Midamerican Funding 10-Q 9 Nov 20 2020 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2020	Nov. 05, 2020
Document Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3
Entity Registrant Name	BERKSHIRE HATHAWAY ENERGY CO
Entity Central Index Key	0001081316
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		76,368,874
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
PacifiCorp [Member]
Document Information [Line Items]
Entity Registrant Name	PACIFICORP /OR/
Entity Central Index Key	0000075594
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		357,060,915
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
MidAmerican Funding, LLC and Subsidiaries [Domain]
Document Information [Line Items]
Entity Registrant Name	MIDAMERICAN FUNDING, LLC
Entity Central Index Key	0001098296
Entity Filer Category	Non-accelerated Filer
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
MidAmerican Energy Company [Member]
Document Information [Line Items]
Entity Registrant Name	MIDAMERICAN ENERGY COMPANY
Entity Central Index Key	0000928576
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		70,980,203
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Nevada Power Company [Member]
Document Information [Line Items]
Entity Registrant Name	Nevada Power Company
Entity Central Index Key	0000071180
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		1,000
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Sierra Pacific Power Company [Member]
Document Information [Line Items]
Entity Registrant Name	Sierra Pacific Power Company
Entity Central Index Key	0000090144
Entity Filer Category	Non-accelerated Filer
Entity Common Stock, Shares Outstanding		1,000
Entity Emerging Growth Company	false
Entity Small Business	false
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,769	$ 1,040
Restricted cash and cash equivalents	309	212
Trade receivables, net	2,120	1,910
Inventories	1,034	873
Mortgage loans held-for-sale	2,178	1,039
Assets Held-in-trust, Current	472	211
Other current assets	915	628
Total current assets	8,797	5,913
Property, plant and equipment, net	75,252	73,305
Goodwill	9,667	9,722
Regulatory assets	2,728	2,766
Investments and restricted cash and cash equivalents and investments	10,603	6,255
Other assets	2,139	2,090
Total assets	109,186	100,051
Current liabilities:
Accounts payable	1,881	1,839
Accrued interest	579	493
Accrued property, income and other taxes	710	537
Accrued employee expenses	509	285
Short-term debt	2,400	3,214
Current portion of long-term debt	1,783	2,539
Other current liabilities	1,758	1,350
Total current liabilities	9,620	10,257
BHE senior debt	11,012	8,231
BHE junior subordinated debentures	100	100
Subsidiary debt	30,259	28,483
Regulatory liabilities	6,636	7,100
Deferred Income Tax Liabilities, Net	10,839	9,653
Other long-term liabilities	3,851	3,649
Total liabilities	72,317	67,473
Commitments and contingencies
BHE shareholders' equity:
Common stock - 115 shares authorized, no par value, 76 and 77 shares issued and outstanding	0	0
Additional paid-in capital	6,377	6,389
Long-term income tax receivable	(530)	(530)
Retained earnings	32,804	28,296
Accumulated other comprehensive loss, net	(1,883)	(1,706)
Total BHE shareholders' equity	36,768	32,449
Noncontrolling interests	101	129
Total equity	36,869	32,578
Total liabilities and equity	$ 109,186	$ 100,051

Consolidated Balance Sheets - P

Consolidated Balance Sheets - PacifiCorp - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,769	$ 1,040
Inventories	1,034	873
Other current assets	915	628
Total current assets	8,797	5,913
Regulatory assets	2,728	2,766
Other assets	2,139	2,090
Total assets	109,186	100,051
Current liabilities:
Accounts payable	1,881	1,839
Accrued interest	579	493
Accrued property, income and other taxes	710	537
Accrued employee expenses	509	285
Short-term debt	2,400	3,214
Current portion of long-term debt	1,783	2,539
Other current liabilities	1,758	1,350
Total current liabilities	9,620	10,257
Regulatory liabilities	6,636	7,100
Deferred Income Tax Liabilities, Net	10,839	9,653
Other long-term liabilities	3,851	3,649
Total liabilities	72,317	67,473
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,389
Retained earnings	32,804	28,296
Accumulated other comprehensive loss, net	(1,883)	(1,706)
Total BHE shareholders' equity	36,768	32,449
Total liabilities and equity	109,186	100,051
PacifiCorp [Member]
Current assets:
Cash and cash equivalents	590	30
Trade receivables, net	730	644
Other Receivables, Net, Current	38	70
Inventories	491	394
Other current assets	233	152
Total current assets	2,082	1,290
Property, plant and equipment, net	22,042	20,973
Regulatory assets	952	1,060
Other assets	451	374
Total assets	25,527	23,697
Current liabilities:
Accounts payable	764	679
Accrued interest	114	116
Accrued property, income and other taxes	180	96
Accrued employee expenses	124	75
Short-term debt	0	130
Current portion of long-term debt	438	38
Other current liabilities	235	226
Total current liabilities	1,855	1,360
Long-term debt	8,211	7,620
Regulatory liabilities	2,847	2,913
Deferred Income Tax Liabilities, Net	2,583	2,563
Other long-term liabilities	965	804
Total liabilities	16,461	15,260
Commitments and contingencies
Equity:
Preferred Stock, Value, Issued	2	2
Common stock	0	0
Additional paid-in capital	4,479	4,479
Retained earnings	4,600	3,972
Accumulated other comprehensive loss, net	(15)	(16)
Total BHE shareholders' equity	9,066	8,437
Total liabilities and equity	$ 25,527	$ 23,697

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - PacifiCorp - $ / shares shares in Millions	Sep. 30, 2020	Dec. 31, 2019
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	0	0
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
PacifiCorp [Member]
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	750	750
Common stock, shares issued	357	357
Common stock, shares outstanding	357	357

Balance Sheets - MEC

Balance Sheets - MEC - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,769	$ 1,040
Inventories	1,034	873
Other current assets	915	628
Total current assets	8,797	5,913
Regulatory assets	2,728	2,766
Investments and restricted cash and cash equivalents and investments	10,603	6,255
Other assets	2,139	2,090
Total assets	109,186	100,051
Current liabilities:
Accounts payable	1,881	1,839
Accrued interest	579	493
Accrued property, income and other taxes	710	537
Short-term debt	2,400	3,214
Current portion of long-term debt	1,783	2,539
Other current liabilities	1,758	1,350
Total current liabilities	9,620	10,257
Regulatory liabilities	6,636	7,100
Deferred Income Tax Liabilities, Net	10,839	9,653
Other long-term liabilities	3,851	3,649
Total liabilities	72,317	67,473
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,389
Retained earnings	32,804	28,296
Accumulated other comprehensive loss, net	(1,883)	(1,706)
Total BHE shareholders' equity	36,768	32,449
Total liabilities and equity	109,186	100,051
MidAmerican Energy Company [Member]
Current assets:
Cash and cash equivalents	188	287
Trade receivables, net	303	291
Inventories	266	226
Other current assets	70	90
Total current assets	827	894
Property, plant and equipment, net	19,049	18,375
Regulatory assets	333	289
Investments and restricted cash and cash equivalents and investments	849	818
Other assets	210	188
Total assets	21,268	20,564
Current liabilities:
Accounts payable	463	519
Accrued interest	86	78
Accrued property, income and other taxes	215	225
Other current liabilities	170	219
Total current liabilities	934	1,041
Long-term debt	7,210	7,208
Regulatory liabilities	1,083	1,406
Deferred Income Tax Liabilities, Net	2,997	2,626
Asset retirement obligations	768	704
Other long-term liabilities	336	339
Total liabilities	13,328	13,324
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	561	561
Retained earnings	7,379	6,679
Total BHE shareholders' equity	7,940	7,240
Total liabilities and equity	$ 21,268	$ 20,564

Consolidated Balance Sheets Bal

Consolidated Balance Sheets Balance Sheets (Parenthetical) - MEC - $ / shares shares in Millions	Sep. 30, 2020	Dec. 31, 2019
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	0	0
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
MidAmerican Energy Company [Member]
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	350	350
Common stock, shares issued	71	71
Common stock, shares outstanding	71	71

Consolidated Balance Sheets - M

Consolidated Balance Sheets - MidAmerican Funding - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 1,769	$ 1,040
Inventories		1,034	873
Other current assets		915	628
Total current assets		8,797	5,913
Property, plant and equipment, net		75,252	73,305
Goodwill		9,667	9,722
Regulatory assets		2,728	2,766
Investments and restricted cash and cash equivalents and investments		10,603	6,255
Other assets		2,139	2,090
Total assets		109,186	100,051
Current liabilities:
Accounts payable		1,881	1,839
Accrued interest		579	493
Accrued property, income and other taxes		710	537
Short-term debt		2,400	3,214
Current portion of long-term debt		1,783	2,539
Other current liabilities		1,758	1,350
Total current liabilities		9,620	10,257
Regulatory liabilities		6,636	7,100
Deferred Income Tax Liabilities, Net		10,839	9,653
Other long-term liabilities		3,851	3,649
Total liabilities		72,317	67,473
Commitments and contingencies
Equity:
Additional paid-in capital		6,377	6,389
Retained earnings		32,804	28,296
Accumulated other comprehensive loss, net		(1,883)	(1,706)
Total BHE shareholders' equity		36,768	32,449
Total liabilities and equity		109,186	100,051
MidAmerican Funding, LLC and Subsidiaries [Domain]
Current assets:
Cash and cash equivalents		193	288
Trade receivables, net		303	291
Inventories		266	226
Other current assets		73	91
Total current assets		835	896
Property, plant and equipment, net		19,049	18,377
Goodwill		1,270	1,270
Regulatory assets		333	289
Investments and restricted cash and cash equivalents and investments		851	820
Other assets		210	188
Total assets	[1]	22,548	21,840
Current liabilities:
Accounts payable		463	520
Accrued interest		87	84
Accrued property, income and other taxes		215	226
Notes Payable, Related Parties, Current		184	171
Other current liabilities		171	219
Total current liabilities		1,120	1,220
Long-term debt		7,450	7,448
Regulatory liabilities		1,083	1,406
Deferred Income Tax Liabilities, Net		2,995	2,621
Asset retirement obligations		768	704
Other long-term liabilities		336	340
Total liabilities		13,752	13,739
Commitments and contingencies
Equity:
Additional paid-in capital		1,679	1,679
Retained earnings		7,117	6,422
Total BHE shareholders' equity		8,796	8,101
Total liabilities and equity		$ 22,548	$ 21,840
[1]	(1)Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

Consolidated Balance Sheets - N

Consolidated Balance Sheets - NPC - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,769	$ 1,040
Inventories	1,034	873
Other current assets	915	628
Total current assets	8,797	5,913
Regulatory assets	2,728	2,766
Other assets	2,139	2,090
Total assets	109,186	100,051
Current liabilities:
Accounts payable	1,881	1,839
Accrued interest	579	493
Accrued property, income and other taxes	710	537
Current portion of long-term debt	1,783	2,539
Other current liabilities	1,758	1,350
Total current liabilities	9,620	10,257
Regulatory liabilities	6,636	7,100
Deferred Income Tax Liabilities, Net	10,839	9,653
Other long-term liabilities	3,851	3,649
Total liabilities	72,317	67,473
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,389
Retained earnings	32,804	28,296
Accumulated other comprehensive loss, net	(1,883)	(1,706)
Total BHE shareholders' equity	36,768	32,449
Total liabilities and equity	109,186	100,051
Nevada Power Company [Member]
Current assets:
Cash and cash equivalents	152	15
Trade receivables, net	386	215
Inventories	66	62
Prepaid Expense, Current	54	42
Other current assets	70	30
Total current assets	728	364
Property, plant and equipment, net	6,643	6,538
Finance Lease, Right-of-Use Asset, after Accumulated Amortization	354	441
Regulatory assets	782	800
Other assets	59	59
Total assets	8,566	8,202
Current liabilities:
Accounts payable	209	194
Accrued interest	38	30
Accrued property, income and other taxes	76	25
Current portion of long-term debt	0	575
Regulatory liabilities	172	93
Customer deposits	50	62
Other current liabilities	84	58
Total current liabilities	629	1,037
Long-term debt	2,496	1,776
Finance Lease, Liability, Noncurrent	338	430
Regulatory liabilities	1,129	1,163
Deferred Income Tax Liabilities, Net	712	714
Other long-term liabilities	276	285
Total liabilities	5,580	5,405
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	2,308	2,308
Retained earnings	682	493
Accumulated other comprehensive loss, net	(4)	(4)
Total BHE shareholders' equity	2,986	2,797
Total liabilities and equity	$ 8,566	$ 8,202

Consolidated Balance Sheets (_2

Consolidated Balance Sheets (Parenthetical) - NPC - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Common stock, shares authorized	0	0
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
Nevada Power Company [Member]
Common Stock, Par or Stated Value Per Share	$ 1	$ 1
Common stock, shares authorized	1,000	1,000
Common stock, shares issued	1,000	1,000
Common stock, shares outstanding	1,000	1,000

Consolidated Balance Sheets - S

Consolidated Balance Sheets - SPPC - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 1,769	$ 1,040
Inventories	1,034	873
Other current assets	915	628
Total current assets	8,797	5,913
Regulatory assets	2,728	2,766
Other assets	2,139	2,090
Total assets	109,186	100,051
Current liabilities:
Accounts payable	1,881	1,839
Accrued interest	579	493
Accrued property, income and other taxes	710	537
Other current liabilities	1,758	1,350
Total current liabilities	9,620	10,257
Regulatory liabilities	6,636	7,100
Deferred Income Tax Liabilities, Net	10,839	9,653
Other long-term liabilities	3,851	3,649
Total liabilities	72,317	67,473
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	6,377	6,389
Retained earnings	32,804	28,296
Accumulated other comprehensive loss, net	(1,883)	(1,706)
Total BHE shareholders' equity	36,768	32,449
Total liabilities and equity	109,186	100,051
Sierra Pacific Power Company [Member]
Current assets:
Cash and cash equivalents	22	27
Trade receivables, net	102	109
Income Taxes Receivable, Current	2	14
Inventories	75	57
Regulatory assets	50	12
Other current assets	29	20
Total current assets	280	239
Property, plant and equipment, net	3,143	3,075
Regulatory assets	287	283
Other assets	159	74
Total assets	3,869	3,671
Current liabilities:
Accounts payable	133	103
Accrued interest	11	14
Accrued property, income and other taxes	12	12
Regulatory liabilities	44	49
Customer deposits	16	21
Other current liabilities	36	21
Total current liabilities	252	220
Long-term debt, carrying value	1,164	1,135
Finance Lease, Liability, Noncurrent	123	40
Regulatory liabilities	460	489
Deferred Income Tax Liabilities, Net	362	347
Other long-term liabilities	118	120
Total liabilities	2,479	2,351
Commitments and contingencies
Equity:
Common stock	0	0
Additional paid-in capital	1,111	1,111
Retained earnings	280	210
Accumulated other comprehensive loss, net	(1)	(1)
Total BHE shareholders' equity	1,390	1,320
Total liabilities and equity	$ 3,869	$ 3,671

Consolidated Balance Sheets (_3

Consolidated Balance Sheets (Parenthetical) - SPPC - $ / shares	Sep. 30, 2020	Dec. 31, 2019
Common stock, shares authorized	0	0
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0
Sierra Pacific Power Company [Member]
Common Stock, Par or Stated Value Per Share	$ 3.75	$ 3.75
Common stock, shares authorized	20,000,000	20,000,000
Common stock, shares issued	1,000	1,000
Common stock, shares outstanding	1,000	1,000

Consolidated Balance Sheets (_4

Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Millions	Sep. 30, 2020	Dec. 31, 2019
BHE shareholders' equity:
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	0	0
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0

Consolidated Statements of Oper

Consolidated Statements of Operations - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating revenue:
Total operating revenue	$ 6,193	$ 5,644	$ 15,332	$ 15,148
Cost of sales	1,169	1,230	3,095	3,471
Energy:
Operations and maintenance	1,033	845	2,564	2,469
Depreciation and amortization	789	795	2,323	2,243
Property and other taxes	152	130	456	427
Real estate	1,503	1,194	3,492	3,210
Total operating expenses	4,646	4,194	11,930	11,820
Operating income	1,547	1,450	3,402	3,328
Other income (expense):
Interest Costs Incurred	(504)	(475)	(1,490)	(1,428)
Capitalized interest	24	23	60	56
Allowance for equity funds	50	56	122	126
Interest and dividend income	17	25	57	91
Gains (losses) on marketable securities, net	1,797	(234)	2,407	(296)
Other, net	36	2	61	67
Total other income (expense)	1,420	(603)	1,217	(1,384)
Income before income tax expense (benefit) and equity loss	2,967	847	4,619	1,944
Income tax expense (benefit)	80	(302)	(111)	(526)
Equity loss	(41)	(4)	(91)	(12)
Net income	2,846	1,145	4,639	2,458
Net income attributable to noncontrolling interests	4	8	11	15
Net income attributable to BHE shareholders	2,842	1,137	4,628	2,443
Electricity and natural gas [Member]
Operating revenue:
Total operating revenue	4,451	4,337	11,504	11,729
Residential real estate brokerage and mortgage businesses [Member]
Operating revenue:
Total operating revenue	$ 1,742	$ 1,307	$ 3,828	$ 3,419

Consolidated Statements of Op_2

Consolidated Statements of Operations - PacifiCorp - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating revenue	$ 6,193	$ 5,644	$ 15,332	$ 15,148
Cost of sales	1,169	1,230	3,095	3,471
Operating expenses:
Operating income	1,547	1,450	3,402	3,328
Other income (expense):
Interest expense	(504)	(475)	(1,490)	(1,428)
Allowance for borrowed funds	24	23	60	56
Allowance for equity funds	50	56	122	126
Interest and dividend income	17	25	57	91
Other, net	36	2	61	67
Total other income (expense)	1,420	(603)	1,217	(1,384)
Income before income tax expense and equity income	2,967	847	4,619	1,944
Income tax expense (benefit)	80	(302)	(111)	(526)
Net income attributable to BHE shareholders	2,842	1,137	4,628	2,443
PacifiCorp [Member]
Operating revenue	1,479	1,367	3,829	3,793
Cost of sales	499	464	1,299	1,313
Operating expenses:
Operations and maintenance	332	252	829	763
Depreciation and amortization	234	272	696	686
Property and other taxes	53	46	154	146
Utilities Operating Expense	1,118	1,034	2,978	2,908
Operating income	361	333	851	885
Other income (expense):
Interest expense	(107)	(101)	(319)	(299)
Allowance for borrowed funds	14	11	36	26
Allowance for equity funds	29	21	73	51
Interest and dividend income	2	5	8	17
Other, net	5	6	9	22
Total other income (expense)	(57)	(58)	(193)	(183)
Income before income tax expense and equity income	304	275	658	702
Income tax expense (benefit)	18	(3)	30	77
Net income attributable to BHE shareholders	$ 286	$ 278	$ 628	$ 625

Statements of Operations - MEC

Statements of Operations - MEC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating revenue:
Total operating revenue	$ 6,193	$ 5,644	$ 15,332	$ 15,148
Cost of sales	1,169	1,230	3,095	3,471
Operating expenses:
Total operating expenses	4,646	4,194	11,930	11,820
Operating income	1,547	1,450	3,402	3,328
Other income (expense):
Interest expense	(504)	(475)	(1,490)	(1,428)
Allowance for borrowed funds	24	23	60	56
Allowance for equity funds	50	56	122	126
Other, net	36	2	61	67
Total other income (expense)	1,420	(603)	1,217	(1,384)
Income before income tax (benefit) expense and equity income	2,967	847	4,619	1,944
Income tax expense (benefit)	80	(302)	(111)	(526)
Net Income (Loss) Attributable to Parent	2,842	1,137	4,628	2,443
MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	812	796	2,106	2,297
Operating expenses:
Operations and maintenance	212	189	559	600
Depreciation and amortization	180	184	531	540
Property and other taxes	33	31	102	94
Total operating expenses	580	562	1,668	1,854
Operating income	232	234	438	443
Other income (expense):
Interest expense	(74)	(68)	(224)	(207)
Allowance for borrowed funds	5	7	12	20
Allowance for equity funds	16	27	33	59
Other, net	14	4	30	34
Total other income (expense)	(39)	(30)	(149)	(94)
Income before income tax (benefit) expense and equity income	193	204	289	349
Income tax expense (benefit)	(147)	(78)	(411)	(282)
Net Income (Loss) Attributable to Parent	340	282	700	631
Regulated electric | MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	728	712	1,717	1,792
Cost of sales	115	113	266	318
Regulated natural gas and other | MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	84	84	389	505
Cost of sales	$ 40	$ 45	$ 210	$ 302

Consolidated Statements of Op_3

Consolidated Statements of Operations - MidAmerican Funding - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating revenue:
Total operating revenue	$ 6,193	$ 5,644	$ 15,332	$ 15,148
Cost of sales	1,169	1,230	3,095	3,471
Operating expenses:
Total operating expenses	4,646	4,194	11,930	11,820
Operating income	1,547	1,450	3,402	3,328
Other income (expense):
Interest expense	(504)	(475)	(1,490)	(1,428)
Allowance for borrowed funds	24	23	60	56
Allowance for equity funds	50	56	122	126
Other, net	36	2	61	67
Total other income (expense)	1,420	(603)	1,217	(1,384)
Income before income tax (benefit) expense and equity income	2,967	847	4,619	1,944
Income tax expense (benefit)	80	(302)	(111)	(526)
Net Income (Loss) Attributable to Parent	2,842	1,137	4,628	2,443
MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	812	797	2,114	2,299
Operating expenses:
Operations and maintenance	212	190	560	602
Depreciation and amortization	180	184	531	540
Property and other taxes	33	31	102	94
Total operating expenses	580	563	1,670	1,855
Operating income	232	234	444	444
Other income (expense):
Interest expense	(79)	(74)	(238)	(223)
Allowance for borrowed funds	5	7	12	20
Allowance for equity funds	16	27	33	59
Other, net	15	5	30	36
Total other income (expense)	(43)	(35)	(163)	(108)
Income before income tax (benefit) expense and equity income	189	199	281	336
Income tax expense (benefit)	(148)	(80)	(414)	(286)
Net Income (Loss) Attributable to Parent	337	279	695	622
Regulated electric | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	728	712	1,717	1,792
Cost of sales	115	113	266	318
Regulated natural gas and other | MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	84	85	397	507
Cost of sales	$ 40	$ 45	$ 211	$ 301

