interest rate	2.95%
Subsidiary Debt | PAC | First Mortgage Bonds, 2.90%, Due 2052
Debt Instrument [Line Items]
Face amount			$ 1,000
Stated interest rate			2.90%
Subsidiary Debt | MEC | MEC First Mortgage Bonds, 2.70%, Due August 2052
Debt Instrument [Line Items]
Face amount			$ 500
Stated interest rate			2.70%
Subsidiary Debt | HomeServices | HomeServices | Variable-rate Term Loan - Due 2026
Debt Instrument [Line Items]
Face amount		$ 150
Subsidiary Debt | BHE Pipeline Group | Senior Notes, 3.40%, due 2051
Debt Instrument [Line Items]
Stated interest rate						3.40%	3.40%
Subsidiary Debt | BHE Pipeline Group | Senior Notes, 4.25%, due 2021
Debt Instrument [Line Items]
Stated interest rate						4.25%	4.25%

Recent Financing Transactions_2

Recent Financing Transactions - PAC (Details) - PAC - USD ($) $ in Millions	Nov. 05, 2021	Oct. 31, 2021	Jul. 31, 2021	Jun. 30, 2021
Subsequent Event
Debt Instrument [Line Items]
Dividends payable		$ 150
First Mortgage Bonds, 2.95%, Due February 2022 | Subsidiary Debt | Subsequent Event
Debt Instrument [Line Items]
Face amount	$ 450
Stated interest rate	2.95%
First Mortgage Bonds, 2.90%, Due 2052 | Subsidiary Debt
Debt Instrument [Line Items]
Face amount			$ 1,000
Stated interest rate			2.90%
Unsecured credit facility, $600 million, expiring June 2022, first facility, extended | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 600
Unsecured credit facility, $600 million, expiring June 2022, second facility, extended | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				600
Unsecured Credit Facility, $1.2 Billion, Expiring June 2024, Second Facility, Extended | Line of Credit
Debt Instrument [Line Items]
Maximum borrowing capacity				$ 1,200

Recent Financing Transactions_3

Recent Financing Transactions - MEC (Details) - MEC - USD ($) $ in Millions	Jul. 31, 2021	Jun. 30, 2021
MEC First Mortgage Bonds, 2.70%, Due August 2052 | Subsidiary Debt
Debt Instrument [Line Items]
Face amount	$ 500
Stated interest rate	2.70%
Line of Credit | Unsecured credit facility, $900 million, expiring June 2022
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 900
Line of Credit | Unsecured Credit Facility, $1.5 Billion, Expiring June 2024
Debt Instrument [Line Items]
Maximum borrowing capacity		1,500
Line of Credit | Unsecured credit facility, $600 million, expiring August 2021
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 600

Recent Financing Transactions_4

Recent Financing Transactions - NPC (Details) $ in Millions	Jun. 30, 2021USD ($)
Secured Credit Facility, $400 Million, Expiring June 2024 | Line of Credit | NPC
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 400

Recent Financing Transactions_5

Recent Financing Transactions - SPPC (Details) $ in Millions	Jun. 30, 2021USD ($)
Secured Credit Facility, $250 Million, Expiring June 2024 | Line of Credit | SPPC
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 250

Recent Financing Transactions_6

Recent Financing Transactions - EEGH (Details) - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Jun. 29, 2021
EEGH
Debt Instrument [Line Items]
Face amount		$ 650	$ 2,250
EGTS
Debt Instrument [Line Items]
Face amount	$ 1,600	$ 1,600
EEGH 3.6% Senior Notes, due 2024 | EEGH
Debt Instrument [Line Items]
Face amount			450
EEGH 3% Senior Notes, due 2029 | EEGH
Debt Instrument [Line Items]
Face amount			600
EEGH 4.8% Senior Notes, due 2043 | EEGH
Debt Instrument [Line Items]
Face amount			400
EEGH 4.6% Senior Notes, due 2044 | EEGH
Debt Instrument [Line Items]
Face amount			500
EEGH 3.9% Senior Notes, due 2049 | EEGH
Debt Instrument [Line Items]
Face amount			$ 300
3.6% Senior Notes due 2024 | EEGH
Debt Instrument [Line Items]
Stated interest rate		3.60%
Face amount		$ 339
3.6% Senior Notes due 2024 | EGTS
Debt Instrument [Line Items]
Face amount		$ 111
3.0% Senior Notes due 2029 | EEGH
Debt Instrument [Line Items]
Stated interest rate		3.00%
Face amount		$ 174
3.0% Senior Notes due 2029 | EGTS
Debt Instrument [Line Items]
Face amount		$ 426
4.8% Senior Notes due 2043 | EEGH
Debt Instrument [Line Items]
Stated interest rate		4.80%
Face amount		$ 54
4.8% Senior Notes due 2043 | EGTS
Debt Instrument [Line Items]
Face amount		$ 346
4.6% Senior Notes due 2044 | EEGH
Debt Instrument [Line Items]
Stated interest rate		4.60%
Face amount		$ 56
4.6% Senior Notes due 2044 | EGTS
Debt Instrument [Line Items]
Face amount		$ 444
3.9% Senior Notes due 2049 | EEGH
Debt Instrument [Line Items]
Stated interest rate		3.90%
Face amount		$ 27
3.9% Senior Notes due 2049 | EGTS
Debt Instrument [Line Items]
Face amount		$ 273

Income Taxes - BHE (Details)

Income Taxes - BHE (Details) - USD ($) $ in Millions	Apr. 01, 2023	Apr. 01, 2020	Jul. 31, 2021	Jun. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate					21.00%	21.00%	21.00%	21.00%
Income tax credits					(31.00%)	(20.00%)	(29.00%)	(23.00%)
State income tax, net of federal income tax impacts					(4.00%)	3.00%	0.00%	2.00%
Income tax effect of foreign income					(1.00%)	1.00%	2.00%	0.00%
Effects of ratemaking					(6.00%)	(2.00%)	(5.00%)	(2.00%)
Equity income					0.00%	0.00%	(1.00%)	0.00%
Noncontrolling interest					(1.00%)	0.00%	(2.00%)	0.00%
Other					1.00%	0.00%	1.00%	0.00%
Effective income tax rate					(21.00%)	3.00%	(13.00%)	(2.00%)
Years eligible for federal renewable energy production tax credit							10 years
Production tax credits							$ 1,200	$ 1,000
United Kingdom
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Income tax effect, change in enacted tax rate			$ 35	$ 109
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent		17.00%					19.00%
United Kingdom | Subsequent Event | Forecast
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	25.00%
Parent Company
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Related party transaction, cash paid for (received) income taxes							$ (1,300)	$ (1,000)

Income Taxes - PAC (Details)

Income Taxes - PAC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
State income tax, net of federal income tax impacts	(4.00%)	3.00%	0.00%	2.00%
Income tax credits	(31.00%)	(20.00%)	(29.00%)	(23.00%)
Effects of ratemaking	(6.00%)	(2.00%)	(5.00%)	(2.00%)
Other	1.00%	0.00%	1.00%	0.00%
Effective income tax rate	(21.00%)	3.00%	(13.00%)	(2.00%)
Years eligible for federal renewable energy production tax credit			10 years
PAC
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
State income tax, net of federal income tax impacts	4.00%	3.00%	4.00%	3.00%
Income tax credits	(20.00%)	(15.00%)	(20.00%)	(12.00%)
Effects of ratemaking	(13.00%)	(4.00%)	(14.00%)	(8.00%)
Other	(1.00%)	1.00%	0.00%	1.00%
Effective income tax rate	(9.00%)	6.00%	(9.00%)	5.00%
Years eligible for federal renewable energy production tax credit			10 years
Effective income tax reconciliation, amortization of excess deferred income taxes	$ 41	$ 6	$ 89	$ 41
PAC | State
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Effective income tax reconciliation, amortization of excess deferred income taxes			3	30
BHE | PAC
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Related party transaction, cash paid for (received) income taxes			$ (109)	$ 79

Income Taxes - MEC (Details)

Income Taxes - MEC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Income tax credits	(31.00%)	(20.00%)	(29.00%)	(23.00%)
State income tax, net of federal income tax impacts	(4.00%)	3.00%	0.00%	2.00%
Effects of ratemaking	(6.00%)	(2.00%)	(5.00%)	(2.00%)
Other	1.00%	0.00%	1.00%	0.00%
Effective income tax rate	(21.00%)	3.00%	(13.00%)	(2.00%)
Years eligible for federal renewable energy production tax credit			10 years
Production tax credits			$ 1,200	$ 1,000
MEC
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Income tax credits	(44.00%)	(55.00%)	(143.00%)	(122.00%)
State income tax, net of federal income tax impacts	(26.00%)	(27.00%)	(27.00%)	(29.00%)
Effects of ratemaking	(12.00%)	(15.00%)	(13.00%)	(13.00%)
Other	0.00%	0.00%	0.00%	1.00%
Effective income tax rate	(61.00%)	(76.00%)	(162.00%)	(142.00%)
Years eligible for federal renewable energy production tax credit			10 years
Production tax credits	$ 103	$ 105	$ 400	$ 352
MEC | Berkshire Hathaway Energy
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Related party transaction, cash paid for (received) income taxes			$ (677)	$ (500)

Income Taxes - LLC (Details)

Income Taxes - LLC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Income tax credits	(31.00%)	(20.00%)	(29.00%)	(23.00%)
State income tax, net of federal income tax impacts	(4.00%)	3.00%	0.00%	2.00%
Effects of ratemaking	(6.00%)	(2.00%)	(5.00%)	(2.00%)
Other	1.00%	0.00%	1.00%	0.00%
Effective income tax rate	(21.00%)	3.00%	(13.00%)	(2.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
Production tax credits			$ 1,200	$ 1,000
MidAmerican Funding, LLC
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Income tax credits	(45.00%)	(56.00%)	(150.00%)	(126.00%)
State income tax, net of federal income tax impacts	(27.00%)	(27.00%)	(29.00%)	(30.00%)
Effects of ratemaking	(12.00%)	(16.00%)	(14.00%)	(13.00%)
Other	0.00%	0.00%	0.00%	1.00%
Effective income tax rate	(63.00%)	(78.00%)	(172.00%)	(147.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
Production tax credits	$ 103	$ 105	$ 400	$ 352
MidAmerican Funding, LLC | Berkshire Hathaway Energy
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash paid for (received) income taxes			$ (681)	$ (504)

Income Taxes - NPC (Details)

Income Taxes - NPC (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effects of ratemaking	(6.00%)	(2.00%)	(5.00%)	(2.00%)
Effective income tax rate	(21.00%)	3.00%	(13.00%)	(2.00%)
NPC
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effects of ratemaking	(10.00%)	0.00%	(10.00%)	0.00%
Effective income tax rate	11.00%	21.00%	11.00%	21.00%

Income Taxes - SPPC (Details)

Income Taxes - SPPC (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effects of ratemaking	(6.00%)	(2.00%)	(5.00%)	(2.00%)
Other	1.00%	0.00%	1.00%	0.00%
Effective income tax rate	(21.00%)	3.00%	(13.00%)	(2.00%)
SPPC
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effects of ratemaking	(10.00%)	(11.00%)	(10.00%)	(10.00%)
Other	0.00%	0.00%	0.00%	(1.00%)
Effective income tax rate	11.00%	10.00%	11.00%	10.00%

Income Taxes - EEGH (Details)

Income Taxes - EEGH (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
State income tax, net of federal income tax impacts	(4.00%)	3.00%	0.00%	2.00%
Equity interest	0.00%	0.00%	(1.00%)	0.00%
Noncontrolling interest	(1.00%)	0.00%	(2.00%)	0.00%
Other	1.00%	0.00%	1.00%	0.00%
Effective income tax rate	(21.00%)	3.00%	(13.00%)	(2.00%)
EEGH
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
State income tax, net of federal income tax impacts	2.00%	(3.00%)	2.00%	(29.00%)
Equity interest	1.00%	0.00%	1.00%	8.00%
Effects of ratemaking	(1.00%)	(2.00%)	(1.00%)	(6.00%)
Change in tax status	0.00%	(18.00%)	0.00%	(24.00%)
AFUDC-equity	0.00%	0.00%	0.00%	(2.00%)
Noncontrolling interest	(11.00%)	(6.00%)	(11.00%)	(24.00%)
Write-off of regulatory assets	0.00%	0.00%	0.00%	9.00%
Other	0.00%	(2.00%)	1.00%	(1.00%)
Effective income tax rate	12.00%	(10.00%)	13.00%	(48.00%)
EEGH | BHE
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Related party transaction, cash paid for (received) income taxes			$ (34)
EEGH | Cove Point LNG, LP
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Ownership interest			75.00%	25.00%

Employee Benefit Plans - BHE (D

Employee Benefit Plans - BHE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 1	$ 8	$ 5
Interest cost	4	6	14	16
Expected return on plan assets	(5)	(9)	(16)	(25)
Net amortization	0	(1)	(2)	(5)
Net periodic benefit cost (credit)	1	(3)	4	(9)
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	4	22	11
Interest cost	21	23	59	69
Expected return on plan assets	(32)	(35)	(101)	(105)
Settlement	4	0	4	0
Net amortization	6	8	19	25
Net periodic benefit cost (credit)	6	0	3	0
United Kingdom | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4	12	12
Interest cost	8	10	23	30
Expected return on plan assets	(28)	(26)	(84)	(76)
Net amortization	14	11	42	32
Net periodic benefit cost (credit)	$ (2)	$ (1)	$ (7)	$ (2)

Employee Benefit Plans - BHE -

Employee Benefit Plans - BHE - Employer Contributions (Details) - 9 months ended Sep. 30, 2021 £ in Millions, $ in Millions	USD ($)	GBP (£)	GBP (£)
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 13
Employer contributions	10
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	9
United Kingdom | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year | £			£ 20
Employer contributions	$ 24	£ 17

Employee Benefit Plans - PAC (D

Employee Benefit Plans - PAC (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		$ 2	$ 1	$ 8	$ 5
Interest cost		4	6	14	16
Expected return on plan assets		(5)	(9)	(16)	(25)
Net amortization		0	(1)	(2)	(5)
Net periodic benefit cost (credit)		1	(3)	4	(9)
PAC | Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost		0	0	1	1
Interest cost		1	2	5	7
Expected return on plan assets		(2)	(3)	(6)	(10)
Net amortization		1	0	1	0
Net periodic benefit cost (credit)		0	(1)	1	(2)
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost		7	4	22	11
Interest cost		21	23	59	69
Expected return on plan assets		(32)	(35)	(101)	(105)
Settlement		4	0	4	0
Net amortization		6	8	19	25
Net periodic benefit cost (credit)		6	0	3	0
United States | PAC | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost		0	0	0	0
Interest cost		8	9	22	27
Expected return on plan assets		(12)	(14)	(39)	(42)
Settlement	$ 4	4	0	4	0
Net amortization		5	4	15	13
Net periodic benefit cost (credit)		$ 5	$ (1)	$ 2	$ (2)

Employee Benefit Plans - PAC -

Employee Benefit Plans - PAC - Employer Contributions (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year		$ 13		$ 13
Employer contributions				10
PAC | Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year		1		1
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year		13		13
Employer contributions				9
Settlement		4	$ 0	4	$ 0
United States | PAC | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year		4		4
Employer contributions				3
Settlement	$ 4	$ 4	$ 0	$ 4	$ 0
Decrease in underfunded status	$ 84

Employee Benefit Plans - MEC (D

Employee Benefit Plans - MEC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Pension Plan | United States
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 7	$ 4	$ 22	$ 11
Interest cost	21	23	59	69
Expected return on plan assets	(32)	(35)	(101)	(105)
Net amortization	6	8	19	25
Net periodic benefit cost (credit)	6	0	3	0
Pension Plan | United States | MEC
Defined Benefit Plan Disclosure [Line Items]
Service cost	5	2	15	4
Interest cost	6	7	17	19
Expected return on plan assets	(9)	(10)	(28)	(30)
Net amortization	0	0	1	1
Net periodic benefit cost (credit)	2	(1)	5	(6)
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	1	8	5
Interest cost	4	6	14	16
Expected return on plan assets	(5)	(9)	(16)	(25)
Net amortization	0	(1)	(2)	(5)
Net periodic benefit cost (credit)	1	(3)	4	(9)
Other Postretirement Plans | MEC
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	1	6	3
Interest cost	2	2	6	5
Expected return on plan assets	(2)	(4)	(7)	(10)
Net amortization	(1)	(1)	(3)	(4)
Net periodic benefit cost (credit)	$ 1	$ (2)	$ 2	$ (6)

Employee Benefit Plans - MEC -

Employee Benefit Plans - MEC - Employer Contributions (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 13
Employer contributions	10
MEC | Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	12
Employer contributions	9
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	9
United States | MEC | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	7
Employer contributions	$ 5

Employee Benefit Plans - NPC (D

Employee Benefit Plans - NPC (Details) - NPC - United States - NV Energy - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Other Assets | Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	$ 4	$ 4
Other Current Liabilities | Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other current liabilities	(1)	(1)
Other Noncurrent Liabilities | Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other long-term liabilities	(9)	(9)
Qualified Plan | Other Assets | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	$ 11	$ 8

Employee Benefit Plans - SPPC (

Employee Benefit Plans - SPPC (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2021	Dec. 31, 2020
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	$ 10
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	9
SPPC | United States | Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Employer contributions	1
SPPC | United States | NV Energy | Other Current Liabilities | Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other current liabilities	(1)	$ (1)
SPPC | United States | NV Energy | Other Noncurrent Liabilities | Other Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other long-term liabilities	(8)	(8)
SPPC | United States | NV Energy | Other Noncurrent Liabilities | Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Other long-term liabilities	(13)	(13)
SPPC | Qualified Plan | United States | NV Energy | Other Assets | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Other non-current assets	$ 31	$ 26

Employee Benefit Plans - EEGH (

Employee Benefit Plans - EEGH (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Postretirement Plans
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 2	$ 1	$ 8	$ 5
Interest cost	4	6	14	16
Expected return on plan assets	(5)	(9)	(16)	(25)
Net amortization	0	(1)	(2)	(5)
Net periodic benefit cost (credit)	1	(3)	4	(9)
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Service cost	7	4	22	11
Interest cost	21	23	59	69
Expected return on plan assets	(32)	(35)	(101)	(105)
Net amortization	6	8	19	25
Net periodic benefit cost (credit)	6	0	3	0
United States | Pension Plan | EEGH
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	2	0	5
Interest cost	0	3	0	8
Expected return on plan assets	0	(14)	0	(42)
Net amortization	0	1	0	5
Net periodic benefit cost (credit)	0	(8)	0	(24)
United States | Other Postretirement Plans | EEGH
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	1
Interest cost	0	1	0	3
Expected return on plan assets	0	(4)	0	(14)
Net amortization	0	(1)	0	(2)
Net periodic benefit cost (credit)	$ 0	$ (4)	$ 0	$ (12)