Consolidated Statements of Op_4

Consolidated Statements of Operations - NPC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Operating revenue	$ 6,193	$ 5,644	$ 15,332	$ 15,148
Cost of sales	1,169	1,230	3,095	3,471
Total operating expenses	4,646	4,194	11,930	11,820
Operating income	1,547	1,450	3,402	3,328
Interest expense	(504)	(475)	(1,490)	(1,428)
Capitalized interest	24	23	60	56
Allowance for equity funds	50	56	122	126
Other, net	36	2	61	67
Total other income (expense)	1,420	(603)	1,217	(1,384)
Income before income tax expense and equity income	2,967	847	4,619	1,944
Income tax expense (benefit)	80	(302)	(111)	(526)
Net income attributable to BHE shareholders	2,842	1,137	4,628	2,443
Nevada Power Company [Member]
Operating revenue	808	806	1,706	1,728
Cost of sales	287	353	654	752
Operations and maintenance	139	109	295	263
Depreciation and amortization	92	89	273	267
Property and other taxes	12	11	35	34
Total operating expenses	530	562	1,257	1,316
Operating income	278	244	449	412
Interest expense	(40)	(41)	(122)	(129)
Capitalized interest	1	1	3	2
Allowance for equity funds	1	2	5	4
Other, net	6	4	12	17
Total other income (expense)	(32)	(34)	(102)	(106)
Income before income tax expense and equity income	246	210	347	306
Income tax expense (benefit)	52	45	74	66
Net income attributable to BHE shareholders	$ 194	$ 165	$ 273	$ 240

Consolidated Statements of Op_5

Consolidated Statements of Operations - SPPC - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Total operating revenue	$ 6,193	$ 5,644	$ 15,332	$ 15,148
Cost of sales	1,169	1,230	3,095	3,471
Total operating expenses	4,646	4,194	11,930	11,820
Operating income	1,547	1,450	3,402	3,328
Interest expense	(504)	(475)	(1,490)	(1,428)
Capitalized interest	24	23	60	56
Allowance for equity funds	50	56	122	126
Other, net	36	2	61	67
Total other income (expense)	1,420	(603)	1,217	(1,384)
Income before income tax expense and equity income	2,967	847	4,619	1,944
Income tax expense (benefit)	80	(302)	(111)	(526)
Net income attributable to BHE shareholders	2,842	1,137	4,628	2,443
Sierra Pacific Power Company [Member]
Total operating revenue	235	248	652	661
Operations and maintenance	40	46	123	130
Depreciation and amortization	36	31	104	94
Property and other taxes	6	5	17	17
Total operating expenses	167	181	521	530
Operating income	68	67	131	131
Interest expense	(14)	(12)	(42)	(36)
Capitalized interest	0	0	1	1
Allowance for equity funds	1	0	3	2
Other, net	3	1	7	4
Total other income (expense)	(10)	(11)	(31)	(29)
Income before income tax expense and equity income	58	56	100	102
Income tax expense (benefit)	6	12	10	22
Net income attributable to BHE shareholders	52	44	90	80
Sierra Pacific Power Company [Member] | Regulated electric
Total operating revenue	220	232	569	586
Cost of sales	81	93	233	254
Sierra Pacific Power Company [Member] | Regulated natural gas
Total operating revenue	15	16	83	75
Cost of sales	$ 4	$ 6	$ 44	$ 35

Consolidated Statements of Comp

Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 2,846	$ 1,145	$ 4,639	$ 2,458
Other comprehensive income (loss), net of tax:
Unrecognized amounts on retirement benefits, net of tax	6	26	(38)	40
Foreign currency translation adjustment	244	(172)	(195)	(66)
Unrealized losses on cash flow hedges, net of tax	4	7	(20)	(28)
Total other comprehensive (loss) income, net of tax	242	(191)	(177)	(134)
Comprehensive income	3,088	954	4,462	2,324
Comprehensive income attributable to noncontrolling interests	4	8	11	15
Comprehensive income attributable to BHE shareholders	$ 3,084	$ 946	$ 4,451	$ 2,309

Consolidated Statements of Co_2

Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Consolidated Statements of Comprehensive Income Parenthetical [Abstract]
Unrecognized amounts on retirement benefits, tax	$ (3)	$ (4)	$ 10	$ (6)
Unrealized (losses) gains on cash flow hedges, tax	$ 2	$ 3	$ (5)	$ (8)

Consolidated Statements of Chan

Consolidated Statements of Changes in Equity - USD ($) shares in Millions, $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Long-term income tax receivable [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Noncontrolling Interest [Member]
Balance (shares) at Dec. 31, 2018		77
Balance at Dec. 31, 2018	$ 29,723	$ 0	$ 6,371	$ (457)	$ 25,624	$ (1,945)	$ 130
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	2,457	0	0		2,443	0	14
Other comprehensive income (loss)	(134)	0	0		0	(134)	0
Common stock purchases	(293)	0	(16)		(277)	0	0
Distributions	(16)	0	0		0	0	(16)
Other equity transactions	3	$ 0	0		(1)	0	4
Balance (shares) at Sep. 30, 2019		77
Balance at Sep. 30, 2019	31,740	$ 0	6,355	(457)	27,789	(2,079)	132
Balance (shares) at Jun. 30, 2019		77
Balance at Jun. 30, 2019	30,787	$ 0	6,355	(457)	26,651	(1,888)	126
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	1,144	0	0		1,137	0	7
Other comprehensive income (loss)	(191)	0	0		0	(191)	0
Distributions	(6)	0	0		0	0	(6)
Other equity transactions	6	$ 0	0		1	0	5
Balance (shares) at Sep. 30, 2019		77
Balance at Sep. 30, 2019	$ 31,740	$ 0	6,355	(457)	27,789	(2,079)	132
Balance (shares) at Dec. 31, 2019	0	77
Balance at Dec. 31, 2019	$ 32,578	$ 0	6,389	(530)	28,296	(1,706)	129
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	4,638	0	0		4,628	0	10
Other comprehensive income (loss)	(177)	$ 0	0		0	(177)	0
Common stock purchases, shares		(1)
Common stock purchases	(126)	$ 0	(6)		(120)	0	0
Distributions	(11)	0	0		0	0	(11)
Noncontrolling Interest, Decrease from Redemptions or Purchase of Interests	(33)	0	(5)	0	0	0	(28)
Other equity transactions	$ 0	$ 0	(1)		0	0	1
Balance (shares) at Sep. 30, 2020	0	76
Balance at Sep. 30, 2020	$ 36,869	$ 0	6,377	(530)	32,804	(1,883)	101
Balance (shares) at Jun. 30, 2020		76
Balance at Jun. 30, 2020	33,785	$ 0	6,377	(530)	29,962	(2,125)	101
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net Income	2,845	0	0		2,842	0	3
Other comprehensive income (loss)	242	0	0		0	242	0
Distributions	(4)	0	0		0	0	(4)
Other equity transactions	$ 1	$ 0	0		0	0	1
Balance (shares) at Sep. 30, 2020	0	76
Balance at Sep. 30, 2020	$ 36,869	$ 0	$ 6,377	$ (530)	$ 32,804	$ (1,883)	$ 101

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Equity - PacifiCorp - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	PacifiCorp [Member]	PacifiCorp [Member]Preferred Stock [Member]	PacifiCorp [Member]Common Stock [Member]	PacifiCorp [Member]Additional Paid-in Capital [Member]	PacifiCorp [Member]Retained Earnings [Member]	PacifiCorp [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member]
Stockholders' Equity Attributable to Parent at Dec. 31, 2018						$ 7,845	$ 2	$ 0	$ 4,479	$ 3,377	$ (13)
Net Income (Loss) Attributable to Parent	$ 2,443					625				625
Total other comprehensive (loss) income, net of tax	(134)	$ 0	$ 0	$ 0	$ (134)	0				(1)	1
Dividends, Common Stock, Cash						(175)				(175)
Stockholders' Equity Attributable to Parent at Sep. 30, 2019						8,295	2	0	4,479	3,826	(12)
Stockholders' Equity Attributable to Parent at Jun. 30, 2019						8,017	2	0	4,479	3,548	(12)
Net Income (Loss) Attributable to Parent	1,137					278				278
Total other comprehensive (loss) income, net of tax	(191)	0	0	0	(191)
Stockholders' Equity Attributable to Parent at Sep. 30, 2019						8,295	2	0	4,479	3,826	(12)
Stockholders' Equity Attributable to Parent at Dec. 31, 2019	32,449					8,437	2	0	4,479	3,972	(16)
Net Income (Loss) Attributable to Parent	4,628					628				628
Total other comprehensive (loss) income, net of tax	(177)	0	0	0	(177)	1				0	1
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	36,768					9,066	2	0	4,479	4,600	(15)
Stockholders' Equity Attributable to Parent at Jun. 30, 2020						8,780	2	0	4,479	4,314	(15)
Net Income (Loss) Attributable to Parent	2,842					286				286
Total other comprehensive (loss) income, net of tax	242	$ 0	$ 0	$ 0	$ 242
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	$ 36,768					$ 9,066	$ 2	$ 0	$ 4,479	$ 4,600	$ (15)

Statements of Changes in Shareh

Statements of Changes in Shareholder's Equity - MEC - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	MidAmerican Energy Company [Member]	MidAmerican Energy Company [Member]Common Stock [Member]	MidAmerican Energy Company [Member]Additional Paid-in Capital [Member]	MidAmerican Energy Company [Member]Retained Earnings [Member]
Stockholders' Equity Attributable to Parent at Dec. 31, 2018						$ 6,446	$ 0	$ 561	$ 5,885
Net Income (Loss) Attributable to Parent	$ 2,443					631			631
Other comprehensive income (loss)	(134)	$ 0	$ 0	$ 0	$ (134)
Stockholders' Equity, Other	3	0	0	(1)	0
Stockholders' Equity Attributable to Parent at Sep. 30, 2019						7,077	0	561	6,516
Stockholders' Equity Attributable to Parent at Jun. 30, 2019						6,795	0	561	6,234
Net Income (Loss) Attributable to Parent	1,137					282			282
Other comprehensive income (loss)	(191)	0	0	0	(191)
Stockholders' Equity, Other	6	0	0	1	0
Stockholders' Equity Attributable to Parent at Sep. 30, 2019						7,077	0	561	6,516
Stockholders' Equity Attributable to Parent at Dec. 31, 2019	32,449					7,240	0	561	6,679
Net Income (Loss) Attributable to Parent	4,628					700			700
Other comprehensive income (loss)	(177)	0	0	0	(177)
Stockholders' Equity, Other	0	0	(1)	0	0
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	36,768					7,940	0	561	7,379
Stockholders' Equity Attributable to Parent at Jun. 30, 2020						7,600	0	561	7,039
Net Income (Loss) Attributable to Parent	2,842					340			340
Other comprehensive income (loss)	242	0	0	0	242
Stockholders' Equity, Other	1	$ 0	$ 0	$ 0	$ 0
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	$ 36,768					$ 7,940	$ 0	$ 561	$ 7,379

Consolidated Statements of Ch_3

Consolidated Statements of Changes in Member's Equity - MidAmerican Funding - USD ($) $ in Millions	Total	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	MidAmerican Funding, LLC and Subsidiaries [Domain]	MidAmerican Funding, LLC and Subsidiaries [Domain]Additional Paid-in Capital [Member]	MidAmerican Funding, LLC and Subsidiaries [Domain]Retained Earnings [Member]
Stockholders' Equity Attributable to Parent at Dec. 31, 2018					$ 7,329	$ 1,679	$ 5,650
Net Income (Loss) Attributable to Parent	$ 2,443				622		622
Other comprehensive income (loss)	(134)	$ 0	$ 0	$ (134)
Stockholders' Equity, Other	3	0	(1)	0
Stockholders' Equity Attributable to Parent at Sep. 30, 2019					7,951	1,679	6,272
Stockholders' Equity Attributable to Parent at Jun. 30, 2019					7,672	1,679	5,993
Net Income (Loss) Attributable to Parent	1,137				279		279
Other comprehensive income (loss)	(191)	0	0	(191)
Stockholders' Equity, Other	6	0	1	0
Stockholders' Equity Attributable to Parent at Sep. 30, 2019					7,951	1,679	6,272
Stockholders' Equity Attributable to Parent at Dec. 31, 2019	32,449				8,101	1,679	6,422
Net Income (Loss) Attributable to Parent	4,628				695		695
Other comprehensive income (loss)	(177)	0	0	(177)
Stockholders' Equity, Other	0	(1)	0	0
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	36,768				8,796	1,679	7,117
Stockholders' Equity Attributable to Parent at Jun. 30, 2020					8,459	1,679	6,780
Net Income (Loss) Attributable to Parent	2,842				337		337
Other comprehensive income (loss)	242	0	0	242
Stockholders' Equity, Other	1	$ 0	$ 0	$ 0
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	$ 36,768				$ 8,796	$ 1,679	$ 7,117

Consolidated Statements of Ch_4

Consolidated Statements of Changes in Equity - NPC - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive (Loss) Income, Net [Member]	Nevada Power Company [Member]	Nevada Power Company [Member]Common Stock [Member]	Nevada Power Company [Member]Additional Paid-in Capital [Member]	Nevada Power Company [Member]Retained Earnings [Member]	Nevada Power Company [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member]
Balance (shares) at Dec. 31, 2018		77,000,000					1,000
Stockholders' Equity Attributable to Parent at Dec. 31, 2018						$ 2,904	$ 0	$ 2,308	$ 600	$ (4)
Net Income (Loss) Attributable to Parent	$ 2,443					240			240
Dividends, Common Stock, Cash						(95)			(95)
Balance (shares) at Sep. 30, 2019		77,000,000					1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2019						3,049	$ 0	2,308	745	(4)
Stockholders' Equity, Other	3	$ 0	$ 0	$ (1)	$ 0
Balance (shares) at Jun. 30, 2019		77,000,000					1,000
Stockholders' Equity Attributable to Parent at Jun. 30, 2019						2,884	$ 0	2,308	580	(4)
Net Income (Loss) Attributable to Parent	1,137					165			165
Balance (shares) at Sep. 30, 2019		77,000,000					1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2019						$ 3,049	$ 0	2,308	745	(4)
Stockholders' Equity, Other	$ 6	$ 0	0	1	0
Balance (shares) at Dec. 31, 2019	0	77,000,000				1,000	1,000
Stockholders' Equity Attributable to Parent at Dec. 31, 2019	$ 32,449					$ 2,797	$ 0	2,308	493	(4)
Net Income (Loss) Attributable to Parent	$ 4,628					273			273
Dividends, Common Stock, Cash						$ (85)			(85)
Balance (shares) at Sep. 30, 2020	0	76,000,000				1,000	1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	$ 36,768					$ 2,986	$ 0	2,308	682	(4)
Stockholders' Equity, Other	0	$ 0	(1)	0	0	1			1
Balance (shares) at Jun. 30, 2020		76,000,000					1,000
Stockholders' Equity Attributable to Parent at Jun. 30, 2020						2,792	$ 0	2,308	488	(4)
Net Income (Loss) Attributable to Parent	$ 2,842					$ 194			194
Balance (shares) at Sep. 30, 2020	0	76,000,000				1,000	1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	$ 36,768					$ 2,986	$ 0	$ 2,308	$ 682	$ (4)
Stockholders' Equity, Other	$ 1	$ 0	$ 0	$ 0	$ 0

Consolidated Statements of Ch_5

Consolidated Statements of Changes in Equity - SPPC - USD ($) $ in Millions	Total	Common Stock [Member]	Sierra Pacific Power Company [Member]	Sierra Pacific Power Company [Member]Common Stock [Member]	Sierra Pacific Power Company [Member]Additional Paid-in Capital [Member]	Sierra Pacific Power Company [Member]Retained Earnings [Member]	Sierra Pacific Power Company [Member]Accumulated Other Comprehensive (Loss) Income, Net [Member]
Balance (shares) at Dec. 31, 2018		77,000,000		1,000
Stockholders' Equity Attributable to Parent at Dec. 31, 2018			$ 1,264	$ 0	$ 1,111	$ 153	$ 0
Net Income (Loss) Attributable to Parent	$ 2,443		80			80
Dividends, Common Stock, Cash			(46)	$ 0		(46)	0
Balance (shares) at Sep. 30, 2019		77,000,000		1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2019			1,298	$ 0	1,111	187	0
Balance (shares) at Jun. 30, 2019		77,000,000		1,000
Stockholders' Equity Attributable to Parent at Jun. 30, 2019			1,254	$ 0	1,111	143	0
Net Income (Loss) Attributable to Parent	$ 1,137		44			44
Balance (shares) at Sep. 30, 2019		77,000,000		1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2019			$ 1,298	$ 0	1,111	187	0
Balance (shares) at Dec. 31, 2019	0	77,000,000	1,000	1,000
Stockholders' Equity Attributable to Parent at Dec. 31, 2019	$ 32,449		$ 1,320	$ 0	1,111	210	(1)
Net Income (Loss) Attributable to Parent	$ 4,628		90			90
Dividends, Common Stock, Cash			$ (20)			(20)
Balance (shares) at Sep. 30, 2020	0	76,000,000	1,000	1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	$ 36,768		$ 1,390	$ 0	1,111	280	(1)
Balance (shares) at Jun. 30, 2020		76,000,000		1,000
Stockholders' Equity Attributable to Parent at Jun. 30, 2020			1,338	$ 0	1,111	228	(1)
Net Income (Loss) Attributable to Parent	$ 2,842		$ 52			52
Balance (shares) at Sep. 30, 2020	0	76,000,000	1,000	1,000
Stockholders' Equity Attributable to Parent at Sep. 30, 2020	$ 36,768		$ 1,390	$ 0	$ 1,111	$ 280	$ (1)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Cash flows from operating activities:
Net income	$ 4,639	$ 2,458
Adjustments to reconcile net income to net cash flows from operating activities:
Gains (losses) on marketable securities, net	(2,407)	296
Depreciation and amortization	2,357	2,278
Allowance for equity funds	(122)	(126)
Equity loss, net of distributions	146	43
Changes in regulatory assets and liabilities	(87)	108
Deferred income taxes and amortization of investment tax credits	791	(92)
Other, net	(6)	44
Changes in other operating assets and liabilities, net of effects from acquisitions:
Trade receivables and other assets	(1,668)	(594)
Derivative collateral, net	53	(19)
Pension and other postretirement benefit plans	(69)	(40)
Accrued property, income and other taxes, net	97	195
Accounts payable and other liabilities	796	109
Net cash flows from operating activities	4,520	4,660
Cash flows from investing activities:
Capital expenditures	(4,607)	(4,898)
Acquisitions, net of cash acquired	0	(28)
Purchases of marketable securities	(322)	(242)
Proceeds from sales of marketable securities	308	223
Equity method investments	(2,062)	(1,144)
Other, net	50	54
Net cash flows from investing activities	(6,633)	(6,035)
Cash flows from financing activities:
Proceeds from BHE senior debt	3,231	0
Repayments of Unsecured Debt	(350)	0
Common stock purchases	(126)	(293)
Proceeds from subsidiary debt	2,648	3,463
Repayments of subsidiary debt	(1,558)	(1,821)
Net (repayments of) proceeds from short-term debt	(815)	594
Business acquisition, acquisition of remaining noncontrolling interest	(33)	0
Other, net	(60)	(42)
Net cash flows from financing activities	2,937	1,901
Effect of exchange rate changes	4	(3)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	828	523
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	1,268	883
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 2,096	$ 1,406

Consolidated Statements of Ca_2

Consolidated Statements of Cash Flows - PacifiCorp - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Net Income (Loss) Attributable to Parent	$ 4,628	$ 2,443
Increase (Decrease) in Allowance for Equity Funds Used During Construction	(122)	(126)
Changes in regulatory assets and liabilities	(87)	108
Deferred income taxes and amortization of investment tax credits	791	(92)
Other Noncash Income (Expense)	(6)	44
Trade receivables and other assets	(1,668)	(594)
Derivative collateral, net	53	(19)
Accrued property, income and other taxes, net	97	195
Accounts payable and other liabilities	796	109
Net cash flows from operating activities	4,520	4,660
Capital expenditures	(4,607)	(4,898)
Other, net	50	54
Net cash flows from investing activities	(6,633)	(6,035)
Net (repayments of) proceeds from short-term debt	(815)	594
Other, net	(60)	(42)
Net cash flows from financing activities	2,937	1,901
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	828	523
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	1,268	883
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	2,096	1,406
PacifiCorp [Member]
Net Income (Loss) Attributable to Parent	628	625
Depreciation and amortization	696	686
Increase (Decrease) in Allowance for Equity Funds Used During Construction	(73)	(51)
Changes in regulatory assets and liabilities	(17)	(31)
Deferred income taxes and amortization of investment tax credits	(48)	(78)
Other Noncash Income (Expense)	2	(3)
Trade receivables and other assets	(154)	21
Increase (Decrease) in Inventories	(97)	(4)
Derivative collateral, net	22	5
Accrued property, income and other taxes, net	84	99
Accounts payable and other liabilities	248	(2)
Net cash flows from operating activities	1,291	1,267
Capital expenditures	(1,618)	(1,449)
Other, net	31	9
Net cash flows from investing activities	(1,587)	(1,440)
Proceeds from Issuance of Long-term Debt	987	990
Repayments of BHE senior debt and junior subordinated debentures	0	(350)
Net (repayments of) proceeds from short-term debt	(130)	(30)
Payments of Ordinary Dividends, Common Stock	0	(175)
Other, net	0	(2)
Net cash flows from financing activities	857	433
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	561	260
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	36	92
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 597	$ 352

Statements of Cash Flows - MEC

Statements of Cash Flows - MEC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Net Income (Loss) Attributable to Parent	$ 4,628	$ 2,443
Allowance for equity funds	(122)	(126)
Deferred income taxes and amortization of investment tax credits	791	(92)
Other Noncash Income (Expense)	(6)	44
Trade receivables and other assets	(1,668)	(594)
Derivative collateral, net	53	(19)
Pension and other postretirement benefit plans	(69)	(40)
Accrued property, income and other taxes, net	97	195
Accounts payable and other liabilities	796	109
Net cash flows from operating activities	4,520	4,660
Capital expenditures	(4,607)	(4,898)
Purchases of marketable securities	(322)	(242)
Proceeds from sales of marketable securities	308	223
Other, net	50	54
Net cash flows from investing activities	(6,633)	(6,035)
Net (repayments of) proceeds from short-term debt	(815)	594
Other, net	(60)	(42)
Net cash flows from financing activities	2,937	1,901
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	828	523
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	1,268	883
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	2,096	1,406
MidAmerican Energy Company [Member]
Net Income (Loss) Attributable to Parent	700	631
Depreciation and amortization	531	540
Amortization of Utility Plant to Other Operating Expense	25	25
Allowance for equity funds	(33)	(59)
Deferred income taxes and amortization of investment tax credits	76	31
Other Noncash Income (Expense)	(56)	16
Trade receivables and other assets	(15)	(1)
Increase (Decrease) in Inventories	(40)	3
Pension and other postretirement benefit plans	(17)	(9)
Accrued property, income and other taxes, net	(10)	(28)
Accounts payable and other liabilities	48	62
Net cash flows from operating activities	1,209	1,211
Capital expenditures	(1,341)	(1,909)
Purchases of marketable securities	(251)	(139)
Proceeds from sales of marketable securities	244	126
Other, net	9	19
Net cash flows from investing activities	(1,339)	(1,903)
Proceeds from Issuance of Long-term Debt	0	1,460
Repayments of BHE senior debt and junior subordinated debentures	0	(500)
Net (repayments of) proceeds from short-term debt	0	(240)
Other, net	(1)	0
Net cash flows from financing activities	(1)	720
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(131)	28
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	330	56
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 199	$ 84