Risk Management and Hedging A_3

Risk Management and Hedging Activities - PAC - Balance Sheet Location (Details) - PAC - Commodity derivatives - USD ($) $ in Millions	Sep. 30, 2021	Jun. 30, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Derivatives, Fair Value [Line Items]
Total	$ 149		$ (17)
Cash collateral (payable) receivable	5		24
Total derivatives - net basis	154		7
Other Current Assets
Derivatives, Fair Value [Line Items]
Total	159		27
Cash collateral (payable) receivable	(6)		0
Total derivatives - net basis	153		27
Other Assets
Derivatives, Fair Value [Line Items]
Total	40		6
Cash collateral (payable) receivable	0		0
Total derivatives - net basis	40		6
Other Current Liabilities
Derivatives, Fair Value [Line Items]
Total	(42)		(22)
Cash collateral (payable) receivable	11		15
Total derivatives - net basis	(31)		(7)
Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Total	(8)		(28)
Cash collateral (payable) receivable	0		9
Total derivatives - net basis	(8)		(19)
Not Designated as Hedging
Derivatives, Fair Value [Line Items]
Derivative asset, gross	204		36
Derivative liability	(55)		(53)
Total	149		(17)
Net regulatory asset (liability) on derivative contracts	(149)	$ (102)	17	$ 9	$ 68	$ 62
Not Designated as Hedging | Other Current Assets
Derivatives, Fair Value [Line Items]
Derivative asset, gross	159		29
Derivative liability	0		(2)
Total	159		27
Not Designated as Hedging | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset, gross	40		6
Derivative liability	0		0
Total	40		6
Not Designated as Hedging | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Derivative asset, gross	4		1
Derivative liability	(46)		(23)
Total	(42)		(22)
Not Designated as Hedging | Other Noncurrent Liabilities
Derivatives, Fair Value [Line Items]
Derivative asset, gross	1		0
Derivative liability	(9)		(28)
Total	$ (8)		$ (28)

Risk Management and Hedging A_4

Risk Management and Hedging Activities - PAC - Not Designated as Hedging Contracts (Details) - PAC - Not Designated as Hedging - Commodity derivatives - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Instruments [Roll Forward]
Beginning balance	$ (102)	$ 68	$ 17	$ 62
Changes in fair value	(128)	(49)	(247)	(21)
Net gains (losses) reclassified to operating revenue	0	1	(5)	14
Net gains (losses) reclassified to cost of fuel and energy	81	(11)	86	(46)
Ending balance	$ (149)	$ 9	$ (149)	$ 9

Risk Management and Hedging A_5

Risk Management and Hedging Activities - PAC - Derivative Contract Volumes (Details) - PAC - Commodity derivatives MWh in Millions, Dth in Millions	Sep. 30, 2021MWhDth	Dec. 31, 2020DthMWh
Electricity sales, net
Notional Amounts of Outstanding Derivative Positions [Line Items]
Nonmonetary notional amount | MWh	0	(1)
Natural gas purchases
Notional Amounts of Outstanding Derivative Positions [Line Items]
Nonmonetary notional amount | Dth	101	100

Risk Management and Hedging A_6

Risk Management and Hedging Activities - PAC - Collateral and Contingent Features (Details) - PAC - Commodity derivatives - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Derivative [Line Items]
Derivative, net liability position, aggregate fair value	$ 54	$ 51
Collateral already posted, aggregate fair value	11	24
Additional collateral, aggregate fair value	$ 36	$ 25

Fair Value Measurements - BHE (

Fair Value Measurements - BHE (Details) - Recurring - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, offset	$ (49)	$ (21)
Assets, fair value	12,257	9,918
Derivative liability, offset	80	56
Derivative liability	(130)	(121)
Cash collateral (payable) receivable	31	35
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	9,953	7,562
Derivative liability	(3)	(6)
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	2,235	2,180
Derivative liability	(149)	(152)
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	118	197
Derivative liability	(58)	(19)
Mortgage loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	1,687	2,001
Mortgage loans held for sale | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	0	0
Mortgage loans held for sale | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	1,687	2,001
Mortgage loans held for sale | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for sale	0	0
Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
Money market mutual funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
Money market mutual funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Money market mutual funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	228	200
United States government obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	228	200
United States government obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
United States government obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	2	5
International government obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
International government obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	2	5
International government obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	86	73
Corporate obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Corporate obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	86	73
Corporate obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	3	2
Municipal obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Municipal obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	3	2
Municipal obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1	6
Agency, asset and mortgage-backed obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Agency, asset and mortgage-backed obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1	6
Agency, asset and mortgage-backed obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	398	381
United States companies | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	398	381
United States companies | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
United States companies | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	7,031	5,906
International companies | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	7,031	5,906
International companies | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
International companies | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Investment funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Investment funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Investment funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, offset	(49)	(21)
Derivative asset	490	188
Derivative liability, offset	80	56
Derivative liability	(112)	(54)
Commodity derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	15	1
Derivative liability, gross	(2)	(1)
Commodity derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	436	73
Derivative liability, gross	(134)	(90)
Commodity derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	88	135
Derivative liability, gross	(56)	(19)
Foreign currency exchange rate derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	8	20
Derivative liability	(4)	(2)
Foreign currency exchange rate derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability, gross	0	0
Foreign currency exchange rate derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	8	20
Derivative liability, gross	(4)	(2)
Foreign currency exchange rate derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability, gross	0	0
Interest rate derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	42	62
Derivative liability, offset	0
Derivative liability	(14)	(65)
Interest rate derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability, gross	(1)	(5)
Interest rate derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	12	0
Derivative liability, gross	(11)	(60)
Interest rate derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	30	62
Derivative liability, gross	$ (2)	$ 0

Fair Value Measurements - BHE -

Fair Value Measurements - BHE - Level 3 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Commodity derivatives
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 105	$ 44	$ 116	$ 97
Changes included in earnings	(18)	(7)	(34)	(11)
Changes in fair value recognized in OCI	(6)		(13)
Changes in fair value recognized in net regulatory assets	12	20	21	(36)
Purchases	1	1	2	4
Settlements	(62)	38	(60)	42
Ending balance	32	96	32	96
Interest rate derivatives
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	41	78	62	14
Changes included in earnings	(13)	10	(34)	74
Changes in fair value recognized in OCI	0		0
Changes in fair value recognized in net regulatory assets	0	0	0	0
Purchases	0	0	0	0
Settlements	0	0	0	0
Ending balance	$ 28	$ 88	$ 28	$ 88

Fair Value Measurements - BHE_2

Fair Value Measurements - BHE - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 50,098	$ 49,866
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 57,902	$ 60,633

Fair Value Measurements - PAC (

Fair Value Measurements - PAC (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, offset	$ (49)	$ (21)
Assets, fair value	12,257	9,918
Derivative liability, offset	80	56
Derivative liability	(130)	(121)
Cash collateral receivable (payable)	31	35
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	9,953	7,562
Derivative liability	(3)	(6)
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	2,235	2,180
Derivative liability	(149)	(152)
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	118	197
Derivative liability	(58)	(19)
Commodity derivatives | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, offset	(49)	(21)
Derivative asset	490	188
Derivative liability, offset	80	56
Derivative liability	(112)	(54)
Commodity derivatives | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	15	1
Derivative liability, gross	(2)	(1)
Commodity derivatives | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	436	73
Derivative liability, gross	(134)	(90)
Commodity derivatives | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	88	135
Derivative liability, gross	(56)	(19)
Money market mutual funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
Money market mutual funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
Money market mutual funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Money market mutual funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Investment funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Investment funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Investment funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Investment funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
PAC | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	1,100	64
PAC | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	907	31
PAC | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	204	36
PAC | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
PAC | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash collateral receivable (payable)	5	24
PAC | Commodity derivatives | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, offset	(11)	(3)
Derivative asset	193	33
Derivative liability, offset	16	27
Derivative liability	(39)	(26)
Cash collateral receivable (payable)	5	24
PAC | Commodity derivatives | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability, gross	0	0
PAC | Commodity derivatives | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	204	36
Derivative liability, gross	(55)	(53)
PAC | Commodity derivatives | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability, gross	0	0
PAC | Money market mutual funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	876	6
PAC | Money market mutual funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	876	6
PAC | Money market mutual funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
PAC | Money market mutual funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
PAC | Investment funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	31	25
PAC | Investment funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	31	25
PAC | Investment funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
PAC | Investment funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	$ 0	$ 0

Fair Value Measurements - PAC -

Fair Value Measurements - PAC - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 50,098	$ 49,866
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	57,902	60,633
PAC
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	9,199	8,612
PAC | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 11,005	$ 10,995