Consolidated Statements of Ca_3

Consolidated Statements of Cash Flows - MidAmerican Funding - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Net Income (Loss) Attributable to Parent	$ 4,628	$ 2,443
Allowance for equity funds	(122)	(126)
Deferred income taxes and amortization of investment tax credits	791	(92)
Other Noncash Income (Expense)	(6)	44
Trade receivables and other assets	(1,668)	(594)
Derivative collateral, net	53	(19)
Pension and other postretirement benefit plans	(69)	(40)
Accrued property, income and other taxes, net	97	195
Accounts payable and other liabilities	796	109
Net cash flows from operating activities	4,520	4,660
Capital expenditures	(4,607)	(4,898)
Purchases of marketable securities	(322)	(242)
Proceeds from sales of marketable securities	308	223
Other, net	50	54
Net cash flows from investing activities	(6,633)	(6,035)
Net (repayments of) proceeds from short-term debt	(815)	594
Other, net	(60)	(42)
Net cash flows from financing activities	2,937	1,901
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	828	523
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	1,268	883
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	2,096	1,406
MidAmerican Funding, LLC and Subsidiaries [Domain]
Net Income (Loss) Attributable to Parent	695	622
Depreciation and amortization	531	540
Amortization of Utility Plant to Other Operating Expense	25	25
Allowance for equity funds	(33)	(59)
Deferred income taxes and amortization of investment tax credits	79	30
Other Noncash Income (Expense)	(56)	18
Trade receivables and other assets	(16)	(6)
Increase (Decrease) in Inventories	(40)	3
Pension and other postretirement benefit plans	(17)	(9)
Accrued property, income and other taxes, net	(13)	(28)
Accounts payable and other liabilities	44	58
Net cash flows from operating activities	1,199	1,194
Capital expenditures	(1,341)	(1,909)
Purchases of marketable securities	(251)	(139)
Proceeds from sales of marketable securities	244	126
Other, net	10	19
Net cash flows from investing activities	(1,338)	(1,903)
Proceeds from Issuance of Long-term Debt	0	1,460
Repayments of BHE senior debt and junior subordinated debentures	0	(500)
Increase (Decrease) in Notes Payable, Related Parties, Current	13	17
Net (repayments of) proceeds from short-term debt	0	(240)
Other, net	(1)	0
Net cash flows from financing activities	12	737
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(127)	28
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	331	57
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 204	$ 85

Consolidated Statements of Ca_4

Consolidated Statements of Cash Flows - NPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Net Income (Loss) Attributable to Parent	$ 4,628	$ 2,443
Allowance for equity funds	(122)	(126)
Changes in regulatory assets and liabilities	(87)	108
Deferred income taxes and amortization of investment tax credits	791	(92)
Other Noncash Income (Expense)	(6)	44
Trade receivables and other assets	(1,668)	(594)
Accrued property, income and other taxes, net	97	195
Accounts payable and other liabilities	796	109
Net cash flows from operating activities	4,520	4,660
Capital expenditures	(4,607)	(4,898)
Net cash flows from investing activities	(6,633)	(6,035)
Other, net	(60)	(42)
Net cash flows from financing activities	2,937	1,901
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	828	523
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	1,268	883
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	2,096	1,406
Nevada Power Company [Member]
Net Income (Loss) Attributable to Parent	273	240
Depreciation and amortization	273	267
Allowance for equity funds	(5)	(4)
Changes in regulatory assets and liabilities	38	62
Deferred income taxes and amortization of investment tax credits	(3)	(42)
Deferred Energy Change	(38)	39
Amortization of Deferred Charges	(30)	37
Other Noncash Income (Expense)	5	(4)
Trade receivables and other assets	(112)	(110)
Increase (Decrease) in Inventories	(4)	2
Accrued property, income and other taxes, net	48	53
Accounts payable and other liabilities	(39)	15
Net cash flows from operating activities	406	555
Capital expenditures	(343)	(283)
Proceeds from Sale of Other Assets, Investing Activities	26	2
Net cash flows from investing activities	(317)	(281)
Proceeds from Issuance of Long-term Debt	718	495
Repayments of BHE senior debt and junior subordinated debentures	(575)	(500)
Payments of Ordinary Dividends, Common Stock	(85)	(95)
Other, net	(12)	(11)
Net cash flows from financing activities	46	(111)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	135	163
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	25	121
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 160	$ 284

Consolidated Statements of Ca_5

Consolidated Statements of Cash Flows - SPPC - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Net Income (Loss) Attributable to Parent	$ 4,628	$ 2,443
Allowance for equity funds	(122)	(126)
Changes in regulatory assets and liabilities	(87)	108
Deferred income taxes and amortization of investment tax credits	791	(92)
Other Noncash Income (Expense)	6	(44)
Trade receivables and other assets	(1,668)	(594)
Accrued property, income and other taxes, net	97	195
Accounts payable and other liabilities	796	109
Net cash flows from operating activities	4,520	4,660
Capital expenditures	(4,607)	(4,898)
Payments for (Proceeds from) Other Investing Activities	(50)	(54)
Net cash flows from investing activities	(6,633)	(6,035)
Other, net	(60)	(42)
Net cash flows from financing activities	2,937	1,901
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	828	523
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	1,268	883
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	2,096	1,406
Sierra Pacific Power Company [Member]
Net Income (Loss) Attributable to Parent	90	80
Depreciation and amortization	104	94
Allowance for equity funds	(3)	(2)
Changes in regulatory assets and liabilities	(30)	30
Deferred income taxes and amortization of investment tax credits	3	(5)
Deferred Energy Change	(5)	7
Amortization of Deferred Charges	(6)	(5)
Other Noncash Income (Expense)	0	3
Trade receivables and other assets	(83)	(3)
Increase (Decrease) in Inventories	18	7
Accrued property, income and other taxes, net	8	10
Accounts payable and other liabilities	119	(7)
Net cash flows from operating activities	179	189
Capital expenditures	(192)	(165)
Payments for (Proceeds from) Other Investing Activities	0	(1)
Net cash flows from investing activities	(192)	(164)
Proceeds from Issuance of Long-term Debt	30	125
Repayments of Long-term Debt	0	109
Payments of Ordinary Dividends, Common Stock	20	46
Other, net	(3)	(3)
Net cash flows from financing activities	7	(33)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(6)	(8)
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Start	32	76
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, End of Period	$ 26	$ 68

General

General	9 Months Ended
	Sep. 30, 2020
Segment Reporting Information [Line Items]
General/Organization and Operations	General Berkshire Hathaway Energy Company (" BHE ") is a holding company that owns a highly diversified portfolio of locally managed businesses principally engaged in the energy industry (collectively with its subsidiaries, the "Company") and is a consolidated subsidiary of Berkshire Hathaway Inc. (" Berkshire Hathaway "). The Company's operations are organized as eight business segments: PacifiCorp , MidAmerican Funding, LLC (" MidAmerican Funding ") (which primarily consists of MidAmerican Energy Company (" MidAmerican Energy ")), NV Energy, Inc. (" NV Energy ") (which primarily consists of Nevada Power Company (" Nevada Power ") and Sierra Pacific Power Company (" Sierra Pacific ")), Northern Powergrid Holdings Company (" Northern Powergrid ") (which primarily consists of Northern Powergrid (Northeast) Limited and Northern Powergrid (Yorkshire) plc ), BHE Pipeline Group (which primarily consists of 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. (collectively with 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, two interstate natural gas pipeline companies 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, 2020 and for the three- and nine-month periods ended September 30, 2020 and 2019 . The results of operations for the three- and nine-month periods ended September 30, 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 the Company's Annual Report on Form 10-K for the year ended December 31, 2019 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, 2020 . Coronavirus Disease 2019 ("COVID-19") In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and on worldwide economic conditions. COVID-19 has impacted many of the Company's customers ranging from high unemployment levels, an inability to pay bills and business closures or operating at reduced capacity levels. While COVID-19 has impacted the Company's financial results and operations through September 30, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. These impacts include, but are not limited to, lower operating revenue and higher bad debt expense. The duration and extent of COVID-19 and its future impact on the Company's businesses cannot be reasonably estimated at this time. Accordingly, significant estimates used in the preparation of the Company's unaudited Consolidated Financial Statements, including those associated with evaluations of certain long-lived assets, goodwill and other intangible assets for impairment, expected credit losses on amounts owed to the Company and potential regulatory deferral or recovery of certain costs may be subject to significant adjustments in future periods.
PacifiCorp [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General PacifiCorp, which includes PacifiCorp and its subsidiaries, is a United States regulated electric utility company serving retail customers, including residential, commercial, industrial, irrigation and other customers in portions of Utah, Oregon, Wyoming, Washington, Idaho and California. PacifiCorp owns, or has interests in, a number of thermal, hydroelectric, wind-powered and geothermal generating facilities, as well as electric transmission and distribution assets. PacifiCorp also buys and sells electricity on the wholesale market with other utilities, energy marketing companies, financial institutions and other market participants. PacifiCorp is subject to comprehensive state and federal regulation. PacifiCorp's subsidiaries support its electric utility operations by providing coal mining services. PacifiCorp is an indirect subsidiary of Berkshire Hathaway Energy Company (" BHE "), a holding company based in Des Moines, Iowa that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. (" Berkshire Hathaway "). The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of September 30, 2020 and for the three- and nine-month periods ended September 30, 2020 and 2019 . 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, 2020 and 2019 . The results of operations for the three- and nine-month periods ended September 30, 2020 and 2019 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, 2019 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, 2020 . Coronavirus Disease 2019 ("COVID-19") In March 2020, COVID‑19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and on economic conditions in the United States. COVID-19 has impacted many of PacifiCorp's customers ranging from high unemployment levels, an inability to pay bills and business closures or operating at reduced capacity levels. While COVID‑19 has impacted PacifiCorp's financial results and operations through September 30, 2020, the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. These impacts include, but are not limited to, lower operating revenue from reductions in the consumption of electricity by retail utility customers, particularly in the commercial and industrial customer classes, and higher bad debt expense resulting from a higher than average level of write-offs of uncollectible accounts associated with the suspension of disconnections across PacifiCorp's service territory and suspension of late payment fees in certain jurisdictions implemented to assist customers. While PacifiCorp does not currently expect a significant increase in employer contributions to its retirement plans, continued market volatility caused by COVID-19 may lead to increased contributions in the future. The duration and extent of COVID‑19 and its future impact on PacifiCorp's business cannot be reasonably estimated at this time and the longer-term impacts of COVID-19 and related customer and governmental responses remain uncertain. Accordingly, significant estimates used in the preparation of PacifiCorp's unaudited Consolidated Financial Statements, including those associated with evaluations of certain long-lived assets for impairment, expected credit losses on amounts owed to PacifiCorp and potential regulatory deferral or recovery of certain costs may be subject to significant adjustments in future periods. In March and April 2020, PacifiCorp filed applications requesting authorization to defer costs associated with COVID‑19 with the Utah Public Service Commission ("UPSC"), the Oregon Public Utility Commission ("OPUC"), the Wyoming Public Service Commission ("WPSC"), the Washington Utilities and Transportation Commission and the Idaho Public Utilities Commission ("IPUC"). In April 2020, as ordered by the California Public Utilities Commission, PacifiCorp filed to establish the COVID‑19 Pandemic Protections Memorandum Account. The memorandum account was approved in September 2020, retroactive to March 4, 2020. In April 2020, the WPSC approved PacifiCorp's application to defer costs associated with COVID‑19, subject to a public notice period, and required associated benefits arising from COVID‑19 to be offset against the deferred costs. During the public notice period, one party to the proceeding filed a petition for a rehearing of the matter. In July, September and October 2020, the IPUC, the UPSC and the OPUC, respectively, approved PacifiCorp's applications to defer costs associated with COVID‑19, requiring associated benefits arising from COVID‑19 to be offset against the deferred costs.
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General MidAmerican Energy Company ("MidAmerican Energy") is a public utility with electric and natural gas operations and is the principal subsidiary of MHC Inc. ("MHC"). MHC is a holding company that conducts no business other than the ownership of its subsidiaries. MHC's nonregulated subsidiary is Midwest Capital Group, Inc. MHC is the direct, wholly owned subsidiary of MidAmerican Funding, LLC ("MidAmerican Funding"), which is an Iowa limited liability company with Berkshire Hathaway Energy Company (" BHE ") as its sole member. BHE is a holding company based in Des Moines, Iowa, that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. (" Berkshire Hathaway "). The unaudited Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Financial Statements as of September 30, 2020 , and for the three- and nine-month periods ended September 30, 2020 and 2019 . The Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2020 and 2019 . The results of operations for the three- and nine-month periods ended September 30, 2020 , 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, 2019 , 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, 2020 . Coronavirus Disease 2019 ("COVID-19") In March 2020, COVID-19 was declared a global pandemic, and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and on economic conditions in the United States. COVID-19 has impacted many of MidAmerican Energy's customers ranging from high unemployment levels, an inability to pay bills and business closures or operating at reduced capacity levels. While COVID-19 has impacted MidAmerican Energy's financial results and operations through September 30, 2020 , the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. These impacts include, but are not limited to, lower operating revenue and higher bad debt expense. The duration and extent of COVID-19 and its future impact on MidAmerican Energy's business cannot be reasonably estimated at this time. Accordingly, significant estimates used in the preparation of MidAmerican Energy's unaudited Financial Statements, including those associated with evaluations of certain long-lived assets for impairment, expected credit losses on amounts owed to MidAmerican Energy and potential regulatory recovery of certain costs may be subject to significant adjustments in future periods. In May 2020, the Iowa Utilities Board ("IUB") issued an order authorizing MidAmerican Energy to use a regulatory asset account to track increased costs and other financial impacts, including changes in revenue, associated with COVID-19. At such time as MidAmerican Energy deems appropriate, it may initiate a proceeding with the IUB to seek recovery of such costs and other financial impacts. MidAmerican Energy cannot predict at this time the amount of such financial impacts from COVID-19 or when, or if, it will seek recovery of such costs with the IUB.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Segment Reporting Information [Line Items]
General/Organization and Operations	General MidAmerican Funding, LLC (" MidAmerican Funding ") is an Iowa limited liability company with Berkshire Hathaway Energy Company (" BHE ") as its sole member. BHE is a holding company based in Des Moines, Iowa, that owns subsidiaries principally engaged in energy businesses. BHE is a consolidated subsidiary of Berkshire Hathaway Inc. (" Berkshire Hathaway "). MidAmerican Funding 's direct, wholly owned subsidiary is MHC Inc. ("MHC"), which constitutes substantially all of MidAmerican Funding 's assets, liabilities and business activities except those related to MidAmerican Funding 's long-term debt securities. MHC conducts no business other than the ownership of its subsidiaries. MHC's principal subsidiary is MidAmerican Energy Company ("MidAmerican Energy"), a public utility with electric and natural gas operations, and its direct, wholly owned nonregulated subsidiary is Midwest Capital Group, Inc. The unaudited Consolidated Financial Statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP") for interim financial information and the United States Securities and Exchange Commission's rules and regulations for Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the disclosures required by GAAP for annual financial statements. Management believes the unaudited Consolidated Financial Statements contain all adjustments (consisting only of normal recurring adjustments) considered necessary for the fair presentation of the unaudited Consolidated Financial Statements as of September 30, 2020 , and for the three- and nine-month periods ended September 30, 2020 and 2019 . 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, 2020 and 2019 . The results of operations for the three- and nine-month periods ended September 30, 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 MidAmerican Funding 's Annual Report on Form 10-K for the year ended December 31, 2019 , 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, 2020 . Coronavirus Disease 2019 ("COVID-19") In March 2020, COVID-19 was declared a global pandemic, and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and on economic conditions in the United States. COVID-19 has impacted many of MidAmerican Energy's customers ranging from high unemployment levels, an inability to pay bills and business closures or operating at reduced capacity levels. While COVID-19 has impacted MidAmerican Funding's financial results and operations through September 30, 2020 , the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. These impacts include, but are not limited to, lower operating revenue and higher bad debt expense. The duration and extent of COVID-19 and its future impact on MidAmerican Funding's business cannot be reasonably estimated at this time. Accordingly, significant estimates used in the preparation of MidAmerican Funding's unaudited Consolidated Financial Statements, including those associated with evaluations of certain long-lived assets and goodwill for impairment, expected credit losses on amounts owed to MidAmerican Funding and potential regulatory recovery of certain costs may be subject to significant adjustments in future periods. In May 2020, the Iowa Utilities Board ("IUB") issued an order authorizing MidAmerican Energy to use a regulatory asset account to track increased costs and other financial impacts, including changes in revenue, associated with COVID-19. At such time as MidAmerican Energy deems appropriate, it may initiate a proceeding with the IUB to seek recovery of such costs and other financial impacts. MidAmerican Energy cannot predict at this time the amount of such financial impacts from COVID-19 or when, or if, it will seek recovery of such costs with the IUB.
Nevada Power Company [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General Nevada Power Company, together with its subsidiaries ("Nevada Power"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Sierra Pacific Power Company ("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, 2020 and for the three- and nine-month periods ended September 30, 2020 and 2019 . 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, 2020 and 2019 . The results of operations for the three- and nine-month periods ended September 30, 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 Nevada Power's Annual Report on Form 10-K for the year ended December 31, 2019 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, 2020 . Coronavirus Disease 2019 ("COVID-19") In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and on economic conditions in the United States. COVID-19 has impacted many of Nevada Power's customers ranging from high unemployment levels, an inability to pay bills and business closures or operating at reduced capacity levels. While COVID-19 has impacted Nevada Power's financial results and operations through September 30, 2020 , the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. These impacts include, but are not limited to, lower operating revenue from reductions in the consumption of electricity by retail utility customers, particularly in the commercial, industrial and distribution only service customer classes as the longer term impacts of COVID-19 and related customer and governmental responses remain uncertain, and higher bad debt expense resulting from a higher than average level of write-offs of uncollectible accounts associated with the suspension of disconnections and late payment fees to assist customers. The duration and extent of COVID-19 and its future impact on Nevada Power's business cannot be reasonably estimated at this time. Accordingly, significant estimates used in the preparation of Nevada Power's unaudited Consolidated Financial Statements, including those associated with evaluations of certain long-lived assets for impairment, expected credit losses on amounts owed to Nevada Power and potential regulatory recovery of certain costs may be subject to significant adjustments in future periods. In March 2020, the Public Utilities Commission of Nevada ("PUCN") issued an emergency order for Nevada Power to establish a regulatory asset account related to the costs of maintaining service to customers affected by COVID-19 whose services would have been terminated or disconnected under normally-applicable terms of service.
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
General/Organization and Operations	General Sierra Pacific Power Company ("Sierra Pacific"), is a wholly owned subsidiary of NV Energy, Inc. ("NV Energy"), a holding company that also owns Nevada Power Company ("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 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, 2020 and for the three- and nine-month periods ended September 30, 2020 and 2019 . The Statements of Comprehensive Income have been omitted as net income equals comprehensive income for the three- and nine-month periods ended September 30, 2020 and 2019 . The results of operations for the three- and nine-month periods ended September 30, 2020 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 Sierra Pacific's Annual Report on Form 10-K for the year ended December 31, 2019 describes the most significant accounting policies used in the preparation of the unaudited 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, 2020 . Coronavirus Disease 2019 ("COVID-19") In March 2020, COVID-19 was declared a global pandemic and containment and mitigation measures were recommended worldwide, which has had an unprecedented impact on society in general and on economic conditions in the United States. COVID-19 has impacted many of Sierra Pacific's customers ranging from high unemployment levels, an inability to pay bills and business closures or operating at reduced capacity levels. While COVID-19 has impacted Sierra Pacific's financial results and operations through September 30, 2020 , the impacts have not been material. However, more severe impacts may still occur that could adversely affect future financial results depending on the duration and extent of COVID-19. These impacts include, but are not limited to, lower operating revenue from reductions in the consumption of electricity by retail utility customers, particularly in the commercial, industrial and distribution only service customer classes as the longer term impacts of COVID-19 and related customer and governmental responses remain uncertain, and higher bad debt expense resulting from a higher than average level of write-offs of uncollectible accounts associated with the suspension of disconnections and late payment fees to assist customers. The duration and extent of COVID-19 and its future impact on Sierra Pacific's business cannot be reasonably estimated at this time. Accordingly, significant estimates used in the preparation of Sierra Pacific's unaudited Financial Statements, including those associated with evaluations of certain long-lived assets for impairment, expected credit losses on amounts owed to Sierra Pacific and potential regulatory recovery of certain costs may be subject to significant adjustments in future periods. In March 2020, the Public Utilities Commission of Nevada ("PUCN") issued an emergency order for Sierra Pacific to establish a regulatory asset account related to the costs of maintaining service to customers affected by COVID-19 whose services would have been terminated or disconnected under normally-applicable terms of service.

Business Combination Disclosure

Business Combination Disclosure Business Combination Disclosure (Notes)	9 Months Ended
	Sep. 30, 2020
Business Combinations [Abstract]
Business Combination Disclosure [Text Block]	Business Acquisition 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 $2.7 billion in cash (the "GT&S Cash Consideration"), subject to adjustment for cash and indebtedness as of closing, and assumed approximately $5.3 billion of existing indebtedness for borrowed money for 100% of the equity interests of Eastern Gas Transmission and Storage, Inc. (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.; and a 25% economic interest in Cove Point LNG, LP ("Cove Point") (formerly known as Dominion Energy Cove Point LNG, LP ), consisting of 100% of the general partnership interest and 25% of the total limited partnership interests. BHE became the operator of Cove Point after the GT&S Transaction. The GT&S Transaction received clearance under the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended ("HSR Approval") in October 2020, and approval by the Department of Energy with respect to a change in control of Cove Point and the Federal Communications Commission with respect to the transfer of certain licenses earlier in 2020. On October 5, 2020, DEI and Dominion Questar, as permitted under the terms of the GT&S Purchase Agreement, delivered notice to BHE of their election to terminate the GT&S Transaction with respect to the Questar Pipeline Group and, in connection with the execution of the Q-Pipe Purchase Agreement referenced below, to waive the related termination fee under the GT&S Purchase Agreement. Also on October 5, 2020, BHE entered into a second Purchase and Sale Agreement (the "Q-Pipe Purchase Agreement") with Dominion Questar providing for BHE's purchase of the Questar Pipeline Group from Dominion Questar (the "Q-Pipe Transaction") after receipt of HSR Approval, which is currently anticipated in early 2021, for a cash purchase price of approximately $1.3 billion (the "Q-Pipe Cash Consideration"), subject to adjustment for cash and indebtedness as of the closing, and the assumption of approximately $430 million of existing indebtedness for borrowed money. DEI is also a party to the Q-Pipe Purchase Agreement, as guarantor for certain provisions regarding the Purchase Price Repayment Amount (as defined below) and other matters. Under the Q-Pipe Purchase Agreement, BHE delivered the Q-Pipe Cash Consideration to Dominion Questar on November 2, 2020. If the Q-Pipe Transaction does not close, Dominion Questar has agreed to repay all or (depending on the repayment date) substantially all of the Q-Pipe Cash Consideration (the "Purchase Price Repayment Amount") to BHE on or prior to December 31, 2021. If HSR Approval has not been obtained by June 30, 2021, upon BHE's written request, Dominion Questar will seek alternative buyers for all or a material portion of the Questar Pipeline Group (an "Alternative Transaction"). The Purchase Price Repayment Amount may be paid in cash or in shares of common stock, no par value, of DEI, or a combination thereof, subject to certain limitations as to stock repayments set forth in the Q-Pipe Purchase Agreement; provided any payment on or after December 15, 2021 must be paid in cash only. The assets acquired in the GT&S Transaction include over 5,700 miles of operational natural gas transmission lines, with approximately 13.9 billion cubic feet ("Bcf") per day of transportation capacity and 733 Bcf of operated natural gas storage with 299 Bcf of company-owned working storage capacity, and a liquefied natural gas ("LNG") export, import and storage facility, with LNG storage of 14.6 Bcf. On October 29, 2020, BHE issued $3.75 billion of its 4.00% Perpetual Preferred Stock (the "Perpetual Preferred") to certain subsidiaries of Berkshire Hathaway Inc. in order to fund the GT&S Cash Consideration and the Q-Pipe Cash Consideration. Under the terms of the Perpetual Preferred, BHE is permitted to redeem such Perpetual Preferred at par at any time.