Fair Value Measurements - MEC (

Fair Value Measurements - MEC (Details) - Recurring - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, offset	$ (49)	$ (21)
Assets, fair value	12,257	9,918
Derivative liability, offset	80	56
Cash collateral (payable) receivable	31	35
Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	228	200
International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	2	5
Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	86	73
Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	3	2
Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1	6
United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	398	381
International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	7,031	5,906
Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	9,953	7,562
Level 1 | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
Level 1 | United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	228	200
Level 1 | International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 1 | Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 1 | Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 1 | Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 1 | United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	398	381
Level 1 | International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	7,031	5,906
Level 1 | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	2,235	2,180
Level 2 | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 2 | United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 2 | International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	2	5
Level 2 | Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	86	73
Level 2 | Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	3	2
Level 2 | Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1	6
Level 2 | United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 2 | International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 2 | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	118	197
Level 3 | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 3 | United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 3 | International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 3 | Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 3 | Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 3 | Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
Level 3 | United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 3 | International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Level 3 | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, offset	(49)	(21)
Derivative liability, offset	80	56
Commodity derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	15	1
Derivative liability	(2)	(1)
Commodity derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	436	73
Derivative liability	(134)	(90)
Commodity derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	88	135
Derivative liability	(56)	(19)
MEC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	1,360	738
Cash collateral (payable) receivable	0	0
MEC | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	543	41
MEC | United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	228	200
MEC | International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	2	5
MEC | Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	86	73
MEC | Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	3	2
MEC | Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1	6
MEC | United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	398	381
MEC | International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	8	9
MEC | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	23	17
MEC | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	1,201	648
MEC | Level 1 | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	543	41
MEC | Level 1 | United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	228	200
MEC | Level 1 | International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 1 | Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 1 | Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 1 | Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 1 | United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	398	381
MEC | Level 1 | International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	8	9
MEC | Level 1 | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	23	17
MEC | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	162	90
MEC | Level 2 | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
MEC | Level 2 | United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 2 | International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	2	5
MEC | Level 2 | Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	86	73
MEC | Level 2 | Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	3	2
MEC | Level 2 | Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	1	6
MEC | Level 2 | United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
MEC | Level 2 | International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
MEC | Level 2 | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
MEC | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	4	5
MEC | Level 3 | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
MEC | Level 3 | United States government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 3 | International government obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 3 | Corporate obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 3 | Municipal obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 3 | Agency, asset and mortgage-backed obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt securities	0	0
MEC | Level 3 | United States companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
MEC | Level 3 | International companies
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
MEC | Level 3 | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
MEC | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	68	4
Derivative asset, offset	(7)	(5)
Derivative liability	(4)	(2)
Derivative liability, offset	7	5
MEC | Commodity derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	1	0
Derivative liability	(2)	0
MEC | Commodity derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	70	4
Derivative liability	(5)	(4)
MEC | Commodity derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	4	5
Derivative liability	$ (4)	$ (3)

Fair Value Measurements - MEC -

Fair Value Measurements - MEC - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 50,098	$ 49,866
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	57,902	60,633
MEC
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	7,716	7,210
MEC | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 9,101	$ 9,130

Fair Value Measurements - LLC (

Fair Value Measurements - LLC (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 50,098	$ 49,866
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	57,902	60,633
MidAmerican Funding, LLC
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	7,956	7,450
MidAmerican Funding, LLC | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 9,417	$ 9,466

Fair Value Measurements - NPC (

Fair Value Measurements - NPC (Details) - Recurring - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 12,257	$ 9,918
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	9,953	7,562
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	2,235	2,180
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	118	197
Commodity derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	15	1
Derivative liability	(2)	(1)
Commodity derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	436	73
Derivative liability	(134)	(90)
Commodity derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	88	135
Derivative liability	(56)	(19)
NPC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	81	49
NPC | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	77	23
NPC | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
NPC | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	4	26
NPC | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	74	21
NPC | Money market mutual funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	74	21
NPC | Money market mutual funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
NPC | Money market mutual funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
NPC | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	3	2
NPC | Investment funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	3	2
NPC | Investment funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
NPC | Investment funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
NPC | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	4	26
Derivative liability	(18)	(11)
NPC | Commodity derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability	0	0
NPC | Commodity derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability	0	0
NPC | Commodity derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	4	26
Derivative liability	$ (18)	$ (11)

Fair Value Measurements - NPC -

Fair Value Measurements - NPC - Level 3 (Details) - NPC - Commodity - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 25	$ (44)	$ 15	$ (8)
Changes in fair value recognized in regulatory assets	6	13	11	(31)
Settlements	(45)	31	(40)	39
Ending balance	$ (14)	$ 0	$ (14)	$ 0

Fair Value Measurements - NPC_2

Fair Value Measurements - NPC - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 50,098	$ 49,866
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	57,902	60,633
NPC
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	2,498	2,496
NPC | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 3,122	$ 3,245

Fair Value Measurements - SPPC

Fair Value Measurements - SPPC (Details) - Recurring - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	$ 12,257	$ 9,918
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	9,953	7,562
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	2,235	2,180
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	118	197
Commodity derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	15	1
Derivative liability	(2)	(1)
Commodity derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	436	73
Derivative liability	(134)	(90)
Commodity derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	88	135
Derivative liability	(56)	(19)
SPPC
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	14	26
SPPC | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	12	17
SPPC | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	0	0
SPPC | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value	2	9
SPPC | Money market mutual funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	11	17
SPPC | Money market mutual funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	11	17
SPPC | Money market mutual funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
SPPC | Money market mutual funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
SPPC | Investment funds
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	1
SPPC | Investment funds | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	1
SPPC | Investment funds | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
SPPC | Investment funds | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
SPPC | Commodity derivatives
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	2	9
Derivative liability	(2)	(2)
SPPC | Commodity derivatives | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability	0	0
SPPC | Commodity derivatives | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	0	0
Derivative liability	0	0
SPPC | Commodity derivatives | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, gross	2	9
Derivative liability	$ (2)	$ (2)

Fair Value Measurements - SPP_2

Fair Value Measurements - SPPC - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 50,098	$ 49,866
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	57,902	60,633
SPPC
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	1,164	1,164
SPPC | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 1,328	$ 1,358

Fair Value Measurements - EEGH

Fair Value Measurements - EEGH (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 12,257	$ 9,918
Derivative liability	(130)	(121)
Recurring | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	96	20
Derivative liability	(5)	(9)
Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	9,953	7,562
Derivative liability	(3)	(6)
Recurring | Level 1 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	88	0
Derivative liability	0	0
Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	2,235	2,180
Derivative liability	(149)	(152)
Recurring | Level 2 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	8	20
Derivative liability	(5)	(9)
Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	118	197
Derivative liability	(58)	(19)
Recurring | Level 3 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0	0
Derivative liability	0	0
Money market mutual funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
Money market mutual funds | Recurring | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	75
Money market mutual funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	2,017	873
Money market mutual funds | Recurring | Level 1 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	75
Money market mutual funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Money market mutual funds | Recurring | Level 2 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Money market mutual funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Money market mutual funds | Recurring | Level 3 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Investment funds | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	13	0
Investment funds | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Investment funds | Recurring | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	13
Investment funds | Recurring | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	264	201
Investment funds | Recurring | Level 1 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	13
Investment funds | Recurring | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Investment funds | Recurring | Level 2 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Investment funds | Recurring | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0	0
Investment funds | Recurring | Level 3 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity securities	0
Commodity derivatives | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	490	188
Derivative liability	(112)	(54)
Commodity derivatives | Recurring | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	(1)	(1)
Commodity derivatives | Recurring | Level 1 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Commodity derivatives | Recurring | Level 2 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	(1)	(1)
Commodity derivatives | Recurring | Level 3 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability	0	0
Foreign currency exchange rate derivatives | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	8	20
Derivative liability	(4)	(2)
Foreign currency exchange rate derivatives | Recurring | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	8	20
Derivative liability	(4)	(2)
Foreign currency exchange rate derivatives | Recurring | Level 1 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Foreign currency exchange rate derivatives | Recurring | Level 2 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	8	20
Derivative liability	(4)	(2)
Foreign currency exchange rate derivatives | Recurring | Level 3 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	0	0
Derivative liability	0	0
Interest rate derivatives | Recurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset	42	62
Derivative liability	$ (14)	(65)
Interest rate derivatives | Recurring | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability		(6)
Interest rate derivatives | Recurring | Level 1 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability		0
Interest rate derivatives | Recurring | Level 2 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability		(6)
Interest rate derivatives | Recurring | Level 3 | EEGH
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative liability		$ 0

Fair Value Measurements - EEG_2

Fair Value Measurements - EEGH - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 50,098	$ 49,866
Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	57,902	60,633
EEGH
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	3,910	4,425
EEGH | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 4,327	$ 5,012

Commitments and Contingencies -

Commitments and Contingencies - Construction Commitments and Easements (Details) - MEC $ in Millions	Sep. 30, 2021USD ($)
Construction Commitment
Loss Contingencies [Line Items]
Purchase obligation	$ 405
Easements
Loss Contingencies [Line Items]
Purchase obligation	$ 87

Commitments and Contingencies_2

Commitments and Contingencies - Legal Matters (Details) - 2020 Wildfires - PAC naturalGasProducer in Thousands, a in Thousands, $ in Millions	1 Months Ended
	Sep. 30, 2020USD ($)anaturalGasProducer	Sep. 30, 2021USD ($)
Loss Contingencies [Line Items]
Number of acres burned | a	500
Number of structures destroyed | naturalGasProducer	2
Fire suppression costs	$ 150
Estimate of possible loss		$ 136

Commitments and Contingencies_3

Commitments and Contingencies - Environmental Laws and Regulations (Details) - PAC - Klamath Hydroelectric System $ in Millions	9 Months Ended
	Sep. 30, 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_4

Commitments and Contingencies - MEC (Details) - MEC $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Construction Commitment
Loss Contingencies [Line Items]
Purchase obligation	$ 405
Easements
Loss Contingencies [Line Items]
Purchase obligation	$ 87
Transmission
Loss Contingencies [Line Items]
Public utilities, approved return on equity adder	0.50%
Transmission | Unfavorable Regulatory Action
Loss Contingencies [Line Items]
Accrued liability for estimated transmission billings refunds	$ 9
Prior to September 2016 | Transmission
Loss Contingencies [Line Items]
Public utilities, approved return on equity	12.38%
November 2013 to February 2015 | Transmission
Loss Contingencies [Line Items]
Public utilities, approved return on equity	10.32%
Public utilities, intervenor proposed return on equity	9.15%
February 2015 through May 2016 | Transmission
Loss Contingencies [Line Items]
Public utilities, intervenor proposed return on equity	8.67%
Nov 2019 Order For Nov 2013 to Feb 2015 and Sept 2016 Forward | Transmission
Loss Contingencies [Line Items]
Public utilities, approved return on equity	9.88%
Public utilities, approved return on equity plus adder	10.38%
May 2020 Order For Nov 2013 to Feb 2015 and Sept 2016 Forward | Transmission
Loss Contingencies [Line Items]
Public utilities, approved return on equity	10.02%
Public utilities, approved return on equity plus adder	10.52%

Revenue from Contracts with C_3

Revenue from Contracts with Customers - BHE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Operating revenue	6,968	6,193	19,113	15,332
Energy
Disaggregation of Revenue [Line Items]
Operating revenue	5,225	4,451	14,375	11,504
Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	87	94	326	314
PAC
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,491	1,478	4,006	3,775
Operating revenue	1,491	1,479	4,031	3,829
PAC | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	1,491	1,479	4,031	3,829
PAC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	0	1	25	54
MidAmerican Funding
Disaggregation of Revenue [Line Items]
Total Customer Revenue	950	806	2,702	2,098
Operating revenue	966	812	2,726	2,114
MidAmerican Funding | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	966	812	2,726	2,114
MidAmerican Funding | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	16	6	24	16
NV Energy
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,078	1,034	2,425	2,336
Operating revenue	1,085	1,042	2,443	2,359
NV Energy | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	1,085	1,042	2,443	2,359
NV Energy | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	7	8	18	23
Northern Powergrid
Disaggregation of Revenue [Line Items]
Total Customer Revenue	249	214	773	650
Operating revenue	277	246	857	733
Northern Powergrid | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	277	246	857	733
Northern Powergrid | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	28	32	84	83
BHE Pipeline Group
Disaggregation of Revenue [Line Items]
Total Customer Revenue	783	264	2,543	885
Operating revenue	785	264	2,584	890
BHE Pipeline Group | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	785	264	2,584	890
BHE Pipeline Group | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	2	0	41	5
BHE Transmission
Disaggregation of Revenue [Line Items]
Total Customer Revenue	187	175	552	516
Operating revenue	185	175	547	516
BHE Transmission | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	185	175	547	516
BHE Transmission | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	(2)	0	(5)	0
BHE Renewables
Disaggregation of Revenue [Line Items]
Total Customer Revenue	288	270	693	641
BHE Renewables | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	316	309	773	731
BHE Renewables | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	28	39	80	90
BHE and Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	112	116	355	289
Operating revenue	120	124	414	332
BHE and Other | Energy
Disaggregation of Revenue [Line Items]
Operating revenue	120	124	414	332
BHE and Other | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	8	8	59	43
Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,430	3,927	12,111	10,109
Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3,096	2,981	7,615	7,214
Regulated | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	100	84	707	422
Regulated | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	203	130	504	266
Regulated | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	521	455	1,512	1,336
Regulated | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	486	235	1,693	782
Regulated | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	24	42	80	89
Regulated | PAC
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,491	1,478	4,006	3,775
Regulated | PAC | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,352	1,344	3,685	3,532
Regulated | PAC | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | PAC | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	58	59	124	76
Regulated | PAC | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	55	33	117	79
Regulated | PAC | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | PAC | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	26	42	80	88
Regulated | MidAmerican Funding
Disaggregation of Revenue [Line Items]
Total Customer Revenue	948	802	2,689	2,085
Regulated | MidAmerican Funding | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	736	661	1,704	1,539
Regulated | MidAmerican Funding | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	84	70	633	341
Regulated | MidAmerican Funding | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	113	56	307	157
Regulated | MidAmerican Funding | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	15	15	45	48
Regulated | MidAmerican Funding | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | MidAmerican Funding | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | NV Energy
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,078	1,035	2,424	2,335
Regulated | NV Energy | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,008	977	2,227	2,144
Regulated | NV Energy | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	16	14	74	81
Regulated | NV Energy | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	19	14	44	34
Regulated | NV Energy | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	35	30	78	75
Regulated | NV Energy | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | NV Energy | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	1	1
Regulated | Northern Powergrid
Disaggregation of Revenue [Line Items]
Total Customer Revenue	241	208	747	632
Regulated | Northern Powergrid | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | Northern Powergrid | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | Northern Powergrid | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | Northern Powergrid | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	241	208	747	632
Regulated | Northern Powergrid | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | Northern Powergrid | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Pipeline Group
Disaggregation of Revenue [Line Items]
Total Customer Revenue	526	264	1,817	885
Regulated | BHE Pipeline Group | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Pipeline Group | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Pipeline Group | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	14	0	31	0
Regulated | BHE Pipeline Group | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Pipeline Group | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	514	264	1,787	885
Regulated | BHE Pipeline Group | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	(2)	0	(1)	0
Regulated | BHE Transmission
Disaggregation of Revenue [Line Items]
Total Customer Revenue	175	169	525	502
Regulated | BHE Transmission | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Transmission | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Transmission | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Transmission | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	175	169	525	502
Regulated | BHE Transmission | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Transmission | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Renewables
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Renewables | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Renewables | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Renewables | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Renewables | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Renewables | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE Renewables | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE and Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	(29)	(29)	(97)	(105)
Regulated | BHE and Other | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	(1)	(1)	(1)
Regulated | BHE and Other | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE and Other | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	(1)	1	(2)	(1)
Regulated | BHE and Other | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Regulated | BHE and Other | Interstate pipeline
Disaggregation of Revenue [Line Items]
Total Customer Revenue	(28)	(29)	(94)	(103)
Regulated | BHE and Other | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Nonregulated | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	708	430	1,938	1,081
Nonregulated | PAC | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
Nonregulated | MidAmerican Funding | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2	4	13	13
Nonregulated | NV Energy | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	(1)	1	1
Nonregulated | Northern Powergrid | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	8	6	26	18
Nonregulated | BHE Pipeline Group | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	257	0	726	0
Nonregulated | BHE Transmission | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	12	6	27	14
Nonregulated | BHE Renewables | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	288	270	693	641
Nonregulated | BHE and Other | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 141	$ 145	$ 452	$ 394

Revenue from Contracts with C_4

Revenue from Contracts with Customers - BHE - Real Estate Services (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Operating revenue	6,968	6,193	19,113	15,332
Real estate
Disaggregation of Revenue [Line Items]
Operating revenue	1,743	1,742	4,738	3,828
Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	87	94	326	314
HomeServices
Disaggregation of Revenue [Line Items]
Operating revenue	1,743	1,742	4,738	3,828
HomeServices | Real estate
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,586	1,472	4,219	3,237
Operating revenue	1,743	1,742	4,738	3,828
HomeServices | Brokerage
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,563	1,449	4,154	3,183
HomeServices | Franchise
Disaggregation of Revenue [Line Items]
Total Customer Revenue	23	23	65	54
HomeServices | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	$ 157	$ 270	$ 519	$ 591

Revenue from Contracts with C_5

Revenue from Contracts with Customers - BHE - Remaining Performance Obligation Total (Details) $ in Millions	Sep. 30, 2021USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 24,138
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 2,761
Performance obligations expected to be satisfied, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 21,377
Performance obligations expected to be satisfied, expected timing of satisfaction, period
BHE Pipeline Group
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 23,963
BHE Pipeline Group | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 2,586
Performance obligations expected to be satisfied, expected timing of satisfaction, period	12 months
BHE Pipeline Group | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 21,377
Performance obligations expected to be satisfied, expected timing of satisfaction, period
BHE Transmission
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 175
BHE Transmission | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 175
Performance obligations expected to be satisfied, expected timing of satisfaction, period	12 months
BHE Transmission | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 0
Performance obligations expected to be satisfied, expected timing of satisfaction, period

Revenue from Contracts with C_6

Revenue from Contracts with Customers - PAC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Operating revenue	6,968	6,193	19,113	15,332
Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	87	94	326	314
Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,430	3,927	12,111	10,109
Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3,096	2,981	7,615	7,214
Regulated | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	203	130	504	266
Regulated | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	521	455	1,512	1,336
Regulated | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	24	42	80	89
PAC
Disaggregation of Revenue [Line Items]
Operating revenue	1,491	1,479	4,031	3,829
PAC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	0	1	25	54
PAC | Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,491	1,478	4,006	3,775
PAC | Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1,352	1,344	3,685	3,532
PAC | Regulated | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	58	59	124	76
PAC | Regulated | Transmission and distribution
Disaggregation of Revenue [Line Items]
Total Customer Revenue	55	33	117	79
PAC | Regulated | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	26	42	80	88
PAC | Regulated | Residential | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	530	519	1,442	1,363
PAC | Regulated | Commercial | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	428	418	1,180	1,122
PAC | Regulated | Industrial | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	296	293	849	838
PAC | Regulated | Other retail | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 98	$ 114	$ 214	$ 209