Property, Plant and Equipment,

Property, Plant and Equipment, Net	9 Months Ended
	Sep. 30, 2020
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 2020 2019 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 82,743 $ 81,127 Interstate natural gas pipeline assets 3-80 years 8,281 8,165 91,024 89,292 Accumulated depreciation and amortization (27,401 ) (26,353 ) Regulated assets, net 63,623 62,939 Nonregulated assets: Independent power plants 5-30 years 7,002 6,983 Other assets 3-30 years 1,950 1,834 8,952 8,817 Accumulated depreciation and amortization (2,455 ) (2,183 ) Nonregulated assets, net 6,497 6,634 Net operating assets 70,120 69,573 Construction work-in-progress 5,132 3,732 Property, plant and equipment, net $ 75,252 $ 73,305 Construction work-in-progress includes $5.0 billion as of September 30, 2020 and $3.6 billion as of December 31, 2019 , related to the construction of regulated assets.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Refer to Note 3 of MidAmerican Energy's Notes to Financial Statements. In addition to MidAmerican Energy's property, plant and equipment, net, MidAmerican Funding had as of September 30, 2020 and December 31, 2019 , nonregulated property gross of $‑million and $3 million , respectively, and related accumulated depreciation and amortization of $- million and $1 million , respectively.
MidAmerican Energy Company [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of September 30, December 31, Depreciable Life 2020 2019 Utility plant in service, net: Generation 20-70 years $ 15,917 $ 15,687 Transmission 52-75 years 2,303 2,124 Electric distribution 20-75 years 4,281 4,095 Natural gas distribution 29-75 years 1,873 1,820 Utility plant in service 24,374 23,726 Accumulated depreciation and amortization (6,584 ) (6,139 ) Utility plant in service, net 17,790 17,587 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1 ) (1 ) Nonregulated property, net 6 6 17,796 17,593 Construction work-in-progress 1,253 782 Property, plant and equipment, net $ 19,049 $ 18,375
PacifiCorp [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of September 30, December 31, Depreciable Life 2020 2019 Utility Plant: Generation 14 - 67 years $ 12,475 $ 12,509 Transmission 58 - 75 years 6,687 6,482 Distribution 20 - 70 years 7,522 7,307 Intangible plant (1) 5 - 75 years 1,027 1,016 Other 5 - 60 years 1,483 1,449 Utility plant in service 29,194 28,763 Accumulated depreciation and amortization (9,886 ) (9,803 ) Utility plant in-service, net 19,308 18,960 Other non-regulated, net of accumulated depreciation and amortization 59 years 9 10 Plant, net 19,317 18,970 Construction work-in-progress 2,725 2,003 Property, plant and equipment, net $ 22,042 $ 20,973 (1) Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years. During the nine-month period ended September 30, 2020 , PacifiCorp acquired wind turbines from BHE Wind, LLC, an indirect wholly owned subsidiary of BHE, for $147 million . The wind turbines will be installed as part of newly constructed wind-powered generating facilities that are planned to be placed in service in 2020 and 2021.
Nevada Power Company [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life September 30, December 31, 2020 2019 Utility plant: Generation 30 - 55 years $ 3,612 $ 3,541 Transmission 45 - 70 years 1,455 1,444 Distribution 20 - 65 years 3,738 3,567 General and intangible plant 5 - 65 years 784 741 Utility plant 9,589 9,293 Accumulated depreciation and amortization (3,112 ) (2,951 ) Utility plant, net 6,477 6,342 Other non-regulated, net of accumulated depreciation and amortization 45 years 1 1 Plant, net 6,478 6,343 Construction work-in-progress 165 195 Property, plant and equipment, net $ 6,643 $ 6,538
Sierra Pacific Power Company [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Net	Property, Plant and Equipment, Net Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life September 30, December 31, 2020 2019 Utility plant: Electric generation 25 - 60 years $ 1,129 $ 1,133 Electric transmission 50 - 100 years 911 840 Electric distribution 20 - 100 years 1,724 1,669 Electric general and intangible plant 5 - 70 years 187 178 Natural gas distribution 35 - 70 years 424 417 Natural gas general and intangible plant 5 - 70 years 14 14 Common general 5 - 70 years 344 338 Utility plant 4,733 4,589 Accumulated depreciation and amortization (1,733 ) (1,629 ) Utility plant, net 3,000 2,960 Other non-regulated, net of accumulated depreciation and amortization 70 years 2 2 Plant, net 3,002 2,962 Construction work-in-progress 141 113 Property, plant and equipment, net $ 3,143 $ 3,075

Investments and Restricted Cash

Investments and Restricted Cash and Investments	9 Months Ended
	Sep. 30, 2020
Restricted Cash and Cash Equivalents Items [Line Items]
Investments and Restricted Cash 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, 2020 2019 Investments: BYD Company Limited common stock $ 3,525 $ 1,122 Rabbi trusts 412 410 Other 205 187 Total investments 4,142 1,719 Equity method investments: BHE Renewables tax equity investments 5,000 3,130 Electric Transmission Texas, LLC 597 555 Bridger Coal Company 78 81 Other 168 181 Total equity method investments 5,843 3,947 Restricted cash and cash equivalents and investments: Quad Cities Station nuclear decommissioning trust funds 631 599 Other restricted cash and cash equivalents 327 230 Total restricted cash and cash equivalents and investments 958 829 Total investments and restricted cash and cash equivalents and investments $ 10,943 $ 6,495 Reflected as: Current assets $ 340 $ 240 Noncurrent assets 10,603 6,255 Total investments and restricted cash and cash equivalents and investments $ 10,943 $ 6,495 Investments Gains (losses) 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, 2020 2019 2020 2019 Unrealized gains (losses) recognized on marketable securities still held at the reporting date $ 1,794 $ (236 ) $ 2,403 $ (297 ) Net gains recognized on marketable securities sold during the period 3 2 4 1 Gains (losses) on marketable securities, net $ 1,797 $ (234 ) $ 2,407 $ (296 ) 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, 2020 and December 31, 2019 , consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 1,769 $ 1,040 Restricted cash and cash equivalents 309 212 Investments and restricted cash and cash equivalents and investments 18 16 Total cash and cash equivalents and restricted cash and cash equivalents $ 2,096 $ 1,268

Regulatory Matters

Regulatory Matters	9 Months Ended
	Sep. 30, 2020
Nevada Power Company [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory Matters	Regulatory Matters Deferred Energy Nevada statutes permit regulated utilities to adopt deferred energy accounting procedures. The intent of these procedures is to ease the effect on customers of fluctuations in the cost of purchased natural gas, fuel and electricity and are subject to annual prudency review by the PUCN. Under deferred energy accounting, to the extent actual fuel and purchased power costs exceed fuel and purchased power costs recoverable through current rates that excess is not recorded as a current expense on the Consolidated Statements of Operations but rather is deferred and recorded as a regulatory asset on the Consolidated Balance Sheets. Conversely, a regulatory liability is recorded to the extent fuel and purchased power costs recoverable through current rates exceed actual fuel and purchased power costs. These excess amounts are reflected in quarterly adjustments to rates and recorded as cost of fuel and energy in future time periods. Regulatory Rate Review In June 2020, Nevada Power filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue reduction of $96 million but requested an annual revenue reduction of $120 million . In September 2020, Nevada Power filed an all-party settlement for the electric regulatory rate review. The settlement resolved all but one issue and provided for an annual revenue reduction of $93 million and required Nevada Power to issue a $120 million one-time bill credit, composed primarily of existing regulatory liabilities, to customers beginning in October 2020. The continuation of the earning sharing mechanism was the one issue that was not addressed in the settlement. In October 2020, the PUCN held a hearing on the continuation of the earning sharing mechanism and issued an interim order accepting the settlement and requiring the one-time bill credit be issued to customers. An order that will delineate the remaining parts of the settlement and conclude on the continuation of the earning sharing mechanism is expected by the end of 2020 and new rates will be effective on January 1, 2021. Natural Disaster Protection Plan In May 2019, Senate Bill 329 ("SB 329"), Natural Disaster Mitigation Measures, was signed into law, which requires Nevada Power to submit a natural disaster protection plan to the PUCN. The PUCN adopted natural disaster protection plan regulations in January 2020, that require Nevada Power to file their natural disaster protection plan for approval on or before March 1 of every third year, with the first filing due on March 1, 2020. The regulations also require annual updates to be filed on or before September 1 of the second and third years of the plan. The plan must include procedures, protocols and other certain information as it relates to the efforts of Nevada Power to prevent or respond to a fire or other natural disaster. The expenditures incurred by Nevada Power in developing and implementing the natural disaster protection plan are required to be held in a regulatory asset account, with Nevada Power filing an application for recovery on or before March 1 of each year. Nevada Power submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures in February 2020. In June 2020, a hearing was held and an order was issued in August 2020 that granted the joint application, made minor adjustments to the budget and approved the 2019 costs for recovery starting in October 2020. In October 2020, intervening parties filed petitions for reconsideration. 2017 Tax Reform In February 2018, Nevada Power made a filing with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from 2017 Tax Reform for 2018 and beyond. In March 2018, the PUCN issued an order approving the rate reduction proposed by Nevada Power . The new rates were effective April 1, 2018. The order extended the procedural schedule to allow parties additional discovery relevant to 2017 Tax Reform and a hearing was held in July 2018. In September 2018, the PUCN issued an order directing Nevada Power to record the amortization of any excess protected accumulated deferred income tax arising from the 2017 Tax Reform as a regulatory liability effective January 1, 2018. Subsequently, Nevada Power filed a petition for reconsideration relating to the amortization of protected excess accumulated deferred income tax balances resulting from the 2017 Tax Reform. In November 2018, the PUCN issued an order granting reconsideration and reaffirming the September 2018 order. In December 2018, Nevada Power filed a petition for judicial review. The judicial review occurred in January 2020 and the district court issued an order in March 2020 denying the petition and affirming the PUCN's order. In May 2020, Nevada Power filed a notice of appeal to the Nevada Supreme Court of the district court's order. Nevada Power has agreed to withdraw the notice of appeal as a part of the Nevada Power electric regulatory rate review settlement. A final order on the settlement is expected by the end of 2020.
Sierra Pacific Power Company [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Regulatory Matters	Regulatory Matters Deferred Energy Nevada statutes permit regulated utilities to adopt deferred energy accounting procedures. The intent of these procedures is to ease the effect on customers of fluctuations in the cost of purchased natural gas, fuel and electricity and are subject to annual prudency review by the PUCN. Under deferred energy accounting, to the extent actual fuel and purchased power costs exceed fuel and purchased power costs recoverable through current rates that excess is not recorded as a current expense on the Statements of Operations but rather is deferred and recorded as a regulatory asset on the Balance Sheets. Conversely, a regulatory liability is recorded to the extent fuel and purchased power costs recoverable through current rates exceed actual fuel and purchased power costs. These excess amounts are reflected in quarterly adjustments to rates and recorded as cost of fuel and energy in future time periods. Regulatory Rate Review In June 2019, Sierra Pacific filed an electric regulatory rate review with the PUCN. The filing supported an annual revenue increase of $5 million but requested an annual revenue reduction of $5 million . In September 2019, Sierra Pacific filed an all-party settlement for the electric regulatory rate review. The settlement resolved all cost of capital and revenue requirement issues and provided for an annual revenue reduction of $5 million and required Sierra Pacific to share 50% of regulatory earnings above 9.7% with its customers. The rate design portion of the regulatory rate review was not a part of the settlement and a hearing on rate design was held in November 2019. In December 2019, the PUCN issued an order approving the stipulation but made some adjustments to the methodology for the weather normalization component of historical sales in rates, which resulted in an additional annual revenue reduction of $3 million . The new rates were effective January 1, 2020. In January 2020, Sierra Pacific , filed a petition for rehearing challenging the PUCN's adjustments to the weather normalization methodology. In February 2020, the PUCN issued an order granting the petition for rehearing. In April 2020, the PUCN issued a final order approving the weather normalization methodology that changed the additional annual revenue reduction from $3 million to $2 million with an effective date of January 1, 2020. Customers billed under rates utilizing the initial revenue reduction will be issued credits in the fourth quarter of 2020. Natural Disaster Protection Plan In May 2019, Senate Bill 329 ("SB 329"), Natural Disaster Mitigation Measures, was signed into law, which requires Sierra Pacific to submit a natural disaster protection plan to the PUCN. The PUCN adopted natural disaster protection plan regulations in January 2020, that require Sierra Pacific to file their natural disaster protection plan for approval on or before March 1 of every third year, with the first filing due on March 1, 2020. The regulations also require annual updates to be filed on or before September 1 of the second and third years of the plan. The plan must include procedures, protocols and other certain information as it relates to the efforts of Sierra Pacific to prevent or respond to a fire or other natural disaster. The expenditures incurred by Sierra Pacific in developing and implementing the natural disaster protection plan are required to be held in a regulatory asset account, with Sierra Pacific filing an application for recovery on or before March 1 of each year. Sierra Pacific submitted their initial natural disaster protection plan to the PUCN and filed their first application seeking recovery of 2019 expenditures in February 2020. In June 2020, a hearing was held and an order was issued in August 2020 that granted the joint application, made minor adjustments to the budget and approved the 2019 costs for recovery starting in October 2020. In October 2020, intervening parties filed petitions for reconsideration. 2017 Tax Reform In February 2018, Sierra Pacific made a filing with the PUCN proposing a tax rate reduction rider for the lower annual income tax expense anticipated to result from 2017 Tax Reform for 2018 and beyond. In March 2018, the PUCN issued an order approving the rate reduction proposed by Sierra Pacific . The new rates were effective April 1, 2018. The order extended the procedural schedule to allow parties additional discovery relevant to 2017 Tax Reform and a hearing was held in July 2018. In September 2018, the PUCN issued an order directing Sierra Pacific to record the amortization of any excess protected accumulated deferred income tax arising from the 2017 Tax Reform as a regulatory liability effective January 1, 2018. Subsequently, Sierra Pacific filed a petition for reconsideration relating to the amortization of protected excess accumulated deferred income tax balances resulting from the 2017 Tax Reform. In November 2018, the PUCN issued an order granting reconsideration and reaffirming the September 2018 order. In December 2018, Sierra Pacific filed a petition for judicial review. The judicial review occurred in January 2020 and the district court issued an order in March 2020 denying the petition and affirming the PUCN's order. In May 2020, Sierra Pacific filed a notice of appeal to the Nevada Supreme Court of the district court's order. Sierra Pacific has agreed to withdraw the notice of appeal as a part of the Nevada Power electric regulatory rate review settlement. A final order on the settlement is expected by the end of 2020.

Cash and Cash Equivalents and R

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosures (Notes)	9 Months Ended
	Sep. 30, 2020
Sierra Pacific Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , consist of funds restricted by the PUCN for a certain renewable energy contract. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 22 $ 27 Restricted cash and cash equivalents included in other current assets 4 5 Total cash and cash equivalents and restricted cash and cash equivalents $ 26 $ 32
Nevada Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , consist of funds restricted by the PUCN for a certain renewable energy contract. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 152 $ 15 Restricted cash and cash equivalents included in other current assets 8 10 Total cash and cash equivalents and restricted cash and cash equivalents $ 160 $ 25
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents consist substantially of funds representing escrow accounts for disputes, 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, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 590 $ 30 Restricted cash included in other current assets 4 4 Restricted cash included in other assets 3 2 Total cash and cash equivalents and restricted cash and cash equivalents $ 597 $ 36
MidAmerican Funding, LLC and Subsidiaries [Domain]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , consist substantially of funds restricted for wildlife preservation and, as of December 31, 2019 , the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 193 $ 288 Restricted cash and cash equivalents in other current assets 11 43 Total cash and cash equivalents and restricted cash and cash equivalents $ 204 $ 331
MidAmerican Energy Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash Flow, Supplemental Disclosures [Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , consist substantially of funds restricted for wildlife preservation and, as of December 31, 2019 , the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 188 $ 287 Restricted cash and cash equivalents in other current assets 11 43 Total cash and cash equivalents and restricted cash and cash equivalents $ 199 $ 330

Recent Financing Transactions

Recent Financing Transactions	9 Months Ended
	Sep. 30, 2020
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-Term Debt In October 2020, BHE issued $500 million of its 1.650% Senior Notes due 2031 and $1.5 billion of its 2.850% Senior Notes due 2051. BHE intends to use the net proceeds to repay approximately $1.2 billion of debt at Eastern Energy Gas Holdings, LLC (formerly known as Dominion Energy Gas Holdings, LLC) as it matures over the months following the GT&S Transaction, to fund its commitments under certain tax equity investments in third party sponsored renewable energy projects and for general corporate purposes. In September 2020, AltaLink, L.P. issued C$225 million of its 1.509% Senior Secured Notes due 2030 and intends to use the net proceeds to repay or refinance a portion of its short-term indebtedness and for general corporate purposes. In June 2020, Northern Powergrid (Northeast) plc issued £300 million of its 1.875% Green Bonds due 2062 and intends to use the net proceeds to finance and refinance eligible green projects in certain categories within Northern Powergrid's green project portfolio. In April 2020, PacifiCorp issued $400 million of its 2.70% First Mortgage Bonds due 2030 and $600 million of its 3.30% First Mortgage Bonds due 2051. PacifiCorp intends to use the net proceeds to fund capital expenditures, primarily for renewable resources and associated transmission projects, and for general corporate purposes. In March 2020, BHE issued $1.25 billion of its 4.05% Senior Notes due 2025, $1.1 billion of its 3.70% Senior Notes due 2030 and $900 million of its 4.25% Senior Notes due 2050. BHE used the net proceeds to refinance a portion of the Company's short-term indebtedness and for general corporate purposes. In January 2020, Nevada Power issued $425 million of its 2.40% General and Refunding Mortgage Notes, Series DD, due 2030 and $300 million of its 3.125% General and Refunding Mortgage Notes, Series EE, due 2050. Nevada Power used the net proceeds for the early redemption of $575 million of its 2.75% General and Refunding Mortgage Notes, Series BB, due April 2020 and for general corporate purposes. In January 2020, Pinyon Pines I and II issued $382 million of fifteen year variable-rate term loans due 2034 with a portion of the proceeds used to repay $284 million of existing variable-rate term loans due April 2020. The new term loans amortize semiannually and have variable interest rates based on LIBOR plus a margin that varies during the terms of the agreements. The Company has entered into interest rate swaps that fix the interest rate on 100% of the new term loans. The variable interest rate as of September 30, 2020 was 1.77% while the fixed interest rate as of September 30, 2020 was 3.23% . Credit Facilities In May 2020, MidAmerican Energy terminated its $400 million unsecured credit facility expiring August 2020 and entered into a $600 million unsecured credit facility, which expires May 2021, with an option to extend for up to three months, and has a variable rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread. The facility requires that MidAmerican Energy's ratio of consolidated debt to total capitalization not exceed 0.65 to 1.0 as of the last day of any quarter. In April 2020, AltaLink entered into a C$100 million revolving credit facility expiring April 2021 with a recurring one-year extension option subject to lender consent. The credit facility requires that AltaLink's ratio of consolidated debt to total capitalization not exceed 0.75 to 1.0 as of the last day of each quarter. In April 2020, AltaLink Investments, L.P. entered into a C$200 million revolving term credit facility expiring April 2021 with a recurring one-year extension option subject to lender consent. The credit facility requires that AltaLink Investments, L.P.'s ratio of consolidated debt to total capitalization not exceed 0.80 to 1.0 as of the last day of each quarter.
Nevada Power Company [Member]
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-Term Debt In May 2020, Nevada Power repurchased and entered into a re-offering of the following series of fixed-rate tax-exempt bonds: $40 million of its Coconino County Pollution Control Refunding Revenue Bonds, Series 2017A, due 2032; $13 million of its Coconino County Pollution Control Refunding Revenue Bonds, Series 2017B, due 2039; and $40 million of its Clark County Pollution Control Refunding Revenue Bonds, Series 2017, due 2036. The Series 2017A bond was offered at a fixed rate of 1.875% and the Series 2017B and Series 2017 bonds were offered at a fixed rate of 1.65% . In January 2020, Nevada Power issued $425 million of 2.40% General and Refunding Mortgage Notes, Series DD, due 2030 and $300 million of its 3.125% General and Refunding Mortgage Notes, Series EE, due 2050. Nevada Power used the net proceeds for the early redemption of $575 million of its 2.75% General and Refunding Mortgage Notes, Series BB, due April 2020 and for general corporate purposes.
PacifiCorp [Member]
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-Term Debt In April 2020, PacifiCorp issued $400 million of its 2.70% First Mortgage Bonds due 2030 and $600 million of its 3.30% First Mortgage Bonds due 2051. PacifiCorp intends to use the net proceeds to fund capital expenditures, primarily for renewable resources and associated transmission projects, and for general corporate purposes.
MidAmerican Energy Company [Member]
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Credit Facilities In May 2020, MidAmerican Energy terminated its $400 million unsecured credit facility expiring August 2020 and entered into a $600 million unsecured credit facility, which expires May 2021, with an option to extend for up to three months, and has a variable rate based on the Eurodollar rate or a base rate, at MidAmerican Energy's option, plus a spread. The facility requires that MidAmerican Energy's ratio of consolidated debt, including current maturities, to total capitalization not exceed 0.65 to 1.0 as of the last day of any quarter.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Refer to Note 4 of MidAmerican Energy's Notes to Financial Statements.
Sierra Pacific Power Company [Member]
Debt Instrument [Line Items]
Recent Financing Transactions	Recent Financing Transactions Long-Term Debt In September 2020, Sierra Pacific entered into a re-offering of $30 million of its Washoe County Water Facilities Refunding Revenue Bonds, Series 2016C, due 2036. The series was offered at a fixed rate of 0.625% for a two-year term subject to mandatory purchase by Sierra Pacific in April 2022 at which date the interest rate may be adjusted. In April 2020, Sierra Pacific entered into a re-offering of the following series of tax-exempt bonds that were held in treasury: $30 million of its Washoe County Water Facilities Refunding Revenue Bonds, Series 2016C, due 2036; $59 million of its Washoe County Gas Facilities Refunding Revenue Bonds, Series 2016A, due 2031; and $20 million of its Humboldt County Water Facilities Refunding Revenue Bonds, Series 2016A, due 2029. The interest rate mode of these bonds was changed to a variable rate from an annual fixed rate. Sierra Pacific holds the Washoe and Humboldt County Series 2016A bonds and they could be issued at a future date if deemed necessary.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2020
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	Income Taxes A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (20 ) (43 ) (23 ) (35 ) State income tax, net of federal income tax benefit 3 (3 ) 2 (6 ) Income tax effect of foreign income 1 (1 ) — (2 ) Effects of ratemaking (2 ) (9 ) (2 ) (5 ) Other, net — (1 ) — — Effective income tax rate 3 % (36 )% (2 )% (27 )% Income tax credits relate primarily to production tax credits ("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. Income tax effect on foreign income includes, among other items, a deferred income tax charge of $35 million in 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, 2020 and 2019 , the Company received net cash payments for federal income taxes from Berkshire Hathaway totaling $1.0 billion and $534 million , respectively.
PacifiCorp [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % State income tax, net of federal income tax benefit 3 3 3 3 Federal income tax credits (15 ) (3 ) (12 ) (4 ) Effects of ratemaking (2 ) (3 ) (2 ) (2 ) Amortization of excess deferred income taxes (2 ) (18 ) (6 ) (7 ) Other 1 (1 ) 1 — Effective income tax rate 6 % (1 )% 5 % 11 % Income tax credits relate primarily to production tax credits ("PTCs") earned by PacifiCorp's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. Amortization of excess deferred income taxes for the nine-month periods ended September 30, 2020 and 2019 is primarily attributable to the amortization of $30 million and $49 million , respectively, of Oregon allocated excess deferred income taxes pursuant to the Oregon Renewable Adjustment Clause settlement, whereby a portion of Oregon allocated excess deferred income taxes was used to accelerate depreciation on Oregon's share of certain repowered wind facilities. 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 periods ended September 30, 2020 and 2019 , PacifiCorp made net cash payments for federal and state income tax to BHE totaling $79 million and $128 million , respectively.
Sierra Pacific Power Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Effects of ratemaking (11 ) — (10 ) — Other — — (1 ) 1 Effective income tax rate 10 % 21 % 10 % 22 % Effects of ratemaking is primarily attributable to the recognition of excess deferred income taxes related to the 2017 Tax Cuts and Jobs Act pursuant to an order issued by the PUCN effective January 1, 2020.
MidAmerican Energy Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (55 ) (35 ) (122 ) (75 ) State income tax, net of federal income tax benefit (27 ) (18 ) (29 ) (19 ) Effects of ratemaking (15 ) (7 ) (13 ) (7 ) Other, net — 1 1 (1 ) Effective income tax rate (76 )% (38 )% (142 )% (81 )% 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. Berkshire Hathaway includes BHE and subsidiaries in its United States federal and Iowa state income tax returns. Consistent with established regulatory practice, MidAmerican Energy 's provision for 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 . The timing of MidAmerican Energy'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. BHE made net cash payments for income tax to MidAmerican Energy totaling $500 million and $309 million for the nine-month periods ended September 30, 2020 and 2019 , respectively.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (56 ) (36 ) (126 ) (78 ) State income tax, net of federal income tax benefit (27 ) (18 ) (30 ) (20 ) Effects of ratemaking (16 ) (7 ) (13 ) (7 ) Other, net — — 1 (1 ) Effective income tax rate (78 )% (40 )% (147 )% (85 )% 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. 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. BHE made net cash payments for income tax to MidAmerican Funding totaling $504 million and $313 million for the nine-month period ended September 30, 2020 and 2019 , respectively.