Revenue from Contracts with C_7

Revenue from Contracts with Customers - MEC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Operating revenue	6,968	6,193	19,113	15,332
Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	87	94	326	314
MEC
Disaggregation of Revenue [Line Items]
Total Customer Revenue	950	806	2,702	2,090
Operating revenue	966	812	2,726	2,106
MEC | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2		13
MEC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	16	6	24	16
Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,430	3,927	12,111	10,109
Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3,096	2,981	7,615	7,214
Regulated | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	100	84	707	422
Regulated | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	203	130	504	266
Regulated | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	24	42	80	89
Regulated | MEC | Retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	820	732	2,337	1,881
Regulated | MEC | Retail | Residential
Disaggregation of Revenue [Line Items]
Total Customer Revenue	307	287	1,005	788
Regulated | MEC | Retail | Commercial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	124	112	422	313
Regulated | MEC | Retail | Industrial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	326	282	761	649
Regulated | MEC | Retail | Natural gas transportation services
Disaggregation of Revenue [Line Items]
Total Customer Revenue	9	8	28	26
Regulated | MEC | Retail | Other retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	54	43	121	105
Regulated | MEC | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	113	56	307	157
Regulated | MEC | Multi-value transmission projects | Multi-value transmission projects
Disaggregation of Revenue [Line Items]
Total Customer Revenue	15	14	45	47
Nonregulated | MEC | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue		4		5
Regulated electric | MEC
Disaggregation of Revenue [Line Items]
Operating revenue	854	728	1,985	1,717
Regulated electric | Regulated | MEC
Disaggregation of Revenue [Line Items]
Total Customer Revenue	839	722	1,963	1,703
Operating revenue	854	728	1,985	1,717
Regulated electric | Regulated | MEC | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	736	662	1,704	1,540
Regulated electric | Regulated | MEC | Retail electric | Residential
Disaggregation of Revenue [Line Items]
Total Customer Revenue	255	241	586	555
Regulated electric | Regulated | MEC | Retail electric | Commercial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	107	99	258	242
Regulated electric | Regulated | MEC | Retail electric | Industrial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	321	280	741	640
Regulated electric | Regulated | MEC | Retail electric | Other retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	53	42	119	103
Regulated electric | Regulated | MEC | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	88	46	214	116
Regulated electric | Regulated | MEC | Multi-value transmission projects | Multi-value transmission projects
Disaggregation of Revenue [Line Items]
Total Customer Revenue	15	14	45	47
Regulated electric | Regulated | MEC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	15	6	22	14
Regulated natural gas | MEC
Disaggregation of Revenue [Line Items]
Operating revenue	110	80	728	384
Regulated natural gas | Regulated | MEC
Disaggregation of Revenue [Line Items]
Total Customer Revenue	109	80	726	382
Operating revenue	110	80	728	384
Regulated natural gas | Regulated | MEC | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	84	70	633	341
Regulated natural gas | Regulated | MEC | Retail gas | Residential
Disaggregation of Revenue [Line Items]
Total Customer Revenue	52	46	419	233
Regulated natural gas | Regulated | MEC | Retail gas | Commercial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	17	13	164	71
Regulated natural gas | Regulated | MEC | Retail gas | Industrial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	5	2	20	9
Regulated natural gas | Regulated | MEC | Retail gas | Natural gas transportation services
Disaggregation of Revenue [Line Items]
Total Customer Revenue	9	8	28	26
Regulated natural gas | Regulated | MEC | Retail gas | Other retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1	2	2
Regulated natural gas | Regulated | MEC | Wholesale
Disaggregation of Revenue [Line Items]
Total Customer Revenue	25	10	93	41
Regulated natural gas | Regulated | MEC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	1	0	2	2
Other | MEC
Disaggregation of Revenue [Line Items]
Operating revenue	2	4	13	5
Other | Nonregulated | MEC
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2	4	13	5
Operating revenue	2	4	13	5
Other | Nonregulated | MEC | Other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2	4	13	5
Other | Nonregulated | MEC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	$ 0	$ 0	$ 0	$ 0

Revenue from Contracts with C_8

Revenue from Contracts with Customers - LLC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Nonregulated | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	708	430	1,938	1,081
Other | MidAmerican Funding, LLC | Nonregulated | Nonregulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 0	$ 0	$ 0	$ 8

Revenue from Contracts with C_9

Revenue from Contracts with Customers - NPC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Operating revenue	6,968	6,193	19,113	15,332
Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	87	94	326	314
Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,430	3,927	12,111	10,109
Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3,096	2,981	7,615	7,214
NPC
Disaggregation of Revenue [Line Items]
Operating revenue	802	808	1,731	1,706
NPC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	6	7	16	20
NPC | Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	796	801	1,715	1,686
NPC | Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	768	780	1,658	1,638
NPC | Regulated | Wholesale, transmission and other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	28	21	57	48
NPC | Customer Revenue | Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	762	772	1,641	1,618
NPC | Customer Revenue | Regulated | Retail electric | Residential
Disaggregation of Revenue [Line Items]
Total Customer Revenue	477	495	998	993
NPC | Customer Revenue | Regulated | Retail electric | Commercial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	129	127	323	317
NPC | Customer Revenue | Regulated | Retail electric | Industrial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	152	147	310	300
NPC | Customer Revenue | Regulated | Retail electric | Other retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4	3	10	8
NPC | Distribution only service | Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 6	$ 8	$ 17	$ 20

Revenue from Contracts with _10

Revenue from Contracts with Customers - SPPC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Operating revenue	6,968	6,193	19,113	15,332
Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	87	94	326	314
Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	4,430	3,927	12,111	10,109
Regulated | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3,096	2,981	7,615	7,214
Regulated | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	100	84	707	422
SPPC
Disaggregation of Revenue [Line Items]
Operating revenue	282	235	711	652
SPPC | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	0	1	3	4
SPPC | Regulated electric
Disaggregation of Revenue [Line Items]
Operating revenue	266	220	636	569
SPPC | Regulated electric | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	0	1	2	3
SPPC | Regulated natural gas
Disaggregation of Revenue [Line Items]
Operating revenue	16	15	75	83
SPPC | Regulated natural gas | Other revenue
Disaggregation of Revenue [Line Items]
Operating revenue	0	0	1	1
SPPC | Regulated
Disaggregation of Revenue [Line Items]
Total Customer Revenue	282	234	708	648
SPPC | Regulated | Wholesale, transmission and other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	18	13	46	37
SPPC | Regulated | Regulated electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	266	219	634	566
SPPC | Regulated | Regulated electric | Wholesale, transmission and other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	18	13	46	37
SPPC | Regulated | Regulated natural gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	16	15	74	82
SPPC | Regulated | Regulated natural gas | Wholesale, transmission and other
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
SPPC | Regulated | Total retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	264	221	662	611
SPPC | Regulated | Total retail | Regulated electric | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	248	206	588	529
SPPC | Regulated | Total retail | Regulated natural gas | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	16	15	74	82
SPPC | Regulated | Customer Revenue
Disaggregation of Revenue [Line Items]
Total Customer Revenue	263	220	660	608
SPPC | Regulated | Customer Revenue | Residential
Disaggregation of Revenue [Line Items]
Total Customer Revenue	102	87	279	262
SPPC | Regulated | Customer Revenue | Commercial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	87	74	220	203
SPPC | Regulated | Customer Revenue | Industrial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	73	58	157	140
SPPC | Regulated | Customer Revenue | Other retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1	4	3
SPPC | Regulated | Customer Revenue | Regulated electric | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	247	205	586	526
SPPC | Regulated | Customer Revenue | Regulated electric | Retail electric | Residential
Disaggregation of Revenue [Line Items]
Total Customer Revenue	91	76	229	208
SPPC | Regulated | Customer Revenue | Regulated electric | Retail electric | Commercial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	84	71	202	183
SPPC | Regulated | Customer Revenue | Regulated electric | Retail electric | Industrial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	71	57	151	132
SPPC | Regulated | Customer Revenue | Regulated electric | Retail electric | Other retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1	4	3
SPPC | Regulated | Customer Revenue | Regulated natural gas | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	16	15	74	82
SPPC | Regulated | Customer Revenue | Regulated natural gas | Retail gas | Residential
Disaggregation of Revenue [Line Items]
Total Customer Revenue	11	11	50	54
SPPC | Regulated | Customer Revenue | Regulated natural gas | Retail gas | Commercial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	3	3	18	20
SPPC | Regulated | Customer Revenue | Regulated natural gas | Retail gas | Industrial
Disaggregation of Revenue [Line Items]
Total Customer Revenue	2	1	6	8
SPPC | Regulated | Customer Revenue | Regulated natural gas | Retail gas | Other retail
Disaggregation of Revenue [Line Items]
Total Customer Revenue	0	0	0	0
SPPC | Regulated | Distribution only service
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1	2	3
SPPC | Regulated | Distribution only service | Regulated electric | Retail electric
Disaggregation of Revenue [Line Items]
Total Customer Revenue	1	1	2	3
SPPC | Regulated | Distribution only service | Regulated natural gas | Retail gas
Disaggregation of Revenue [Line Items]
Total Customer Revenue	$ 0	$ 0	$ 0	$ 0

Revenue from Contracts with _11

Revenue from Contracts with Customers - EEGH (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue from External Customer [Line Items]
Total Customer Revenue	$ 5,138	$ 4,357	$ 14,049	$ 11,190
Operating revenue	6,968	6,193	19,113	15,332
EEGH
Revenue from External Customer [Line Items]
Total Customer Revenue	457	530	1,377	1,594
Operating revenue	456	531	1,379	1,597
Regulated
Revenue from External Customer [Line Items]
Total Customer Revenue	4,430	3,927	12,111	10,109
Regulated | EEGH
Revenue from External Customer [Line Items]
Total Customer Revenue	264	337	804	988
Nonregulated | EEGH
Revenue from External Customer [Line Items]
Total Customer Revenue	193	193	573	606
Regulated gas transportation and storage [Member] | Regulated
Revenue from External Customer [Line Items]
Total Customer Revenue	100	84	707	422
Regulated gas transportation and storage [Member] | Regulated | EEGH
Revenue from External Customer [Line Items]
Total Customer Revenue	249	311	774	957
Wholesale | Regulated
Revenue from External Customer [Line Items]
Total Customer Revenue	203	130	504	266
Wholesale | Regulated | EEGH
Revenue from External Customer [Line Items]
Total Customer Revenue	14	25	31	27
Regulated other [Member] | Regulated
Revenue from External Customer [Line Items]
Total Customer Revenue	24	42	80	89
Regulated other [Member] | Regulated | EEGH
Revenue from External Customer [Line Items]
Total Customer Revenue	1	1	(1)	4
Other revenue
Revenue from External Customer [Line Items]
Operating revenue	87	94	326	314
Other revenue | EEGH
Revenue from External Customer [Line Items]
Operating revenue	$ (1)	$ 1	$ 2	$ 3