Employee Benefit Plans

Employee Benefit Plans	9 Months Ended
	Sep. 30, 2020
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, 2020 2019 2020 2019 Pension: Service cost $ 4 $ 4 $ 11 $ 12 Interest cost 23 27 69 82 Expected return on plan assets (35 ) (38 ) (105 ) (115 ) Net amortization 8 8 25 24 Net periodic benefit cost $ — $ 1 $ — $ 3 Other postretirement: Service cost $ 1 $ 1 $ 5 $ 6 Interest cost 6 6 16 20 Expected return on plan assets (9 ) (10 ) (25 ) (30 ) Net amortization (1 ) — (5 ) (3 ) Net periodic benefit credit $ (3 ) $ (3 ) $ (9 ) $ (7 ) 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 $1 million , respectively, during 2020 . As of September 30, 2020 , $9 million and $1 million of contributions had been made to the domestic pension and other postretirement benefit plans, respectively. Foreign Operations Net periodic benefit (credit) cost for the United Kingdom pension plan included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Service cost $ 4 $ 3 $ 12 $ 11 Interest cost 10 13 30 39 Expected return on plan assets (26 ) (24 ) (76 ) (74 ) Settlement — 21 — 21 Net amortization 11 9 32 27 Net periodic benefit (credit) cost $ (1 ) $ 22 $ (2 ) $ 24 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 £43 million during 2020 . As of September 30, 2020 , £32 million , or $41 million , of contributions had been made to the United Kingdom pension plan.
PacifiCorp [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Net periodic benefit credit for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Pension: Service cost $ — $ — $ — $ — Interest cost 9 11 27 33 Expected return on plan assets (14 ) (17 ) (42 ) (50 ) Net amortization 4 3 13 9 Net periodic benefit credit $ (1 ) $ (3 ) $ (2 ) $ (8 ) Other postretirement: Service cost $ — $ — $ 1 $ 1 Interest cost 2 3 7 9 Expected return on plan assets (3 ) (6 ) (10 ) (16 ) Net amortization — 1 — 1 Net periodic benefit credit $ (1 ) $ (2 ) $ (2 ) $ (5 ) 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 $- million, respectively, during 2020 . As of September 30, 2020 , $3 million of contributions had been made to the pension plans.
MidAmerican Energy Company [Member]
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 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, 2020 2019 2020 2019 Pension: Service cost $ 2 $ 2 $ 4 $ 5 Interest cost 7 7 19 22 Expected return on plan assets (10 ) (10 ) (30 ) (31 ) Net amortization — — 1 — Net periodic benefit credit $ (1 ) $ (1 ) $ (6 ) $ (4 ) Other postretirement: Service cost $ 1 $ 1 $ 3 $ 4 Interest cost 2 2 5 7 Expected return on plan assets (4 ) (3 ) (10 ) (9 ) Net amortization (1 ) (1 ) (4 ) (3 ) Net periodic benefit credit $ (2 ) $ (1 ) $ (6 ) $ (1 ) Amounts other than the service cost for pension and other postretirement benefit plans are recorded in Other, net in the Statements of Operations. Employer contributions to the pension and other postretirement benefit plans are expected to be $7 million and $1 million , respectively, during 2020 . As of September 30, 2020 , $5 million and $1 million of contributions had been made to the pension and other postretirement benefit plans, respectively.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Refer to Note 6 of MidAmerican Energy's Notes to Financial Statements.
Nevada Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Nevada Power is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Nevada Power. Amounts attributable to Nevada Power were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net. Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of September 30, December 31, 2020 2019 Qualified Pension Plan: Other long-term liabilities $ 18 $ 18 Non-Qualified Pension Plans: Other current liabilities 1 1 Other long-term liabilities 9 9 Other Postretirement Plans: Other long-term liabilities 2 2
Sierra Pacific Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Employee Benefit Plans	Employee Benefit Plans Sierra Pacific is a participant in benefit plans sponsored by NV Energy. The NV Energy Retirement Plan includes a qualified pension plan ("Qualified Pension Plan") and a supplemental executive retirement plan and a restoration plan (collectively, "Non‑Qualified Pension Plans") that provide pension benefits for eligible employees. The NV Energy Comprehensive Welfare Benefit and Cafeteria Plan provides certain postretirement health care and life insurance benefits for eligible retirees ("Other Postretirement Plans") on behalf of Sierra Pacific. Amounts attributable to Sierra Pacific were allocated from NV Energy based upon the current, or in the case of retirees, previous, employment location. Offsetting regulatory assets and liabilities have been recorded related to the amounts not yet recognized as a component of net periodic benefit costs that will be included in regulated rates. Net periodic benefit costs not included in regulated rates are included in accumulated other comprehensive loss, net. Amounts payable to NV Energy are included on the Balance Sheets and consist of the following (in millions): As of September 30, December 31, 2020 2019 Qualified Pension Plan: Other long-term liabilities $ 2 $ 4 Non-Qualified Pension Plans: Other current liabilities 1 1 Other long-term liabilities 7 8 Other Postretirement Plans: Other long-term liabilities 7 7

Risk Management and Hedging Act

Risk Management and Hedging Activities	9 Months Ended
	Sep. 30, 2020
PacifiCorp [Member]
Derivative [Line Items]
Risk Management and Hedging Activities	Risk Management and Hedging Activities PacifiCorp is exposed to the impact of market fluctuations in commodity prices and interest rates. PacifiCorp is principally exposed to electricity, natural gas, coal and fuel oil commodity price risk as it has an obligation to serve retail customer load in its regulated 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, geopolitical factors, 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, 2020 Not designated as hedging contracts (1) : Commodity assets $ 44 $ 11 $ 2 $ — $ 57 Commodity liabilities (2 ) — (31 ) (33 ) (66 ) Total 42 11 (29 ) (33 ) (9 ) Total derivatives 42 11 (29 ) (33 ) (9 ) Cash collateral receivable — — 14 11 25 Total derivatives - net basis $ 42 $ 11 $ (15 ) $ (22 ) $ 16 As of December 31, 2019 Not designated as hedging contracts (1) : Commodity assets $ 15 $ 2 $ 4 $ — $ 21 Commodity liabilities (3 ) — (31 ) (50 ) (84 ) Total 12 2 (27 ) (50 ) (63 ) Total derivatives 12 2 (27 ) (50 ) (63 ) Cash collateral receivable — — 20 27 47 Total derivatives - net basis $ 12 $ 2 $ (7 ) $ (23 ) $ (16 ) (1) PacifiCorp's commodity derivatives are generally included in rates and as of September 30, 2020 and December 31, 2019 , a regulatory asset of $9 million and $62 million , respectively, was recorded related to the net derivative liability of $9 million and $63 million , respectively. The following table reconciles the beginning and ending balances of PacifiCorp's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Beginning balance $ 68 $ 101 $ 62 $ 96 Changes in fair value (49 ) 16 (21 ) (12 ) Net gains (losses) reclassified to operating revenue 1 (11 ) 14 (27 ) Net (losses) gains reclassified to cost of fuel and energy (11 ) (25 ) (46 ) 24 Ending balance $ 9 $ 81 $ 9 $ 81 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 2020 2019 Electricity sales, net Megawatt hours (2 ) (2 ) Natural gas purchases Decatherms 102 129 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 three recognized credit rating agencies. These derivative contracts 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," or in some cases terminate the contract, in the event of a material adverse change in PacifiCorp's creditworthiness. These rights can vary by contract and by counterparty. As of September 30, 2020 , PacifiCorp's credit ratings for its senior secured debt and its issuer credit ratings for senior unsecured debt by Moody's Investor Service and Standard & Poor's Rating Services were investment grade. The aggregate fair value of PacifiCorp's derivative contracts in liability positions with specific credit-risk-related contingent features totaled $62 million and $80 million as of September 30, 2020 and December 31, 2019 , respectively, for which PacifiCorp had posted collateral of $25 million and $47 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, 2020 and December 31, 2019 , PacifiCorp would have been required to post $33 million and $27 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, 2020
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, 2020 Assets: Commodity derivatives $ 2 $ 98 $ 107 $ (35 ) $ 172 Interest rate derivatives — 1 88 — 89 Mortgage loans held for sale — 2,178 — — 2,178 Money market mutual funds (2) 1,493 — — — 1,493 Debt securities: United States government obligations 186 — — — 186 International government obligations — 5 — — 5 Corporate obligations — 75 — — 75 Municipal obligations — 4 — — 4 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 347 — — — 347 International companies 3,533 — — — 3,533 Investment funds 202 — — — 202 $ 5,763 $ 2,366 $ 195 $ (35 ) $ 8,289 Liabilities: Commodity derivatives $ — $ (106 ) $ (11 ) $ 69 $ (48 ) Interest rate derivatives (5 ) (56 ) — — (61 ) $ (5 ) $ (162 ) $ (11 ) $ 69 $ (109 ) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2019 Assets: Commodity derivatives $ — $ 45 $ 108 $ (24 ) $ 129 Interest rate derivatives — 2 14 — 16 Mortgage loans held for sale — 1,039 — — 1,039 Money market mutual funds (2) 824 — — — 824 Debt securities: United States government obligations 189 — — — 189 International government obligations — 4 — — 4 Corporate obligations — 58 — — 58 Municipal obligations — 1 — — 1 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 336 — — — 336 International companies 1,131 — — — 1,131 Investment funds 169 — — — 169 $ 2,649 $ 1,150 $ 122 $ (24 ) $ 3,897 Liabilities: Commodity derivatives $ (4 ) $ (143 ) $ (11 ) $ 103 $ (55 ) Interest rate derivatives (2 ) (19 ) — — (21 ) $ (6 ) $ (162 ) $ (11 ) $ 103 $ (76 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $34 million and $79 million as of September 30, 2020 and December 31, 2019 , respectively. (2) Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which the Company transacts. When quoted prices for identical contracts are not available, the Company uses forward price curves. Forward price curves represent the Company's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. The Company bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent brokers, exchanges, direct communication with market participants and actual transactions executed by the Company. Market price quotations are generally readily obtainable for the applicable term of the Company's outstanding derivative contracts; therefore, the Company's forward price curves reflect observable market quotes. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to the length of the contract. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, the Company uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. The Company's mortgage loans held for sale are valued based on independent quoted market prices, where available, or the prices of other mortgage whole loans with similar characteristics. As necessary, these prices are adjusted for typical securitization activities, including servicing value, portfolio composition, market conditions and liquidity. The Company's investments in money market mutual funds and debt and equity securities are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. The following table reconciles the beginning and ending balances of the Company's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods 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 (7 ) 243 (11 ) 579 Changes in fair value recognized in net regulatory assets 20 — (36 ) — Purchases 1 — 4 — Settlements 38 (233 ) 42 (505 ) Ending balance $ 96 $ 88 $ 96 $ 88 2019: Beginning balance $ 86 $ 23 $ 99 $ 10 Changes included in earnings 1 158 6 305 Changes in fair value recognized in OCI — — (1 ) — Changes in fair value recognized in net regulatory assets (17 ) — (40 ) — Purchases — — 4 — Settlements 8 (161 ) 10 (295 ) Ending balance $ 78 $ 20 $ 78 $ 20 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, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 43,154 $ 53,008 $ 39,353 $ 46,004
PacifiCorp [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of PacifiCorp's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. PacifiCorp has various financial assets and liabilities that are measured at fair value on the Consolidated Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that PacifiCorp has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect PacifiCorp's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. PacifiCorp develops these inputs based on the best information available, including its own data. The following table presents PacifiCorp's 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, 2020 Assets: Commodity derivatives $ — $ 57 $ — $ (4 ) $ 53 Money market mutual funds (2) 587 — — — 587 Investment funds 25 — — — 25 $ 612 $ 57 $ — $ (4 ) $ 665 Liabilities - Commodity derivatives $ — $ (66 ) $ — $ 29 $ (37 ) As of December 31, 2019 Assets: Commodity derivatives $ — $ 21 $ — $ (7 ) $ 14 Money market mutual funds (2) 23 — — — 23 Investment funds 25 — — — 25 $ 48 $ 21 $ — $ (7 ) $ 62 Liabilities - Commodity derivatives $ — $ (84 ) $ — $ 54 $ (30 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $25 million and $47 million as of September 30, 2020 and December 31, 2019 , respectively. (2) Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which PacifiCorp transacts. When quoted prices for identical contracts are not available, PacifiCorp uses forward price curves. Forward price curves represent PacifiCorp's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. PacifiCorp bases its forward price curves upon market price quotations, when available, or internally developed and commercial models, with internal and external fundamental data inputs. Market price quotations are obtained from independent energy brokers, exchanges, direct communication with market participants and actual transactions executed by PacifiCorp. Market price quotations for certain major electricity and natural gas trading hubs are generally readily obtainable for the first three years; therefore, PacifiCorp's forward price curves for those locations and periods reflect observable market quotes. Market price quotations for other electricity and natural gas trading hubs are not as readily obtainable for the first three years. Given that limited market data exists for these contracts, as well as for those contracts that are not actively traded, PacifiCorp uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The estimated fair value of these derivative contracts is a function of underlying forward commodity prices, interest rates, currency rates, related volatility, counterparty creditworthiness and duration of contracts. Refer to Note 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, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 8,649 $ 10,860 $ 7,658 $ 9,280
MidAmerican Energy Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of MidAmerican Energy's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. MidAmerican Energy has various financial assets and liabilities that are measured at fair value on the Financial Statements using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that MidAmerican Energy has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect MidAmerican Energy's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. MidAmerican Energy develops these inputs based on the best information available, including its own data. The following table presents MidAmerican Energy's financial assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of September 30, 2020: Assets: Commodity derivatives $ — $ 11 $ 3 $ (2 ) $ 12 Money market mutual funds (2) 194 — — — 194 Debt securities: United States government obligations 186 — — — 186 International government obligations — 5 — — 5 Corporate obligations — 75 — — 75 Municipal obligations — 4 — — 4 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 347 — — — 347 International companies 8 — — — 8 Investment funds 21 — — — 21 $ 756 $ 100 $ 3 $ (2 ) $ 857 Liabilities - commodity derivatives $ — $ (3 ) $ (1 ) $ 3 $ (1 ) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2019: Assets: Commodity derivatives $ — $ 2 $ 1 $ (1 ) $ 2 Money market mutual funds (2) 274 — — — 274 Debt securities: United States government obligations 189 — — — 189 International government obligations — 4 — — 4 Corporate obligations — 58 — — 58 Municipal obligations — 1 — — 1 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 336 — — — 336 International companies 9 — — — 9 Investment funds 15 — — — 15 $ 823 $ 66 $ 1 $ (1 ) $ 889 Liabilities - commodity derivatives $ — $ (9 ) $ — $ 2 $ (7 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $1 million as of September 30, 2020 and December 31, 2019 , respectively. (2) Amounts are included in cash and cash equivalents and investments and restricted investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost. MidAmerican Energy's investments in money market mutual funds and debt and equity securities are stated at fair value, with debt securities accounted for as available-for-sale securities. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. In the absence of a quoted market price or net asset value of an identical security, the fair value is determined using pricing models or net asset values based on observable market inputs and quoted market prices of securities with similar characteristics. MidAmerican Energy's long-term debt is carried at cost on the Balance Sheets. The fair value of MidAmerican Energy's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Energy's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Energy's long-term debt (in millions): As of September 30, 2020 As of December 31, 2019 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 7,210 $ 8,975 $ 7,208 $ 8,283
MidAmerican Funding, LLC and Subsidiaries [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements Refer to Note 7 of MidAmerican Energy's Notes to Financial Statements. MidAmerican Funding 's long-term debt is carried at cost on the Consolidated Financial Statements. The fair value of MidAmerican Funding 's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Funding 's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Funding 's long-term debt (in millions): As of September 30, 2020 As of December 31, 2019 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 7,450 $ 9,313 $ 7,448 $ 8,599
Nevada Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of Nevada Power's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Nevada Power has various financial assets and liabilities that are measured at fair value on the Consolidated Balance Sheets using inputs from the three levels of the fair value hierarchy. A financial asset or liability classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement. The three levels are as follows: • Level 1 — Inputs are unadjusted quoted prices in active markets for identical assets or liabilities that Nevada Power has the ability to access at the measurement date. • Level 2 — Inputs include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability and inputs that are derived principally from or corroborated by observable market data by correlation or other means (market corroborated inputs). • Level 3 — Unobservable inputs reflect Nevada Power's judgments about the assumptions market participants would use in pricing the asset or liability since limited market data exists. Nevada Power develops these inputs based on the best information available, including its own data. The following table presents Nevada Power's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of September 30, 2020 Assets: Commodity derivatives $ — $ — $ 6 $ 6 Money market mutual funds (1) 142 — — 142 Investment funds 2 — — 2 $ 144 $ — $ 6 $ 150 Liabilities - commodity derivatives $ — $ — $ (6 ) $ (6 ) As of December 31, 2019 Assets: Money market mutual funds (1) $ 10 $ — $ — $ 10 Investment funds 2 — — 2 $ 12 $ — $ — $ 12 Liabilities - commodity derivatives $ — $ — $ (8 ) $ (8 ) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost. Derivative contracts are recorded on the Consolidated Balance Sheets as either assets or liabilities and are stated at estimated fair value unless they are designated as normal purchases or normal sales and qualify for the exception afforded by GAAP. When available, the fair value of derivative contracts is estimated using unadjusted quoted prices for identical contracts in the market in which Nevada Power transacts. When quoted prices for identical contracts are not available, Nevada Power uses forward price curves. Forward price curves represent Nevada Power's estimates of the prices at which a buyer or seller could contract today for delivery or settlement at future dates. Nevada Power bases its forward price curves upon internally developed models, with internal and external fundamental data inputs. Market price quotations for certain electricity and natural gas trading hubs are not as readily obtainable due to markets that are not active. Given that limited market data exists for these contracts, Nevada Power uses forward price curves derived from internal models based on perceived pricing relationships to major trading hubs that are based on unobservable inputs. The model incorporates a mid-market pricing convention (the mid‑point price between bid and ask prices) as a practical expedient for valuing its assets and liabilities measured and reported at fair value. The determination of the fair value for derivative contracts not only includes counterparty risk, but also the impact of Nevada Power's nonperformance risk on its liabilities, which as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 2020 2019 Beginning balance $ (44 ) (11 ) $ (8 ) $ 3 Changes in fair value recognized in regulatory assets 13 (13 ) (31 ) (30 ) Settlements 31 6 39 9 Ending balance $ — $ (18 ) $ — $ (18 ) 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, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,496 $ 3,210 $ 2,351 $ 2,848
Sierra Pacific Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurements	Fair Value Measurements The carrying value of Sierra Pacific's cash, certain cash equivalents, receivables, payables, accrued liabilities and short-term borrowings approximates fair value because of the short-term maturity of these instruments. Sierra Pacific has various financial assets and liabilities that are measured at fair value on the 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 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, 2020 Assets: Commodity derivatives $ — $ — $ 2 $ 2 Money market mutual funds (1) 18 — — 18 Investment funds 1 — — 1 $ 19 $ — $ 2 $ 21 As of December 31, 2019 Assets - money market mutual funds (1) $ 25 $ — $ — $ 25 Liabilities - commodity derivatives $ — $ — $ (1 ) $ (1 ) (1) Amounts are included in cash and cash equivalents on the Balance Sheets. The fair value of these money market mutual funds approximates cost. Sierra Pacific's investments in money market mutual funds and investment funds are stated at fair value. When available, a readily observable quoted market price or net asset value of an identical security in an active market is used to record the fair value. Sierra Pacific's long-term debt is carried at cost on the 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, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,164 $ 1,362 $ 1,135 $ 1,258