Revenue from Contracts with _12

Revenue from Contracts with Customers - EEGH - Remaining Performance Obligation (Details) $ in Millions	Sep. 30, 2021USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 24,138
EEGH
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	17,987
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-07-01 | EEGH
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 1,574
Performance obligations expected to be satisfied, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 2,761
Performance obligations expected to be satisfied, expected timing of satisfaction, period	12 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-07-01 | EEGH
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 16,413
Performance obligations expected to be satisfied, expected timing of satisfaction, period
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligations expected to be satisfied	$ 21,377
Performance obligations expected to be satisfied, expected timing of satisfaction, period

BHE Shareholders' Equity (Detai

BHE Shareholders' Equity (Details) - USD ($) $ in Millions	Jul. 22, 2021	Sep. 30, 2021	Sep. 30, 2021
Class of Stock [Line Items]
Stock redeemed		$ 1,450	$ 1,450
Redeemable Preferred Stock | Natural Gas Transmission and Storage
Class of Stock [Line Items]
Stock redeemed (in shares)	1,450,003
Preferred Stock, dividend rate	4.00%
Stock redeemed	$ 1,450

Components of Other Comprehen_3

Components of Other Comprehensive Income (Loss), Net - BHE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	$ 49,365	$ 33,785	$ 46,977	$ 32,578
Other comprehensive income (loss)	(163)	242	33	(177)
Balance	49,616	36,869	49,616	36,869
Unrecognized Amounts on Retirement Benefits
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance			(492)	(417)
Other comprehensive income (loss)			44	38
Balance	(448)	(379)	(448)	(379)
Foreign Currency Translation Adjustment
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance			(1,062)	(1,296)
Other comprehensive income (loss)			(59)	(195)
Balance	(1,121)	(1,491)	(1,121)	(1,491)
Unrealized Losses on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance			(8)	7
Other comprehensive income (loss)			48	(20)
Balance	40	(13)	40	(13)
Noncontrolling Interest
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance			(10)	0
Other comprehensive income (loss)			4	0
Balance	(6)	0	(6)	0
Accumulated Other Comprehensive (Loss) Income, Net
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	(1,360)	(2,125)	(1,552)	(1,706)
Other comprehensive income (loss)	(163)	242	29	(177)
Balance	$ (1,523)	$ (1,883)	$ (1,523)	$ (1,883)

Components of Other Comprehen_4

Components of Other Comprehensive Income (Loss), Net - EEGH (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		9 Months Ended
	Jul. 31, 2020	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ 33,785	$ 49,365	$ 33,785	$ 46,977	$ 32,578
Other comprehensive income (loss)		(163)	242	33	(177)
Balance		49,616	36,869	49,616	36,869
EEGH
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	8,456	7,398	8,456	6,995	10,229
Other comprehensive income (loss)		(2)	107	15	23
Balance		7,390	6,550	7,390	6,550
Amount of loss reclassified from AOCI to income	141
Amount of loss reclassified from AOCI to income, after-tax	105
Unrecognized Amounts on Retirement Benefits
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance				(492)	(417)
Other comprehensive income (loss)				44	38
Balance		(448)	(379)	(448)	(379)
Unrecognized Amounts on Retirement Benefits | EEGH
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance				(12)	(106)
Other comprehensive income (loss)				4	(1)
Balance		(8)	(107)	(8)	(107)
Unrealized Losses on Cash Flow Hedges
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance				(8)	7
Other comprehensive income (loss)				48	(20)
Balance		40	(13)	40	(13)
Unrealized Losses on Cash Flow Hedges | EEGH
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance				(51)	(81)
Other comprehensive income (loss)				11	24
Balance		(40)	(57)	(40)	(57)
Noncontrolling Interest
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance				(10)	0
Other comprehensive income (loss)				4	0
Balance		(6)	0	(6)	0
Noncontrolling Interest | EEGH
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance				(10)	0
Other comprehensive income (loss)				4	0
Balance		(6)	0	(6)	0
Accumulated Other Comprehensive (Loss) Income, Net
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(2,125)	(1,360)	(2,125)	(1,552)	(1,706)
Other comprehensive income (loss)		(163)	242	29	(177)
Balance		(1,523)	(1,883)	(1,523)	(1,883)
Accumulated Other Comprehensive (Loss) Income, Net | EEGH
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ (271)	(40)	(271)	(53)	(187)
Other comprehensive income (loss)		(2)	107	11	23
Balance		$ (42)	$ (164)	$ (42)	$ (164)

Segment Information - BHE (Deta

Segment Information - BHE (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
Segment Reporting Information [Line Items]
Operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Depreciation and amortization	960	800	2,834	2,357
Operating income	1,834	1,547	4,375	3,402
Interest expense	531	504	1,593	1,490
Capitalized interest	18	24	46	60
Allowance for equity funds	34	50	90	122
Interest and dividend income	18	17	65	57
Gains on marketable securities, net	294	1,797	1,142	2,407
Other, net	8	36	64	61
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Total earnings on common shares	1,896	2,842	4,106	4,628
Assets	131,554		131,554		$ 127,316
PAC
Segment Reporting Information [Line Items]
Operating revenue	1,491	1,479	4,031	3,829
Depreciation and amortization	272	234	811	696
Operating income	394	361	911	851
Interest expense	110	107	322	319
Total earnings on common shares	333	286	728	629
Assets	28,230		28,230		26,862
MidAmerican Funding
Segment Reporting Information [Line Items]
Operating revenue	966	812	2,726	2,114
Depreciation and amortization	218	179	634	530
Operating income	287	232	438	444
Interest expense	81	79	237	238
Total earnings on common shares	373	337	728	695
Assets	25,038		25,038		23,530
NV Energy
Segment Reporting Information [Line Items]
Operating revenue	1,085	1,042	2,443	2,359
Depreciation and amortization	138	128	411	377
Operating income	348	347	563	587
Interest expense	51	56	154	171
Total earnings on common shares	282	249	416	367
Assets	15,105		15,105		14,501
Northern Powergrid
Segment Reporting Information [Line Items]
Operating revenue	277	246	857	733
Depreciation and amortization	73	69	217	195
Operating income	126	106	403	327
Interest expense	33	34	98	97
Total earnings on common shares	83	26	162	172
Assets	9,043		9,043		8,782
BHE Pipeline Group
Segment Reporting Information [Line Items]
Operating revenue	785	264	2,584	890
Depreciation and amortization	124	45	363	134
Operating income	303	101	1,166	442
Interest expense	33	15	111	44
Total earnings on common shares	144	78	627	321
Assets	19,993		19,993		19,541
BHE Transmission
Segment Reporting Information [Line Items]
Operating revenue	185	175	547	516
Depreciation and amortization	59	61	177	176
Operating income	90	79	256	236
Interest expense	39	38	117	111
Total earnings on common shares	65	58	184	173
Assets	9,383		9,383		9,208
BHE Renewables
Segment Reporting Information [Line Items]
Operating revenue	316	309	773	731
Depreciation and amortization	61	72	182	214
Operating income	149	143	279	244
Interest expense	39	41	119	125
Total earnings on common shares	163	162	360	395
Assets	11,766		11,766		12,004
HomeServices
Segment Reporting Information [Line Items]
Operating revenue	1,743	1,742	4,738	3,828
Depreciation and amortization	14	11	37	34
Operating income	135	239	426	336
Interest expense	1	1	3	9
Total earnings on common shares	102	177	321	246
Assets	5,065		5,065		4,955
BHE and Other
Segment Reporting Information [Line Items]
Operating revenue	120	124	414	332
Depreciation and amortization	1	1	2	1
Operating income	2	(61)	(67)	(65)
Interest expense	144	133	432	376
Total earnings on common shares	351	1,469	580	1,630
Assets	7,931		7,931		$ 7,933
United States
Segment Reporting Information [Line Items]
Operating revenue	6,499	5,773	17,700	14,086
Income (loss) before income tax expense (benefit) and equity income (loss)	1,511	2,839	3,699	4,220
United Kingdom
Segment Reporting Information [Line Items]
Operating revenue	277	246	857	733
Income (loss) before income tax expense (benefit) and equity income (loss)	107	82	343	250
Canada
Segment Reporting Information [Line Items]
Operating revenue	180	174	537	512
Income (loss) before income tax expense (benefit) and equity income (loss)	49	44	134	130
Philippines and other
Segment Reporting Information [Line Items]
Operating revenue	12	0	19	1
Income (loss) before income tax expense (benefit) and equity income (loss)	$ 8	$ 2	$ 13	$ 19

Segment Information - BHE - Goo

Segment Information - BHE - Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2021USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 11,506
Acquisitions	70
Foreign currency translation	(4)
Ending balance	11,572
PAC
Goodwill [Roll Forward]
Beginning balance	1,129
Acquisitions	0
Foreign currency translation	0
Ending balance	1,129
MidAmerican Funding
Goodwill [Roll Forward]
Beginning balance	2,102
Acquisitions	0
Foreign currency translation	0
Ending balance	2,102
NV Energy
Goodwill [Roll Forward]
Beginning balance	2,369
Acquisitions	0
Foreign currency translation	0
Ending balance	2,369
Northern Powergrid
Goodwill [Roll Forward]
Beginning balance	1,000
Acquisitions	0
Foreign currency translation	(10)
Ending balance	990
BHE Pipeline Group
Goodwill [Roll Forward]
Beginning balance	1,803
Acquisitions	11
Foreign currency translation	0
Ending balance	1,814
BHE Transmission
Goodwill [Roll Forward]
Beginning balance	1,551
Acquisitions	0
Foreign currency translation	6
Ending balance	1,557
BHE Renewables
Goodwill [Roll Forward]
Beginning balance	95
Acquisitions	0
Foreign currency translation	0
Ending balance	95
HomeServices
Goodwill [Roll Forward]
Beginning balance	1,457
Acquisitions	59
Foreign currency translation	0
Ending balance	$ 1,516

Segment Information - MEC (Deta

Segment Information - MEC (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)reportableSegmentoperatingSegment	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | operatingSegment			8
Operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating income	1,834	1,547	4,375	3,402
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for equity funds	34	50	90	122
Other, net	8	36	64	61
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Assets	131,554		$ 131,554		$ 127,316
MEC
Segment Reporting Information [Line Items]
Number of reportable segments | reportableSegment			2
Operating revenue	966	812	$ 2,726	2,106
Operating income	287	232	438	438
Interest expense	(76)	(74)	(224)	(224)
Allowance for borrowed funds	4	5	8	12
Allowance for equity funds	11	16	25	33
Other, net	8	14	34	30
Income (loss) before income tax expense (benefit) and equity income (loss)	234	193	281	289
Assets	22,944		22,944		21,437
MEC | Regulated electric
Segment Reporting Information [Line Items]
Operating revenue	854	728	1,985	1,717
Operating income	289	238	401	398
Assets	21,063		21,063		19,892
MEC | Regulated natural gas
Segment Reporting Information [Line Items]
Operating revenue	110	80	728	384
Operating income	(2)	(6)	37	40
Assets	1,874		1,874		1,544
MEC | Other
Segment Reporting Information [Line Items]
Operating revenue	2	$ 4	13	$ 5
Assets	$ 7		$ 7		$ 1

Segment Information - LLC (Deta

Segment Information - LLC (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)reportableSegmentoperatingSegment	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | operatingSegment			8
Operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating income	1,834	1,547	4,375	3,402
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for equity funds	34	50	90	122
Other, net	8	36	64	61
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Assets	131,554		$ 131,554		$ 127,316
MidAmerican Funding, LLC
Segment Reporting Information [Line Items]
Number of reportable segments | reportableSegment			2
Operating revenue	966	812	$ 2,726	2,114
Operating income	287	232	438	444
Interest expense	(81)	(79)	(237)	(238)
Allowance for borrowed funds	4	5	8	12
Allowance for equity funds	11	16	25	33
Other, net	8	15	34	30
Income (loss) before income tax expense (benefit) and equity income (loss)	229	189	268	281
Assets	24,218		24,218		22,711
MidAmerican Funding, LLC | Regulated electric
Segment Reporting Information [Line Items]
Operating revenue	854	728	1,985	1,717
Operating income	289	238	401	398
Assets	22,254		22,254		21,083
MidAmerican Funding, LLC | Regulated natural gas
Segment Reporting Information [Line Items]
Operating revenue	110	80	728	384
Operating income	(2)	(6)	37	40
Assets	1,953		1,953		1,623
MidAmerican Funding, LLC | Other
Segment Reporting Information [Line Items]
Operating revenue	2	4	13	13
Operating income	0	$ 0	0	$ 6
Assets	$ 11		$ 11		$ 5

Segment Information - SPPC (Det

Segment Information - SPPC (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021USD ($)	Sep. 30, 2020USD ($)	Sep. 30, 2021USD ($)reportableSegmentoperatingSegment	Sep. 30, 2020USD ($)	Dec. 31, 2020USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | operatingSegment			8
Operating revenue	$ 6,968	$ 6,193	$ 19,113	$ 15,332
Operating income	1,834	1,547	4,375	3,402
Interest expense	(531)	(504)	(1,593)	(1,490)
Allowance for equity funds	34	50	90	122
Interest and dividend income	18	17	65	57
Other, net	8	36	64	61
Income (loss) before income tax expense (benefit) and equity income (loss)	1,675	2,967	4,189	4,619
Assets	131,554		$ 131,554		$ 127,316
SPPC
Segment Reporting Information [Line Items]
Number of reportable segments | reportableSegment			2
Operating revenue	282	235	$ 711	652
Operating income	75	68	139	131
Interest expense	(14)	(14)	(41)	(42)
Capitalized interest	1	0	2	1
Allowance for equity funds	2	1	5	3
Interest and dividend income	3	1	6	3
Other, net	3	2	9	4
Income (loss) before income tax expense (benefit) and equity income (loss)	70	58	120	100
Assets	4,130		4,130		3,919
SPPC | Regulated electric
Segment Reporting Information [Line Items]
Regulated electric	266	220	636	569
Operating revenue	266	220	636	569
Operating income	74	66	126	119
Assets	3,744		3,744		3,540
SPPC | Regulated natural gas
Segment Reporting Information [Line Items]
Regulated natural gas	16	15	75	83
Operating revenue	16	15	75	83
Operating income	1	$ 2	13	$ 12
Assets	354		354		342
SPPC | Other
Segment Reporting Information [Line Items]
Assets	$ 32		$ 32		$ 37

Variable Interest Entities - EE

Variable Interest Entities - EEGH (Details) - USD ($) $ in Millions	1 Months Ended				3 Months Ended		9 Months Ended
	Nov. 30, 2020	Jul. 31, 2020	Dec. 31, 2019	Nov. 30, 2019	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Dec. 31, 2020
EEGH | Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Ownership interest							75.00%	25.00%
Percentage interest distributed		25.00%
EEGH | General Partner | Primary Beneficiary | Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage							100.00%
EEGH | Limited Partner | Primary Beneficiary | Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Variable interest entity, ownership percentage							25.00%
EEGH | Not Discontinued Operations | GT&S Transaction | Cove Point LNG, LP
Schedule of Equity Method Investments [Line Items]
Percentage interest distributed	50.00%
EEGH | Cove Point LNG, LP | Dominion Energy, Inc.
Schedule of Equity Method Investments [Line Items]
Ownership interest				75.00%
EEGH | Cove Point LNG, LP | Not Discontinued Operations | GT&S Transaction
Schedule of Equity Method Investments [Line Items]
Percentage interest distributed	50.00%
EEGH | Carolina Gas Services, Inc. | Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Due to related parties					$ 31		$ 31		$ 22
EEGH | Carolina Gas Services, Inc. | Shared Services | Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Amounts of transaction					$ 3	$ 3	$ 9	$ 10
EEGH | Dominion Energy Questar Pipeline Services, Inc. | Shared Services | Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Amounts of transaction						7		21
EEGH | Dominion Energy Services, Inc. | Shared Services | Not Primary Beneficiary
Schedule of Equity Method Investments [Line Items]
Amounts of transaction						$ 22		$ 80
Dominion Energy, Inc. | Cove Point LNG, LP
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		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Related Party Transaction [Line Items]
Capitalized expenditures			$ 4,594	$ 4,607
EEGH
Related Party Transaction [Line Items]
Capitalized expenditures			291	258
EEGH | Affiliated Entity
Related Party Transaction [Line Items]
Sales of natural gas and transportation and storage services	$ 7	$ 60	21	188
Purchases of natural gas and transportation and storage services / Services provided to related parties	1	3	4	9
Services provided by related parties	16	34	31	114
Capitalized expenditures		5		12
EEGH | Affiliated Entity | Atlantic Coast Pipeline
Related Party Transaction [Line Items]
Sales of natural gas and transportation and storage services	$ 8	$ 17	$ 24	$ 78

Related Party Transactions - _2

Related Party Transactions - EEGH - Narrative (Details) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Jun. 29, 2021	Feb. 28, 2021	Dec. 31, 2020
EEGH
Related Party Transaction [Line Items]
Payments for distributions to affiliates		$ 353,000,000	$ 4,155,000,000
Face amount				$ 650,000,000	$ 2,250,000,000
Affiliated Entity | EEGH
Related Party Transaction [Line Items]
Interest income related to affiliated notes receivable		3,000,000
Affiliated Entity | EEGH | Other Assets Due from Affiliates
Related Party Transaction [Line Items]
Due from affiliates		4,000,000					$ 7,000,000
Affiliated Entity | EEGH | Natural Gas Imbalance | Other Current Liabilities
Related Party Transaction [Line Items]
Due to affiliates		3,000,000
Affiliated Entity | CPMLP Holdings Company, LLC
Related Party Transaction [Line Items]
Interest charges	$ 3,000,000
Dominion Energy, Inc. | Affiliated Entity
Related Party Transaction [Line Items]
Interest charges	3,000,000
Dominion Energy, Inc. | Affiliated Entity | EEGH
Related Party Transaction [Line Items]
Payments for distributions to affiliates			4,200,000,000
Dominion Energy, Inc. | Affiliated Entity | EEGH | Notes Receivable
Related Party Transaction [Line Items]
Interest income related to affiliated notes receivable	$ 9,000,000		32,000,000
East Ohio | Affiliated Entity | EEGH | Notes Receivable
Related Party Transaction [Line Items]
Interest income related to affiliated notes receivable			$ 33,000,000
Berkshire Hathaway Energy | Affiliated Entity | EEGH | Tax Receivable
Related Party Transaction [Line Items]
Due from affiliates		31,000,000					20,000,000
BHE GT&S, LLC | Affiliated Entity | EEGH | Intercompany Revolving Credit Agreement With BHE GT&S
Related Party Transaction [Line Items]
Maximum borrowing capacity		400,000,000
BHE GT&S, LLC | Affiliated Entity | EEGH | Intercompany Revolving Credit Agreement With BHE GT&S | Line of Credit
Related Party Transaction [Line Items]
Long-term line of credit		0					9,000,000
EEGH | Affiliated Entity | BHE GT&S, LLC | BHE GT&S and Eastern Energy Intercompany Revolving Credit Agreement
Related Party Transaction [Line Items]
Long-term line of credit		28,000,000					124,000,000
Face amount		400,000,000				$ 200,000,000
MidAmerican Energy Company | Affiliated Entity | EEGH | Shared Benefit Plan
Related Party Transaction [Line Items]
Due to related parties, noncurrent		$ 110,000,000					$ 115,000,000