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2020
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Construction Commitments During the nine-month period ended September 30, 2020 , MidAmerican Energy entered into firm construction commitments totaling $274 million for the remainder of 2020 through 2021 , substantially related to the construction of wind-powered generating facilities in Iowa. Easements During the nine-month period ended September 30, 2020 , MidAmerican Energy entered into non-cancelable easements with minimum payment commitments totaling $102 million through 2060 for land in Iowa on which some of its wind-powered generating facilities will be located. Maintenance and Service Contracts During the nine-month period ended September 30, 2020 , MidAmerican Energy entered into non-cancelable maintenance and service contracts related to wind-powered generating facilities with minimum payment commitments totaling $75 million through 2031 . BHE Renewables' Counterparty Risk On January 29, 2019, PG&E Corporation and Pacific Gas and Electric Company (the "PG&E Utility") (together "PG&E") filed voluntary petitions for relief under chapter 11 of the United States Bankruptcy Code in the United States Bankruptcy Court for the Northern District of California ("PG&E Bankruptcy Filing"). The Company owns 100% of Topaz Solar Farm LLC ("Topaz") and owns a 49% interest in Agua Caliente Solar, LLC ("Agua Caliente"). Topaz is a 550 -MW solar photovoltaic electric power generating facility located in California. Topaz sells 100% of its energy, capacity and renewable energy credits ("RECs") generated from the facility to PG&E Utility under a 25-year wholesale power purchase agreement ("PPA") that is in effect until October 2039. Agua Caliente is a 290 -MW solar photovoltaic electric power generating facility located in Arizona. Agua Caliente sells 100% of its energy, capacity and RECs generated from the facility to PG&E Utility under a 25-year wholesale PPA that is in effect until June 2039. PG&E paid in full all amounts invoiced to date for post-petition energy deliveries for both Topaz and Agua Caliente as well as for the power delivered from January 1 through January 28, 2019. The PG&E Bankruptcy Filing was an event of default under the Topaz PPA ("PPA Default"); however, the Company maintained that, in light of the current facts and circumstances, the PPA Default could not reasonably be expected to result in a material adverse effect under the Topaz indenture and, therefore, no default had occurred under the Topaz indenture. On July 1, 2020, PG&E announced it had emerged from bankruptcy, successfully completing its restructuring process and implementing PG&E's Plan of Reorganization (the "Plan") that was confirmed by the United States Bankruptcy Court on June 20, 2020. The Company believes that no impairment exists and that current debt obligations will be met, as PG&E's emergence from bankruptcy has cured the PPA Default and PG&E's Plan includes the assumption of both the Topaz and Agua Caliente PPAs. The Company began receiving distributions from Topaz and Agua Caliente in the second half of 2020 in accordance with the provisions of each respective debt agreement. 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 California (the "2020 Wildfires"). The wildfires have spread across certain parts of PacifiCorp's service territory and surrounding areas in Oregon and California. Certain of the wildfires are still burning and are at various levels of containment. Investigations into the cause and origin of each wildfire are complex and ongoing. Although those investigations are not complete, several civil actions (including a putative class action complaint) have been filed 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 the doctrine of inverse condemnation, courts have held investor-owned utilities liable for property damages along with associated interest and attorneys' fees where its facilities are a substantial cause of a wildfire that caused the property damage, even if the utility is not at fault. To date, no lawsuits arising from the 2020 Wildfires have been filed in California. 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. 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 damage, fire suppression costs, personal injury damages and interest. PacifiCorp has accrued its best estimate of the potential losses associated with the 2020 Wildfires that are considered probable of being incurred. Given the early stages of the investigations into the cause and origin of the 2020 Wildfires and the uncertainty surrounding potential damages, it is reasonably possible PacifiCorp may incur additional losses beyond the amounts accrued; however, PacifiCorp is currently unable to estimate the range of possible additional losses that could be incurred. PacifiCorp has some level of insurance coverage that may apply to damages caused by wildfires, but it may be insufficient to cover all such damages. PacifiCorp has accrued its best estimate of the expected probable insurance recovery associated with the estimated losses accrued. 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 does not guarantee dam removal. Instead, it 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 main-stem Klamath dams from PacifiCorp to the KRRC. The FERC approved partial transfer of the Klamath license in July 2020, 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. The order does not immediately take effect and PacifiCorp is working with its settlement partners to implement the agreement. The United States Court of Appeals for the District of Columbia Circuit issued a decision in the Hoopa Valley Tribe v. FERC litigation, in January 2019, finding that the states of California and Oregon have waived their Clean Water Act, Section 401, water quality certification authority over the Klamath hydroelectric project relicensing. This decision has the potential to limit the ability of the States to impose water quality conditions on new and relicensed projects. Environmental interests, supported by California, Oregon and other states, asked the court to rehear the case, which was denied. Subsequently, environmental groups, supported by numerous states, filed a petition for certiorari before the United States Supreme Court, which was denied on December 9, 2019, thereby allowing the circuit court opinion to stand as a final and unappealable decision. Guarantees The Company 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 the Company's consolidated financial results.
PacifiCorp [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters PacifiCorp is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. PacifiCorp does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. PacifiCorp is also involved in other kinds of legal actions, some of which assert or may assert claims or seek to impose fines, penalties and other costs in substantial amounts and are described below. California and Oregon 2020 Wildfires In September 2020, a severe weather event resulting in high winds, low humidity and warm temperatures contributed to several major wildfires, private and public property damage, personal injuries and loss of life and widespread power outages in Oregon and California (the "2020 Wildfires"). The wildfires have spread across certain parts of PacifiCorp's service territory and surrounding areas in Oregon and California. Certain of the wildfires are still burning and are at various levels of containment. Investigations into the cause and origin of each wildfire are complex and ongoing. Although those investigations are not complete, several civil actions (including a putative class action complaint) have been filed 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 the doctrine of inverse condemnation, courts have held investor-owned utilities liable for property damages along with associated interest and attorneys' fees where its facilities are a substantial cause of a wildfire that caused the property damage, even if the utility is not at fault. To date, no lawsuits arising from the 2020 Wildfires have been filed in California. 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. 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 damage, fire suppression costs, personal injury damages and interest. PacifiCorp has accrued its best estimate of the potential losses associated with the 2020 Wildfires that are considered probable of being incurred. Given the early stages of the investigations into the cause and origin of the 2020 Wildfires and the uncertainty surrounding potential damages, it is reasonably possible PacifiCorp may incur additional losses beyond the amounts accrued; however, PacifiCorp is currently unable to estimate the range of possible additional losses that could be incurred. PacifiCorp has some level of insurance coverage that may apply to damages caused by wildfires, but it may be insufficient to cover all such damages. PacifiCorp has accrued its best estimate of the expected probable insurance recovery associated with the estimated losses accrued. Environmental Laws and Regulations PacifiCorp 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 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 does not guarantee dam removal. Instead, it 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 main-stem Klamath dams from PacifiCorp to the KRRC. The FERC approved partial transfer of the Klamath license in July 2020, 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. The order does not immediately take effect and PacifiCorp is working with its settlement partners to implement the agreement. The United States Court of Appeals for the District of Columbia Circuit issued a decision in the Hoopa Valley Tribe v. FERC litigation, in January 2019, finding that the states of California and Oregon have waived their Clean Water Act, Section 401, water quality certification authority over the Klamath hydroelectric project relicensing. This decision has the potential to limit the ability of the States to impose water quality conditions on new and relicensed projects. Environmental interests, supported by California, Oregon and other states, asked the court to rehear the case, which was denied. Subsequently, environmental groups, supported by numerous states, filed a petition for certiorari before the United States Supreme Court, which was denied on December 9, 2019, thereby allowing the circuit court opinion to stand as a final and unappealable decision. Guarantees PacifiCorp has entered into guarantees as part of the normal course of business and the sale of certain assets. These guarantees are not expected to have a material impact on PacifiCorp's consolidated financial results.
MidAmerican Energy Company [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Construction Commitments During the nine-month period ended September 30, 2020 , MidAmerican Energy entered into firm construction commitments totaling $274 million for the remainder of 2020 through 2021 , substantially related to the construction of wind-powered generating facilities in Iowa. Easements During the nine-month period ended September 30, 2020 , MidAmerican Energy entered into non-cancelable easements with minimum payment commitments totaling $102 million through 2060 for land in Iowa on which some of its wind-powered generating facilities will be located. Maintenance and Service Contracts During the nine-month period ended September 30, 2020 , MidAmerican Energy entered into non-cancelable maintenance and service contracts related to wind-powered generating facilities with minimum payment commitments totaling $75 million through 2031 . 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 Energy's wholesale transmission rates are set annually using FERC-approved formula rates subject to true-up for actual cost of service. MidAmerican Energy is authorized by the FERC to include a 0.50% adder beyond the approved base return on equity ("ROE") effective January 2015. Prior to September 2016, the rates in effect were based on a 12.38% ROE. In November 2013 and February 2015, a coalition of intervenors filed successive complaints with the FERC requesting that the 12.38% ROE no longer be found just and reasonable and sought to reduce the base ROE to 9.15% and 8.67% , respectively. In September 2016, the FERC issued an order for the first complaint, which reduces the base ROE to 10.32% and required refunds, plus interest, for the period from November 2013 through February 2015. Customer refunds relative to the first complaint occurred in February 2017. In November 2019, the FERC issued an order addressing the second complaint and issues on appeal in the first complaint. The order established a ROE of 9.88% ( 10.38% including the 0.50% adder) for the 15-month refund period of the first complaint and prospectively from September 2016 forward. In May 2020, the FERC issued an order on rehearing of the November 2019 order. The May 2020 order affirmed the FERC's prior decision to dismiss the second complaint and established an ROE of 10.02% ( 10.52% including the 0.50% adder) for the 15-month refund period of the first complaint and prospectively from September 2016 to the date of the May 2020 order. These orders continue to be subject to judicial appeal. MidAmerican Energy cannot predict the ultimate outcome of these matters and, as of September 30, 2020 , has accrued an $11 million liability for refunds of amounts collected under the higher ROE during the periods covered by both complaints.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies MidAmerican Funding is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. MidAmerican Funding does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Refer to Note 8 of MidAmerican Energy's Notes to Financial Statements.
Nevada Power Company [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters Nevada Power is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Nevada Power does not believe that such normal and routine litigation will have a material impact on its consolidated financial results. Nevada Power 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. Environmental Laws and Regulations Nevada Power is subject to federal, state and local laws and regulations regarding climate change, renewable portfolio standards, air and water quality, emissions performance standards, coal combustion byproduct disposal, hazardous and solid waste disposal, protected species and other environmental matters that have the potential to impact Nevada Power's current and future operations. Nevada Power believes it is in material compliance with all applicable laws and regulations.
Sierra Pacific Power Company [Member]
Loss Contingencies [Line Items]
Commitments and Contingencies	Commitments and Contingencies Legal Matters Sierra Pacific is party to a variety of legal actions arising out of the normal course of business. Plaintiffs occasionally seek punitive or exemplary damages. Sierra Pacific does not believe that such normal and routine litigation will have a material impact on its financial results. Sierra Pacific 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. 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.

Revenue from Contracts with Cus

Revenue from Contracts with Customers Revenue from Contracts with Customers (Notes)	9 Months Ended
	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers Energy Products and Services The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the Company's reportable segment information included in Note 13 (in millions): For the Three-Month Period Ended 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 distribution 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 distribution 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 For the Three-Month Period Ended September 30, 2019 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 1,320 $ 651 $ 998 $ — $ — $ — $ — $ (1 ) $ 2,968 Retail gas — 61 16 — — — — — 77 Wholesale 8 56 6 — — — — (1 ) 69 Transmission and distribution 26 16 27 195 — 179 — — 443 Interstate pipeline — — — — 221 — — (25 ) 196 Other — — — — — — — — — Total Regulated 1,354 784 1,047 195 221 179 — (27 ) 3,753 Nonregulated — 9 — 9 — 5 276 161 460 Total Customer Revenue 1,354 793 1,047 204 221 184 276 134 4,213 Other revenue 13 4 7 26 5 — 53 16 124 Total $ 1,367 $ 797 $ 1,054 $ 230 $ 226 $ 184 $ 329 $ 150 $ 4,337 For the Nine-Month Period Ended September 30, 2019 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 3,613 $ 1,561 $ 2,183 $ — $ — $ — $ — $ (1 ) $ 7,356 Retail gas — 416 74 — — — — — 490 Wholesale 47 232 34 — — — — (2 ) 311 Transmission and distribution 76 47 75 634 — 514 — — 1,346 Interstate pipeline — — — — 805 — — (86 ) 719 Other — — 1 — — — — — 1 Total Regulated 3,736 2,256 2,367 634 805 514 — (89 ) 10,223 Nonregulated — 25 — 27 — 13 599 442 1,106 Total Customer Revenue 3,736 2,281 2,367 661 805 527 599 353 11,329 Other revenue 57 18 22 75 4 — 146 78 400 Total $ 3,793 $ 2,299 $ 2,389 $ 736 $ 809 $ 527 $ 745 $ 431 $ 11,729 (1) The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations. Real Estate Services The following table summarizes the Company's real estate services Customer Revenue by line of business (in millions): HomeServices Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Brokerage $ 1,449 $ 1,172 $ 3,183 $ 3,087 Franchise 23 20 54 53 Total Customer Revenue 1,472 1,192 3,237 3,140 Other revenue 270 115 591 279 Total $ 1,742 $ 1,307 $ 3,828 $ 3,419 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, 2020 , by reportable segment (in millions): Performance obligations expected to be satisfied: Less than 12 months More than 12 months Total BHE Pipeline Group $ 979 $ 5,213 $ 6,192 BHE Transmission 663 166 829 Total $ 1,642 $ 5,379 $ 7,021
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes PacifiCorp's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Retail: Residential $ 519 $ 478 $ 1,363 $ 1,316 Commercial 418 419 1,122 1,152 Industrial 293 306 838 887 Other retail 114 100 209 203 Total retail 1,344 1,303 3,532 3,558 Wholesale 59 8 76 47 Transmission 33 26 79 76 Other Customer Revenue 42 17 88 55 Total Customer Revenue 1,478 1,354 3,775 3,736 Other revenue 1 13 54 57 Total operating revenue $ 1,479 $ 1,367 $ 3,829 $ 3,793
Nevada Power Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes Nevada Power's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Retail: Residential $ 495 $ 468 $ 993 $ 934 Commercial 127 142 317 346 Industrial 147 169 300 351 Other 3 4 8 15 Total fully bundled 772 783 1,618 1,646 Distribution only service 8 9 20 24 Total retail 780 792 1,638 1,670 Wholesale, transmission and other 21 8 48 39 Total Customer Revenue 801 800 1,686 1,709 Other revenue 7 6 20 19 Total revenue $ 808 $ 806 $ 1,706 $ 1,728
Sierra Pacific Power Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 11 (in millions): Three-Month Periods Ended September 30, 2020 2019 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 76 $ 11 $ 87 $ 75 $ 11 $ 86 Commercial 71 3 74 80 3 83 Industrial 57 1 58 58 1 59 Other 1 — 1 2 — 2 Total fully bundled 205 15 220 215 15 230 Distribution only service 1 — 1 1 — 1 Total retail 206 15 221 216 15 231 Wholesale, transmission and other 13 — 13 16 — 16 Total Customer Revenue 219 15 234 232 15 247 Other revenue 1 — 1 — 1 1 Total revenue $ 220 $ 15 $ 235 $ 232 $ 16 $ 248 Nine-Month Periods Ended September 30, 2020 2019 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 208 $ 54 $ 262 $ 201 $ 49 $ 250 Commercial 183 20 203 188 18 206 Industrial 132 8 140 143 6 149 Other 3 — 3 5 — 5 Total fully bundled 526 82 608 537 73 610 Distribution only service 3 — 3 3 — 3 Total retail 529 82 611 540 73 613 Wholesale, transmission and other 37 — 37 44 — 44 Total Customer Revenue 566 82 648 584 73 657 Other revenue 3 1 4 2 2 4 Total revenue $ 569 $ 83 $ 652 $ 586 $ 75 $ 661
MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes MidAmerican Energy's revenue from contracts with customers ("Customer Revenue") by line of business and customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 10 , (in millions): For the Three-Month Period Ended 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 For the Three-Month Period Ended September 30, 2019 For the Nine-Month Period Ended September 30, 2019 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 228 $ 41 $ — $ 269 $ 547 $ 282 $ — $ 829 Commercial 101 10 — 111 255 95 — 350 Industrial 274 3 — 277 641 12 — 653 Natural gas transportation services — 7 — 7 — 27 — 27 Other retail (1) 48 — — 48 118 — — 118 Total retail 651 61 — 712 1,561 416 — 1,977 Wholesale 41 15 — 56 168 64 — 232 Multi-value transmission projects 17 — — 17 47 — — 47 Other Customer Revenue — — 8 8 — — 23 23 Total Customer Revenue 709 76 8 793 1,776 480 23 2,279 Other revenue 3 — — 3 16 2 — 18 Total operating revenue $ 712 $ 76 $ 8 $ 796 $ 1,792 $ 482 $ 23 $ 2,297 (1) Other retail includes provisions for rate refunds, for which any actual refunds will be reflected in the applicable customer classes upon resolution of the related regulatory proceeding.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers Refer to Note 9 of MidAmerican Energy's Notes to Financial Statements. Additionally, MidAmerican Funding had other Accounting Standards Codification Topic 606 revenue of $- million and $1 million for the three-month periods ended September 30, 2020 and 2019 , respectively, and $8 million and $2 million for the nine-month periods ended September 30, 2020 and 2019 , respectively.

Components of Accumulated Other

Components of Accumulated Other Comprehensive Loss, Net	9 Months Ended
	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Income (Loss), Net	Components of Other Comprehensive Income (Loss), Net The following table shows the change in AOCI attributable to BHE shareholders by each component of OCI, net of applicable income tax (in millions): Unrecognized Foreign Unrealized AOCI Amounts on Currency Gains (Losses) Attributable Retirement Translation on Cash To BHE Benefits Adjustment Flow Hedges Shareholders, Net Balance, December 31, 2018 $ (358 ) $ (1,623 ) $ 36 $ (1,945 ) Other comprehensive loss (40 ) (66 ) (28 ) (134 ) Balance, September 30, 2019 $ (398 ) $ (1,689 ) $ 8 $ (2,079 ) 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 )

Segment Information

Segment Information	9 Months Ended
	Sep. 30, 2020
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Segment Information The Company's reportable segments with foreign operations include Northern Powergrid , whose business is principally in the United Kingdom, BHE Transmission , whose business includes operations in Canada, and BHE Renewables , whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Information related to the Company's reportable segments is shown below (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating revenue: PacifiCorp $ 1,479 $ 1,367 $ 3,829 $ 3,793 MidAmerican Funding 812 797 2,114 2,299 NV Energy 1,042 1,054 2,359 2,389 Northern Powergrid 246 230 733 736 BHE Pipeline Group 264 226 890 809 BHE Transmission 175 184 516 527 BHE Renewables 309 329 731 745 HomeServices 1,742 1,307 3,828 3,419 BHE and Other (1) 124 150 332 431 Total operating revenue $ 6,193 $ 5,644 $ 15,332 $ 15,148 Depreciation and amortization: PacifiCorp $ 234 $ 272 $ 696 $ 686 MidAmerican Funding 179 184 530 540 NV Energy 128 121 377 361 Northern Powergrid 69 60 195 186 BHE Pipeline Group 45 28 134 85 BHE Transmission 61 59 176 177 BHE Renewables 72 71 214 210 HomeServices 11 11 34 35 BHE and Other (1) 1 — 1 (2 ) Total depreciation and amortization $ 800 $ 806 $ 2,357 $ 2,278 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating income: PacifiCorp $ 361 $ 333 $ 851 $ 885 MidAmerican Funding 232 234 444 444 NV Energy 347 313 587 547 Northern Powergrid 106 98 327 337 BHE Pipeline Group 101 87 442 398 BHE Transmission 79 91 236 244 BHE Renewables 143 183 244 298 HomeServices 239 113 336 209 BHE and Other (1) (61 ) (2 ) (65 ) (34 ) Total operating income 1,547 1,450 3,402 3,328 Interest expense (504 ) (475 ) (1,490 ) (1,428 ) Capitalized interest 24 23 60 56 Allowance for equity funds 50 56 122 126 Interest and dividend income 17 25 57 91 Gains (losses) on marketable securities, net 1,797 (234 ) 2,407 (296 ) Other, net 36 2 61 67 Total income before income tax expense (benefit) and equity loss $ 2,967 $ 847 $ 4,619 $ 1,944 Interest expense: PacifiCorp $ 107 $ 101 $ 319 $ 299 MidAmerican Funding 79 74 238 223 NV Energy 56 55 171 173 Northern Powergrid 34 33 97 102 BHE Pipeline Group 15 14 44 38 BHE Transmission 38 40 111 118 BHE Renewables 41 44 125 132 HomeServices 1 6 9 20 BHE and Other (1) 133 108 376 323 Total interest expense $ 504 $ 475 $ 1,490 $ 1,428 Operating revenue by country: United States $ 5,773 $ 5,222 $ 14,086 $ 13,875 United Kingdom 246 229 733 734 Canada 174 183 512 526 Philippines and other — 10 1 13 Total operating revenue by country $ 6,193 $ 5,644 $ 15,332 $ 15,148 Income before income tax expense (benefit) and equity loss by country: United States $ 2,839 $ 728 $ 4,220 $ 1,546 United Kingdom 82 49 250 228 Canada 44 55 130 134 Philippines and other 2 15 19 36 Total income before income tax expense (benefit) and equity loss by country $ 2,967 $ 847 $ 4,619 $ 1,944 As of September 30, December 31, 2020 2019 Assets: PacifiCorp $ 26,686 $ 24,861 MidAmerican Funding 23,372 22,664 NV Energy 14,705 14,128 Northern Powergrid 8,491 8,385 BHE Pipeline Group 6,313 6,100 BHE Transmission 8,799 8,776 BHE Renewables 11,630 9,961 HomeServices 5,366 3,846 BHE and Other (1) 3,824 1,330 Total assets $ 109,186 $ 100,051 (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. The following table shows the change in the carrying amount of goodwill by reportable segment for the nine-month period ended September 30, 2020 (in millions): BHE Pipeline Group PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Transmission BHE Renewables HomeServices Total December 31, 2019 $ 1,129 $ 2,102 $ 2,369 $ 978 $ 73 $ 1,520 $ 95 $ 1,456 $ 9,722 Foreign currency translation — — — (18 ) — (37 ) — — (55 ) September 30, 2020 $ 1,129 $ 2,102 $ 2,369 $ 960 $ 73 $ 1,483 $ 95 $ 1,456 $ 9,667
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Segment Information MidAmerican Energy has identified two reportable segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating revenue: Regulated electric $ 728 $ 712 $ 1,717 $ 1,792 Regulated natural gas 80 76 384 482 Other 4 8 5 23 Total operating revenue $ 812 $ 796 $ 2,106 $ 2,297 Operating income: Regulated electric $ 238 $ 243 $ 398 $ 396 Regulated natural gas (6 ) (8 ) 40 45 Other — (1 ) — 2 Total operating income 232 234 438 443 Interest expense (74 ) (68 ) (224 ) (207 ) Allowance for borrowed funds 5 7 12 20 Allowance for equity funds 16 27 33 59 Other, net 14 4 30 34 Income before income tax benefit $ 193 $ 204 $ 289 $ 349 As of September 30, December 31, Assets: Regulated electric $ 19,782 $ 19,093 Regulated natural gas 1,479 1,468 Other 7 3 Total assets $ 21,268 $ 20,564
MidAmerican Funding, LLC and Subsidiaries [Domain]
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Segment Information MidAmerican Funding has identified two reportable segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. "Other" in the tables below consists of the financial results and assets of nonregulated operations, MHC and MidAmerican Funding . The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating revenue: Regulated electric $ 728 $ 712 $ 1,717 $ 1,792 Regulated natural gas 80 76 384 482 Other 4 9 13 25 Total operating revenue $ 812 $ 797 $ 2,114 $ 2,299 Operating income: Regulated electric $ 238 $ 243 $ 398 $ 396 Regulated natural gas (6 ) (8 ) 40 45 Other — (1 ) 6 3 Total operating income 232 234 444 444 Interest expense (79 ) (74 ) (238 ) (223 ) Allowance for borrowed funds 5 7 12 20 Allowance for equity funds 16 27 33 59 Other, net 15 5 30 36 Income before income tax benefit $ 189 $ 199 $ 281 $ 336 As of September 30, December 31, Assets (1) : Regulated electric $ 20,973 $ 20,284 Regulated natural gas 1,558 1,547 Other 17 9 Total assets $ 22,548 $ 21,840 (1) Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
Segment Reporting Disclosure [Text Block]	Segment Information Sierra Pacific has identified two reportable operating segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by the PUCN; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating revenue: Regulated electric $ 220 $ 232 $ 569 $ 586 Regulated natural gas 15 16 83 75 Total operating revenue $ 235 $ 248 $ 652 $ 661 Operating income: Regulated electric $ 66 $ 67 $ 119 $ 119 Regulated natural gas 2 — 12 12 Total operating income 68 67 131 131 Interest expense (14 ) (12 ) (42 ) (36 ) Allowance for borrowed funds — — 1 1 Allowance for equity funds 1 — 3 2 Other, net 3 1 7 4 Income before income tax expense $ 58 $ 56 $ 100 $ 102 As of September 30, December 31, 2020 2019 Assets: Regulated electric $ 3,515 $ 3,319 Regulated natural gas 318 308 Other (1) 36 44 Total assets $ 3,869 $ 3,671 (1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

BHE Shareholders' Equity (Notes

BHE Shareholders' Equity (Notes)	9 Months Ended
	Sep. 30, 2020
Equity [Abstract]
Stockholders' Equity Note Disclosure [Text Block]	BHE Shareholders' Equity For the nine-month periods ended September 30, 2020 and 2019 , BHE repurchased 180,358 shares of its common stock for $126 million and 447,712 shares of its common stock for $293 million , respectively.

Cash and Cash Equivalents and_2

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure (Policies)	9 Months Ended
	Sep. 30, 2020
MidAmerican Funding, LLC and Subsidiaries [Domain]
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , consist substantially of funds restricted for wildlife preservation and, as of December 31, 2019 , the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements.
MidAmerican Energy Company [Member]
Cash and Cash Equivalents, Policy [Policy Text Block]	Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , consist substantially of funds restricted for wildlife preservation and, as of December 31, 2019 , the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements.

Property, Plant and Equipment_2

Property, Plant and Equipment, Net (Tables)	9 Months Ended
	Sep. 30, 2020
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment [Table Text Block]	Property, plant and equipment, net consists of the following (in millions): As of Depreciable September 30, December 31, Life 2020 2019 Regulated assets: Utility generation, transmission and distribution systems 5-80 years $ 82,743 $ 81,127 Interstate natural gas pipeline assets 3-80 years 8,281 8,165 91,024 89,292 Accumulated depreciation and amortization (27,401 ) (26,353 ) Regulated assets, net 63,623 62,939 Nonregulated assets: Independent power plants 5-30 years 7,002 6,983 Other assets 3-30 years 1,950 1,834 8,952 8,817 Accumulated depreciation and amortization (2,455 ) (2,183 ) Nonregulated assets, net 6,497 6,634 Net operating assets 70,120 69,573 Construction work-in-progress 5,132 3,732 Property, plant and equipment, net $ 75,252 $ 73,305
MidAmerican Energy Company [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	Property, plant and equipment, net consists of the following (in millions): As of September 30, December 31, Depreciable Life 2020 2019 Utility plant in service, net: Generation 20-70 years $ 15,917 $ 15,687 Transmission 52-75 years 2,303 2,124 Electric distribution 20-75 years 4,281 4,095 Natural gas distribution 29-75 years 1,873 1,820 Utility plant in service 24,374 23,726 Accumulated depreciation and amortization (6,584 ) (6,139 ) Utility plant in service, net 17,790 17,587 Nonregulated property, net: Nonregulated property gross 20-50 years 7 7 Accumulated depreciation and amortization (1 ) (1 ) Nonregulated property, net 6 6 17,796 17,593 Construction work-in-progress 1,253 782 Property, plant and equipment, net $ 19,049 $ 18,375
PacifiCorp [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	As of September 30, December 31, Depreciable Life 2020 2019 Utility Plant: Generation 14 - 67 years $ 12,475 $ 12,509 Transmission 58 - 75 years 6,687 6,482 Distribution 20 - 70 years 7,522 7,307 Intangible plant (1) 5 - 75 years 1,027 1,016 Other 5 - 60 years 1,483 1,449 Utility plant in service 29,194 28,763 Accumulated depreciation and amortization (9,886 ) (9,803 ) Utility plant in-service, net 19,308 18,960 Other non-regulated, net of accumulated depreciation and amortization 59 years 9 10 Plant, net 19,317 18,970 Construction work-in-progress 2,725 2,003 Property, plant and equipment, net $ 22,042 $ 20,973 (1) Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years. During the nine-month period ended September 30, 2020 , PacifiCorp acquired wind turbines from BHE Wind, LLC, an indirect wholly owned subsidiary of BHE, for $147 million . The wind turbines will be installed as part of newly constructed wind-powered generating facilities that are planned to be placed in service in 2020 and 2021.
Nevada Power Company [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life September 30, December 31, 2020 2019 Utility plant: Generation 30 - 55 years $ 3,612 $ 3,541 Transmission 45 - 70 years 1,455 1,444 Distribution 20 - 65 years 3,738 3,567 General and intangible plant 5 - 65 years 784 741 Utility plant 9,589 9,293 Accumulated depreciation and amortization (3,112 ) (2,951 ) Utility plant, net 6,477 6,342 Other non-regulated, net of accumulated depreciation and amortization 45 years 1 1 Plant, net 6,478 6,343 Construction work-in-progress 165 195 Property, plant and equipment, net $ 6,643 $ 6,538
Sierra Pacific Power Company [Member]
Property, Plant and Equipment [Line Items]
Public Utility Property, Plant, and Equipment	Property, plant and equipment, net consists of the following (in millions): As of Depreciable Life September 30, December 31, 2020 2019 Utility plant: Electric generation 25 - 60 years $ 1,129 $ 1,133 Electric transmission 50 - 100 years 911 840 Electric distribution 20 - 100 years 1,724 1,669 Electric general and intangible plant 5 - 70 years 187 178 Natural gas distribution 35 - 70 years 424 417 Natural gas general and intangible plant 5 - 70 years 14 14 Common general 5 - 70 years 344 338 Utility plant 4,733 4,589 Accumulated depreciation and amortization (1,733 ) (1,629 ) Utility plant, net 3,000 2,960 Other non-regulated, net of accumulated depreciation and amortization 70 years 2 2 Plant, net 3,002 2,962 Construction work-in-progress 141 113 Property, plant and equipment, net $ 3,143 $ 3,075

Investments and Restricted Ca_2

Investments and Restricted Cash and Investments (Tables)	9 Months Ended
	Sep. 30, 2020
Investments and Restricted Cash and Investments [Abstract]
Investments and Restricted Cash and Investments	Investments and restricted cash and cash equivalents and investments consists of the following (in millions): As of September 30, December 31, 2020 2019 Investments: BYD Company Limited common stock $ 3,525 $ 1,122 Rabbi trusts 412 410 Other 205 187 Total investments 4,142 1,719 Equity method investments: BHE Renewables tax equity investments 5,000 3,130 Electric Transmission Texas, LLC 597 555 Bridger Coal Company 78 81 Other 168 181 Total equity method investments 5,843 3,947 Restricted cash and cash equivalents and investments: Quad Cities Station nuclear decommissioning trust funds 631 599 Other restricted cash and cash equivalents 327 230 Total restricted cash and cash equivalents and investments 958 829 Total investments and restricted cash and cash equivalents and investments $ 10,943 $ 6,495 Reflected as: Current assets $ 340 $ 240 Noncurrent assets 10,603 6,255 Total investments and restricted cash and cash equivalents and investments $ 10,943 $ 6,495
Unrealized Gain (Loss) on Investments [Table Text Block]	Gains (losses) 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, 2020 2019 2020 2019 Unrealized gains (losses) recognized on marketable securities still held at the reporting date $ 1,794 $ (236 ) $ 2,403 $ (297 ) Net gains recognized on marketable securities sold during the period 3 2 4 1 Gains (losses) on marketable securities, net $ 1,797 $ (234 ) $ 2,407 $ (296 )

Cash and Cash Equivalents and_3

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure (Tables)	9 Months Ended
	Sep. 30, 2020
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Cash equivalents consist of funds invested in money market mutual funds, United States Treasury Bills and other investments with a maturity of three months or less when purchased. Cash and cash equivalents exclude amounts where availability is restricted by legal requirements, loan agreements or other contractual provisions. Restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , consist substantially of funds restricted for the purpose of constructing solid waste facilities under tax-exempt bond obligation agreements and debt service obligations for certain of the Company's nonregulated renewable energy projects. A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 1,769 $ 1,040 Restricted cash and cash equivalents 309 212 Investments and restricted cash and cash equivalents and investments 18 16 Total cash and cash equivalents and restricted cash and cash equivalents $ 2,096 $ 1,268
Sierra Pacific Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 22 $ 27 Restricted cash and cash equivalents included in other current assets 4 5 Total cash and cash equivalents and restricted cash and cash equivalents $ 26 $ 32
Nevada Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 152 $ 15 Restricted cash and cash equivalents included in other current assets 8 10 Total cash and cash equivalents and restricted cash and cash equivalents $ 160 $ 25
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	As of September 30, December 31, 2020 2019 Cash and cash equivalents $ 590 $ 30 Restricted cash included in other current assets 4 4 Restricted cash included in other assets 3 2 Total cash and cash equivalents and restricted cash and cash equivalents $ 597 $ 36
MidAmerican Funding, LLC and Subsidiaries [Domain]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 193 $ 288 Restricted cash and cash equivalents in other current assets 11 43 Total cash and cash equivalents and restricted cash and cash equivalents $ 204 $ 331
MidAmerican Energy Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Schedule of Cash Flow, Supplemental Disclosures [Table Text Block]	A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of September 30, 2020 and December 31, 2019 , 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, 2020 2019 Cash and cash equivalents $ 188 $ 287 Restricted cash and cash equivalents in other current assets 11 43 Total cash and cash equivalents and restricted cash and cash equivalents $ 199 $ 330

Income Taxes (Tables)

Income Taxes (Tables)	9 Months Ended
	Sep. 30, 2020
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	Income Taxes A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (20 ) (43 ) (23 ) (35 ) State income tax, net of federal income tax benefit 3 (3 ) 2 (6 ) Income tax effect of foreign income 1 (1 ) — (2 ) Effects of ratemaking (2 ) (9 ) (2 ) (5 ) Other, net — (1 ) — — Effective income tax rate 3 % (36 )% (2 )% (27 )% Income tax credits relate primarily to production tax credits ("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. Income tax effect on foreign income includes, among other items, a deferred income tax charge of $35 million in 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, 2020 and 2019 , the Company received net cash payments for federal income taxes from Berkshire Hathaway totaling $1.0 billion and $534 million , respectively.
Schedule of Effective Income Tax Rate Reconciliation	A reconciliation of the federal statutory income tax rate to the effective income tax rate applicable to income before income tax benefit is as follows: Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (20 ) (43 ) (23 ) (35 ) State income tax, net of federal income tax benefit 3 (3 ) 2 (6 ) Income tax effect of foreign income 1 (1 ) — (2 ) Effects of ratemaking (2 ) (9 ) (2 ) (5 ) Other, net — (1 ) — — Effective income tax rate 3 % (36 )% (2 )% (27 )%
Sierra Pacific Power Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Effects of ratemaking (11 ) — (10 ) — Other — — (1 ) 1 Effective income tax rate 10 % 21 % 10 % 22 % 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.
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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Effects of ratemaking (11 ) — (10 ) — Other — — (1 ) 1 Effective income tax rate 10 % 21 % 10 % 22 %
PacifiCorp [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % State income tax, net of federal income tax benefit 3 3 3 3 Federal income tax credits (15 ) (3 ) (12 ) (4 ) Effects of ratemaking (2 ) (3 ) (2 ) (2 ) Amortization of excess deferred income taxes (2 ) (18 ) (6 ) (7 ) Other 1 (1 ) 1 — Effective income tax rate 6 % (1 )% 5 % 11 % Income tax credits relate primarily to production tax credits ("PTCs") earned by PacifiCorp's wind-powered generating facilities. Federal renewable electricity PTCs are earned as energy from qualifying wind-powered generating facilities is produced and sold and are based on a per-kilowatt hour rate pursuant to the applicable federal income tax law. Wind-powered generating facilities are eligible for the credits for 10 years from the date the qualifying generating facilities are placed in-service. Amortization of excess deferred income taxes for the nine-month periods ended September 30, 2020 and 2019 is primarily attributable to the amortization of $30 million and $49 million , respectively, of Oregon allocated excess deferred income taxes pursuant to the Oregon Renewable Adjustment Clause settlement, whereby a portion of Oregon allocated excess deferred income taxes was used to accelerate depreciation on Oregon's share of certain repowered wind facilities. 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 periods ended September 30, 2020 and 2019 , PacifiCorp made net cash payments for federal and state income tax to BHE totaling $79 million and $128 million , respectively.
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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % State income tax, net of federal income tax benefit 3 3 3 3 Federal income tax credits (15 ) (3 ) (12 ) (4 ) Effects of ratemaking (2 ) (3 ) (2 ) (2 ) Amortization of excess deferred income taxes (2 ) (18 ) (6 ) (7 ) Other 1 (1 ) 1 — Effective income tax rate 6 % (1 )% 5 % 11 %
MidAmerican Energy Company [Member]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (55 ) (35 ) (122 ) (75 ) State income tax, net of federal income tax benefit (27 ) (18 ) (29 ) (19 ) Effects of ratemaking (15 ) (7 ) (13 ) (7 ) Other, net — 1 1 (1 ) Effective income tax rate (76 )% (38 )% (142 )% (81 )% 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. Berkshire Hathaway includes BHE and subsidiaries in its United States federal and Iowa state income tax returns. Consistent with established regulatory practice, MidAmerican Energy 's provision for 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 . The timing of MidAmerican Energy'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. BHE made net cash payments for income tax to MidAmerican Energy totaling $500 million and $309 million for the nine-month periods ended September 30, 2020 and 2019 , respectively.
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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (55 ) (35 ) (122 ) (75 ) State income tax, net of federal income tax benefit (27 ) (18 ) (29 ) (19 ) Effects of ratemaking (15 ) (7 ) (13 ) (7 ) Other, net — 1 1 (1 ) Effective income tax rate (76 )% (38 )% (142 )% (81 )%
MidAmerican Funding, LLC and Subsidiaries [Domain]
Schedule of Effective Income Tax Rate Reconciliation [Line Items]
Income Tax Disclosure [Text Block]	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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (56 ) (36 ) (126 ) (78 ) State income tax, net of federal income tax benefit (27 ) (18 ) (30 ) (20 ) Effects of ratemaking (16 ) (7 ) (13 ) (7 ) Other, net — — 1 (1 ) Effective income tax rate (78 )% (40 )% (147 )% (85 )% 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. 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. BHE made net cash payments for income tax to MidAmerican Funding totaling $504 million and $313 million for the nine-month period ended September 30, 2020 and 2019 , respectively.
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, 2020 2019 2020 2019 Federal statutory income tax rate 21 % 21 % 21 % 21 % Income tax credits (56 ) (36 ) (126 ) (78 ) State income tax, net of federal income tax benefit (27 ) (18 ) (30 ) (20 ) Effects of ratemaking (16 ) (7 ) (13 ) (7 ) Other, net — — 1 (1 ) Effective income tax rate (78 )% (40 )% (147 )% (85 )%

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	9 Months Ended
	Sep. 30, 2020
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures	Foreign Operations Net periodic benefit (credit) cost for the United Kingdom pension plan included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Service cost $ 4 $ 3 $ 12 $ 11 Interest cost 10 13 30 39 Expected return on plan assets (26 ) (24 ) (76 ) (74 ) Settlement — 21 — 21 Net amortization 11 9 32 27 Net periodic benefit (credit) cost $ (1 ) $ 22 $ (2 ) $ 24 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, 2020 2019 2020 2019 Pension: Service cost $ 4 $ 4 $ 11 $ 12 Interest cost 23 27 69 82 Expected return on plan assets (35 ) (38 ) (105 ) (115 ) Net amortization 8 8 25 24 Net periodic benefit cost $ — $ 1 $ — $ 3 Other postretirement: Service cost $ 1 $ 1 $ 5 $ 6 Interest cost 6 6 16 20 Expected return on plan assets (9 ) (10 ) (25 ) (30 ) Net amortization (1 ) — (5 ) (3 ) Net periodic benefit credit $ (3 ) $ (3 ) $ (9 ) $ (7 )
PacifiCorp [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures	Net periodic benefit credit for the pension and other postretirement benefit plans included the following components (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Pension: Service cost $ — $ — $ — $ — Interest cost 9 11 27 33 Expected return on plan assets (14 ) (17 ) (42 ) (50 ) Net amortization 4 3 13 9 Net periodic benefit credit $ (1 ) $ (3 ) $ (2 ) $ (8 ) Other postretirement: Service cost $ — $ — $ 1 $ 1 Interest cost 2 3 7 9 Expected return on plan assets (3 ) (6 ) (10 ) (16 ) Net amortization — 1 — 1 Net periodic benefit credit $ (1 ) $ (2 ) $ (2 ) $ (5 )
MidAmerican Energy Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures	Net periodic benefit 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, 2020 2019 2020 2019 Pension: Service cost $ 2 $ 2 $ 4 $ 5 Interest cost 7 7 19 22 Expected return on plan assets (10 ) (10 ) (30 ) (31 ) Net amortization — — 1 — Net periodic benefit credit $ (1 ) $ (1 ) $ (6 ) $ (4 ) Other postretirement: Service cost $ 1 $ 1 $ 3 $ 4 Interest cost 2 2 5 7 Expected return on plan assets (4 ) (3 ) (10 ) (9 ) Net amortization (1 ) (1 ) (4 ) (3 ) Net periodic benefit credit $ (2 ) $ (1 ) $ (6 ) $ (1 )
Nevada Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Amounts Recognized in Balance Sheet	Amounts payable to NV Energy are included on the Consolidated Balance Sheets and consist of the following (in millions): As of September 30, December 31, 2020 2019 Qualified Pension Plan: Other long-term liabilities $ 18 $ 18 Non-Qualified Pension Plans: Other current liabilities 1 1 Other long-term liabilities 9 9 Other Postretirement Plans: Other long-term liabilities 2 2
Sierra Pacific Power Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Amounts Recognized in Balance Sheet	Amounts payable to NV Energy are included on the Balance Sheets and consist of the following (in millions): As of September 30, December 31, 2020 2019 Qualified Pension Plan: Other long-term liabilities $ 2 $ 4 Non-Qualified Pension Plans: Other current liabilities 1 1 Other long-term liabilities 7 8 Other Postretirement Plans: Other long-term liabilities 7 7

Risk Management and Hedging A_2

Risk Management and Hedging Activities (Tables) - PacifiCorp [Member]	9 Months Ended
	Sep. 30, 2020
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, 2020 Not designated as hedging contracts (1) : Commodity assets $ 44 $ 11 $ 2 $ — $ 57 Commodity liabilities (2 ) — (31 ) (33 ) (66 ) Total 42 11 (29 ) (33 ) (9 ) Total derivatives 42 11 (29 ) (33 ) (9 ) Cash collateral receivable — — 14 11 25 Total derivatives - net basis $ 42 $ 11 $ (15 ) $ (22 ) $ 16 As of December 31, 2019 Not designated as hedging contracts (1) : Commodity assets $ 15 $ 2 $ 4 $ — $ 21 Commodity liabilities (3 ) — (31 ) (50 ) (84 ) Total 12 2 (27 ) (50 ) (63 ) Total derivatives 12 2 (27 ) (50 ) (63 ) Cash collateral receivable — — 20 27 47 Total derivatives - net basis $ 12 $ 2 $ (7 ) $ (23 ) $ (16 ) (1) PacifiCorp's commodity derivatives are generally included in rates and as of September 30, 2020 and December 31, 2019 , a regulatory asset of $9 million and $62 million , respectively, was recorded related to the net derivative liability of $9 million and $63 million , respectively.
Schedule of Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Contracts	The following table reconciles the beginning and ending balances of PacifiCorp's net regulatory assets and summarizes the pre-tax gains and losses on commodity derivative contracts recognized in net regulatory assets, as well as amounts reclassified to earnings (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Beginning balance $ 68 $ 101 $ 62 $ 96 Changes in fair value (49 ) 16 (21 ) (12 ) Net gains (losses) reclassified to operating revenue 1 (11 ) 14 (27 ) Net (losses) gains reclassified to cost of fuel and energy (11 ) (25 ) (46 ) 24 Ending balance $ 9 $ 81 $ 9 $ 81
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 2020 2019 Electricity sales, net Megawatt hours (2 ) (2 ) Natural gas purchases Decatherms 102 129

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2020
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, 2020 Assets: Commodity derivatives $ 2 $ 98 $ 107 $ (35 ) $ 172 Interest rate derivatives — 1 88 — 89 Mortgage loans held for sale — 2,178 — — 2,178 Money market mutual funds (2) 1,493 — — — 1,493 Debt securities: United States government obligations 186 — — — 186 International government obligations — 5 — — 5 Corporate obligations — 75 — — 75 Municipal obligations — 4 — — 4 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 347 — — — 347 International companies 3,533 — — — 3,533 Investment funds 202 — — — 202 $ 5,763 $ 2,366 $ 195 $ (35 ) $ 8,289 Liabilities: Commodity derivatives $ — $ (106 ) $ (11 ) $ 69 $ (48 ) Interest rate derivatives (5 ) (56 ) — — (61 ) $ (5 ) $ (162 ) $ (11 ) $ 69 $ (109 ) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2019 Assets: Commodity derivatives $ — $ 45 $ 108 $ (24 ) $ 129 Interest rate derivatives — 2 14 — 16 Mortgage loans held for sale — 1,039 — — 1,039 Money market mutual funds (2) 824 — — — 824 Debt securities: United States government obligations 189 — — — 189 International government obligations — 4 — — 4 Corporate obligations — 58 — — 58 Municipal obligations — 1 — — 1 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 336 — — — 336 International companies 1,131 — — — 1,131 Investment funds 169 — — — 169 $ 2,649 $ 1,150 $ 122 $ (24 ) $ 3,897 Liabilities: Commodity derivatives $ (4 ) $ (143 ) $ (11 ) $ 103 $ (55 ) Interest rate derivatives (2 ) (19 ) — — (21 ) $ (6 ) $ (162 ) $ (11 ) $ 103 $ (76 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $34 million and $79 million as of September 30, 2020 and December 31, 2019 , respectively. (2) Amounts are included in cash and cash equivalents; other current assets; and noncurrent investments and restricted cash and investments on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value Assets and Liabilities Net Measured On Recurring Basis Unobservable Input Reconciliation	The following table reconciles the beginning and ending balances of the Company's assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods 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 (7 ) 243 (11 ) 579 Changes in fair value recognized in net regulatory assets 20 — (36 ) — Purchases 1 — 4 — Settlements 38 (233 ) 42 (505 ) Ending balance $ 96 $ 88 $ 96 $ 88 2019: Beginning balance $ 86 $ 23 $ 99 $ 10 Changes included in earnings 1 158 6 305 Changes in fair value recognized in OCI — — (1 ) — Changes in fair value recognized in net regulatory assets (17 ) — (40 ) — Purchases — — 4 — Settlements 8 (161 ) 10 (295 ) Ending balance $ 78 $ 20 $ 78 $ 20
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, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 43,154 $ 53,008 $ 39,353 $ 46,004
Nevada Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents Nevada Power's assets and liabilities recognized on the Consolidated Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Total As of September 30, 2020 Assets: Commodity derivatives $ — $ — $ 6 $ 6 Money market mutual funds (1) 142 — — 142 Investment funds 2 — — 2 $ 144 $ — $ 6 $ 150 Liabilities - commodity derivatives $ — $ — $ (6 ) $ (6 ) As of December 31, 2019 Assets: Money market mutual funds (1) $ 10 $ — $ — $ 10 Investment funds 2 — — 2 $ 12 $ — $ — $ 12 Liabilities - commodity derivatives $ — $ — $ (8 ) $ (8 ) (1) Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation	The following table reconciles the beginning and ending balances of Nevada Power's commodity derivative assets and liabilities measured at fair value on a recurring basis using significant Level 3 inputs (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Beginning balance $ (44 ) (11 ) $ (8 ) $ 3 Changes in fair value recognized in regulatory assets 13 (13 ) (31 ) (30 ) Settlements 31 6 39 9 Ending balance $ — $ (18 ) $ — $ (18 )
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, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 2,496 $ 3,210 $ 2,351 $ 2,848
PacifiCorp [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents PacifiCorp's 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, 2020 Assets: Commodity derivatives $ — $ 57 $ — $ (4 ) $ 53 Money market mutual funds (2) 587 — — — 587 Investment funds 25 — — — 25 $ 612 $ 57 $ — $ (4 ) $ 665 Liabilities - Commodity derivatives $ — $ (66 ) $ — $ 29 $ (37 ) As of December 31, 2019 Assets: Commodity derivatives $ — $ 21 $ — $ (7 ) $ 14 Money market mutual funds (2) 23 — — — 23 Investment funds 25 — — — 25 $ 48 $ 21 $ — $ (7 ) $ 62 Liabilities - Commodity derivatives $ — $ (84 ) $ — $ 54 $ (30 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $25 million and $47 million as of September 30, 2020 and December 31, 2019 , respectively. (2) Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, by Balance Sheet Grouping	PacifiCorp's long-term debt is carried at cost on the Consolidated Balance Sheets. The fair value of PacifiCorp's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of PacifiCorp's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of PacifiCorp's long-term debt (in millions): As of September 30, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 8,649 $ 10,860 $ 7,658 $ 9,280
MidAmerican Energy Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents MidAmerican Energy's financial assets and liabilities recognized on the Balance Sheets and measured at fair value on a recurring basis (in millions): Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of September 30, 2020: Assets: Commodity derivatives $ — $ 11 $ 3 $ (2 ) $ 12 Money market mutual funds (2) 194 — — — 194 Debt securities: United States government obligations 186 — — — 186 International government obligations — 5 — — 5 Corporate obligations — 75 — — 75 Municipal obligations — 4 — — 4 Agency, asset and mortgage-backed obligations — 5 — — 5 Equity securities: United States companies 347 — — — 347 International companies 8 — — — 8 Investment funds 21 — — — 21 $ 756 $ 100 $ 3 $ (2 ) $ 857 Liabilities - commodity derivatives $ — $ (3 ) $ (1 ) $ 3 $ (1 ) Input Levels for Fair Value Measurements Level 1 Level 2 Level 3 Other (1) Total As of December 31, 2019: Assets: Commodity derivatives $ — $ 2 $ 1 $ (1 ) $ 2 Money market mutual funds (2) 274 — — — 274 Debt securities: United States government obligations 189 — — — 189 International government obligations — 4 — — 4 Corporate obligations — 58 — — 58 Municipal obligations — 1 — — 1 Agency, asset and mortgage-backed obligations — 1 — — 1 Equity securities: United States companies 336 — — — 336 International companies 9 — — — 9 Investment funds 15 — — — 15 $ 823 $ 66 $ 1 $ (1 ) $ 889 Liabilities - commodity derivatives $ — $ (9 ) $ — $ 2 $ (7 ) (1) Represents netting under master netting arrangements and a net cash collateral receivable of $1 million as of September 30, 2020 and December 31, 2019 , respectively. (2) Amounts are included in cash and cash equivalents and investments and restricted investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, by Balance Sheet Grouping	MidAmerican Energy's long-term debt is carried at cost on the Balance Sheets. The fair value of MidAmerican Energy's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Energy's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Energy's long-term debt (in millions): As of September 30, 2020 As of December 31, 2019 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 7,210 $ 8,975 $ 7,208 $ 8,283
MidAmerican Funding, LLC and Subsidiaries [Domain]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, by Balance Sheet Grouping	MidAmerican Funding 's long-term debt is carried at cost on the Consolidated Financial Statements. The fair value of MidAmerican Funding 's long-term debt is a Level 2 fair value measurement and has been estimated based upon quoted market prices, where available, or at the present value of future cash flows discounted at rates consistent with comparable maturities with similar credit risks. The carrying value of MidAmerican Funding 's variable-rate long-term debt approximates fair value because of the frequent repricing of these instruments at market rates. The following table presents the carrying value and estimated fair value of MidAmerican Funding 's long-term debt (in millions): As of September 30, 2020 As of December 31, 2019 Carrying Value Fair Value Carrying Value Fair Value Long-term debt $ 7,450 $ 9,313 $ 7,448 $ 8,599
Sierra Pacific Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following table presents Sierra Pacific's assets and liabilities recognized on the 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, 2020 Assets: Commodity derivatives $ — $ — $ 2 $ 2 Money market mutual funds (1) 18 — — 18 Investment funds 1 — — 1 $ 19 $ — $ 2 $ 21 As of December 31, 2019 Assets - money market mutual funds (1) $ 25 $ — $ — $ 25 Liabilities - commodity derivatives $ — $ — $ (1 ) $ (1 ) (1) Amounts are included in cash and cash equivalents on the Balance Sheets. The fair value of these money market mutual funds approximates cost.
Fair Value, by Balance Sheet Grouping	The following table presents the carrying value and estimated fair value of Sierra Pacific's long-term debt (in millions): As of September 30, 2020 As of December 31, 2019 Carrying Fair Carrying Fair Value Value Value Value Long-term debt $ 1,164 $ 1,362 $ 1,135 $ 1,258

Revenue from Contracts with C_2

Revenue from Contracts with Customers Revenue from Contracts with Customers (Tables)	9 Months Ended
	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers Energy Products and Services The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the Company's reportable segment information included in Note 13 (in millions): For the Three-Month Period Ended 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 distribution 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 distribution 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 For the Three-Month Period Ended September 30, 2019 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 1,320 $ 651 $ 998 $ — $ — $ — $ — $ (1 ) $ 2,968 Retail gas — 61 16 — — — — — 77 Wholesale 8 56 6 — — — — (1 ) 69 Transmission and distribution 26 16 27 195 — 179 — — 443 Interstate pipeline — — — — 221 — — (25 ) 196 Other — — — — — — — — — Total Regulated 1,354 784 1,047 195 221 179 — (27 ) 3,753 Nonregulated — 9 — 9 — 5 276 161 460 Total Customer Revenue 1,354 793 1,047 204 221 184 276 134 4,213 Other revenue 13 4 7 26 5 — 53 16 124 Total $ 1,367 $ 797 $ 1,054 $ 230 $ 226 $ 184 $ 329 $ 150 $ 4,337 For the Nine-Month Period Ended September 30, 2019 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 3,613 $ 1,561 $ 2,183 $ — $ — $ — $ — $ (1 ) $ 7,356 Retail gas — 416 74 — — — — — 490 Wholesale 47 232 34 — — — — (2 ) 311 Transmission and distribution 76 47 75 634 — 514 — — 1,346 Interstate pipeline — — — — 805 — — (86 ) 719 Other — — 1 — — — — — 1 Total Regulated 3,736 2,256 2,367 634 805 514 — (89 ) 10,223 Nonregulated — 25 — 27 — 13 599 442 1,106 Total Customer Revenue 3,736 2,281 2,367 661 805 527 599 353 11,329 Other revenue 57 18 22 75 4 — 146 78 400 Total $ 3,793 $ 2,299 $ 2,389 $ 736 $ 809 $ 527 $ 745 $ 431 $ 11,729 (1) The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations. Real Estate Services The following table summarizes the Company's real estate services Customer Revenue by line of business (in millions): HomeServices Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Brokerage $ 1,449 $ 1,172 $ 3,183 $ 3,087 Franchise 23 20 54 53 Total Customer Revenue 1,472 1,192 3,237 3,140 Other revenue 270 115 591 279 Total $ 1,742 $ 1,307 $ 3,828 $ 3,419 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, 2020 , by reportable segment (in millions): Performance obligations expected to be satisfied: Less than 12 months More than 12 months Total BHE Pipeline Group $ 979 $ 5,213 $ 6,192 BHE Transmission 663 166 829 Total $ 1,642 $ 5,379 $ 7,021
Disaggregation of Revenue [Table Text Block]	Energy Products and Services The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated energy and nonregulated energy, with further disaggregation of regulated energy by line of business, including a reconciliation to the Company's reportable segment information included in Note 13 (in millions): For the Three-Month Period Ended 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 distribution 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 distribution 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 For the Three-Month Period Ended September 30, 2019 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 1,320 $ 651 $ 998 $ — $ — $ — $ — $ (1 ) $ 2,968 Retail gas — 61 16 — — — — — 77 Wholesale 8 56 6 — — — — (1 ) 69 Transmission and distribution 26 16 27 195 — 179 — — 443 Interstate pipeline — — — — 221 — — (25 ) 196 Other — — — — — — — — — Total Regulated 1,354 784 1,047 195 221 179 — (27 ) 3,753 Nonregulated — 9 — 9 — 5 276 161 460 Total Customer Revenue 1,354 793 1,047 204 221 184 276 134 4,213 Other revenue 13 4 7 26 5 — 53 16 124 Total $ 1,367 $ 797 $ 1,054 $ 230 $ 226 $ 184 $ 329 $ 150 $ 4,337 For the Nine-Month Period Ended September 30, 2019 PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Pipeline Group BHE Transmission BHE Renewables BHE and Other (1) Total Customer Revenue: Regulated: Retail electric $ 3,613 $ 1,561 $ 2,183 $ — $ — $ — $ — $ (1 ) $ 7,356 Retail gas — 416 74 — — — — — 490 Wholesale 47 232 34 — — — — (2 ) 311 Transmission and distribution 76 47 75 634 — 514 — — 1,346 Interstate pipeline — — — — 805 — — (86 ) 719 Other — — 1 — — — — — 1 Total Regulated 3,736 2,256 2,367 634 805 514 — (89 ) 10,223 Nonregulated — 25 — 27 — 13 599 442 1,106 Total Customer Revenue 3,736 2,281 2,367 661 805 527 599 353 11,329 Other revenue 57 18 22 75 4 — 146 78 400 Total $ 3,793 $ 2,299 $ 2,389 $ 736 $ 809 $ 527 $ 745 $ 431 $ 11,729
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]	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, 2020 , by reportable segment (in millions):
HomeServices [Member]
Disaggregation of Revenue [Line Items]
Disaggregation of Revenue [Table Text Block]	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, 2020 2019 2020 2019 Customer Revenue: Brokerage $ 1,449 $ 1,172 $ 3,183 $ 3,087 Franchise 23 20 54 53 Total Customer Revenue 1,472 1,192 3,237 3,140 Other revenue 270 115 591 279 Total $ 1,742 $ 1,307 $ 3,828 $ 3,419
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes PacifiCorp's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Retail: Residential $ 519 $ 478 $ 1,363 $ 1,316 Commercial 418 419 1,122 1,152 Industrial 293 306 838 887 Other retail 114 100 209 203 Total retail 1,344 1,303 3,532 3,558 Wholesale 59 8 76 47 Transmission 33 26 79 76 Other Customer Revenue 42 17 88 55 Total Customer Revenue 1,478 1,354 3,775 3,736 Other revenue 1 13 54 57 Total operating revenue $ 1,479 $ 1,367 $ 3,829 $ 3,793
Disaggregation of Revenue [Table Text Block]	The following table summarizes PacifiCorp's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Retail: Residential $ 519 $ 478 $ 1,363 $ 1,316 Commercial 418 419 1,122 1,152 Industrial 293 306 838 887 Other retail 114 100 209 203 Total retail 1,344 1,303 3,532 3,558 Wholesale 59 8 76 47 Transmission 33 26 79 76 Other Customer Revenue 42 17 88 55 Total Customer Revenue 1,478 1,354 3,775 3,736 Other revenue 1 13 54 57 Total operating revenue $ 1,479 $ 1,367 $ 3,829 $ 3,793
Nevada Power Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes Nevada Power's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Retail: Residential $ 495 $ 468 $ 993 $ 934 Commercial 127 142 317 346 Industrial 147 169 300 351 Other 3 4 8 15 Total fully bundled 772 783 1,618 1,646 Distribution only service 8 9 20 24 Total retail 780 792 1,638 1,670 Wholesale, transmission and other 21 8 48 39 Total Customer Revenue 801 800 1,686 1,709 Other revenue 7 6 20 19 Total revenue $ 808 $ 806 $ 1,706 $ 1,728
Disaggregation of Revenue [Table Text Block]	The following table summarizes Nevada Power's revenue from contracts with customers ("Customer Revenue") by customer class (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Customer Revenue: Retail: Residential $ 495 $ 468 $ 993 $ 934 Commercial 127 142 317 346 Industrial 147 169 300 351 Other 3 4 8 15 Total fully bundled 772 783 1,618 1,646 Distribution only service 8 9 20 24 Total retail 780 792 1,638 1,670 Wholesale, transmission and other 21 8 48 39 Total Customer Revenue 801 800 1,686 1,709 Other revenue 7 6 20 19 Total revenue $ 808 $ 806 $ 1,706 $ 1,728
Sierra Pacific Power Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 11 (in millions): Three-Month Periods Ended September 30, 2020 2019 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 76 $ 11 $ 87 $ 75 $ 11 $ 86 Commercial 71 3 74 80 3 83 Industrial 57 1 58 58 1 59 Other 1 — 1 2 — 2 Total fully bundled 205 15 220 215 15 230 Distribution only service 1 — 1 1 — 1 Total retail 206 15 221 216 15 231 Wholesale, transmission and other 13 — 13 16 — 16 Total Customer Revenue 219 15 234 232 15 247 Other revenue 1 — 1 — 1 1 Total revenue $ 220 $ 15 $ 235 $ 232 $ 16 $ 248 Nine-Month Periods Ended September 30, 2020 2019 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 208 $ 54 $ 262 $ 201 $ 49 $ 250 Commercial 183 20 203 188 18 206 Industrial 132 8 140 143 6 149 Other 3 — 3 5 — 5 Total fully bundled 526 82 608 537 73 610 Distribution only service 3 — 3 3 — 3 Total retail 529 82 611 540 73 613 Wholesale, transmission and other 37 — 37 44 — 44 Total Customer Revenue 566 82 648 584 73 657 Other revenue 3 1 4 2 2 4 Total revenue $ 569 $ 83 $ 652 $ 586 $ 75 $ 661
Disaggregation of Revenue [Table Text Block]	The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 11 (in millions): Three-Month Periods Ended September 30, 2020 2019 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 76 $ 11 $ 87 $ 75 $ 11 $ 86 Commercial 71 3 74 80 3 83 Industrial 57 1 58 58 1 59 Other 1 — 1 2 — 2 Total fully bundled 205 15 220 215 15 230 Distribution only service 1 — 1 1 — 1 Total retail 206 15 221 216 15 231 Wholesale, transmission and other 13 — 13 16 — 16 Total Customer Revenue 219 15 234 232 15 247 Other revenue 1 — 1 — 1 1 Total revenue $ 220 $ 15 $ 235 $ 232 $ 16 $ 248 Nine-Month Periods Ended September 30, 2020 2019 Electric Natural Gas Total Electric Natural Gas Total Customer Revenue: Retail: Residential $ 208 $ 54 $ 262 $ 201 $ 49 $ 250 Commercial 183 20 203 188 18 206 Industrial 132 8 140 143 6 149 Other 3 — 3 5 — 5 Total fully bundled 526 82 608 537 73 610 Distribution only service 3 — 3 3 — 3 Total retail 529 82 611 540 73 613 Wholesale, transmission and other 37 — 37 44 — 44 Total Customer Revenue 566 82 648 584 73 657 Other revenue 3 1 4 2 2 4 Total revenue $ 569 $ 83 $ 652 $ 586 $ 75 $ 661
MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer [Text Block]	Revenue from Contracts with Customers The following table summarizes MidAmerican Energy's revenue from contracts with customers ("Customer Revenue") by line of business and customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 10 , (in millions): For the Three-Month Period Ended 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 For the Three-Month Period Ended September 30, 2019 For the Nine-Month Period Ended September 30, 2019 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 228 $ 41 $ — $ 269 $ 547 $ 282 $ — $ 829 Commercial 101 10 — 111 255 95 — 350 Industrial 274 3 — 277 641 12 — 653 Natural gas transportation services — 7 — 7 — 27 — 27 Other retail (1) 48 — — 48 118 — — 118 Total retail 651 61 — 712 1,561 416 — 1,977 Wholesale 41 15 — 56 168 64 — 232 Multi-value transmission projects 17 — — 17 47 — — 47 Other Customer Revenue — — 8 8 — — 23 23 Total Customer Revenue 709 76 8 793 1,776 480 23 2,279 Other revenue 3 — — 3 16 2 — 18 Total operating revenue $ 712 $ 76 $ 8 $ 796 $ 1,792 $ 482 $ 23 $ 2,297 (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.
Disaggregation of Revenue [Table Text Block]	The following table summarizes MidAmerican Energy's revenue from contracts with customers ("Customer Revenue") by line of business and customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 10 , (in millions): For the Three-Month Period Ended 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 For the Three-Month Period Ended September 30, 2019 For the Nine-Month Period Ended September 30, 2019 Electric Natural Gas Other Total Electric Natural Gas Other Total Customer Revenue: Retail: Residential $ 228 $ 41 $ — $ 269 $ 547 $ 282 $ — $ 829 Commercial 101 10 — 111 255 95 — 350 Industrial 274 3 — 277 641 12 — 653 Natural gas transportation services — 7 — 7 — 27 — 27 Other retail (1) 48 — — 48 118 — — 118 Total retail 651 61 — 712 1,561 416 — 1,977 Wholesale 41 15 — 56 168 64 — 232 Multi-value transmission projects 17 — — 17 47 — — 47 Other Customer Revenue — — 8 8 — — 23 23 Total Customer Revenue 709 76 8 793 1,776 480 23 2,279 Other revenue 3 — — 3 16 2 — 18 Total operating revenue $ 712 $ 76 $ 8 $ 796 $ 1,792 $ 482 $ 23 $ 2,297

Components of Accumulated Oth_2

Components of Accumulated Other Comprehensive Loss, Net (Tables)	9 Months Ended
	Sep. 30, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Components of Accumulated Other Comprehensive Loss, Net	The following table shows the change in AOCI attributable to BHE shareholders by each component of OCI, net of applicable income tax (in millions): Unrecognized Foreign Unrealized AOCI Amounts on Currency Gains (Losses) Attributable Retirement Translation on Cash To BHE Benefits Adjustment Flow Hedges Shareholders, Net Balance, December 31, 2018 $ (358 ) $ (1,623 ) $ 36 $ (1,945 ) Other comprehensive loss (40 ) (66 ) (28 ) (134 ) Balance, September 30, 2019 $ (398 ) $ (1,689 ) $ 8 $ (2,079 ) 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 )

Segment Information (Tables)

Segment Information (Tables)	9 Months Ended
	Sep. 30, 2020
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, 2020 2019 2020 2019 Operating revenue: PacifiCorp $ 1,479 $ 1,367 $ 3,829 $ 3,793 MidAmerican Funding 812 797 2,114 2,299 NV Energy 1,042 1,054 2,359 2,389 Northern Powergrid 246 230 733 736 BHE Pipeline Group 264 226 890 809 BHE Transmission 175 184 516 527 BHE Renewables 309 329 731 745 HomeServices 1,742 1,307 3,828 3,419 BHE and Other (1) 124 150 332 431 Total operating revenue $ 6,193 $ 5,644 $ 15,332 $ 15,148 Depreciation and amortization: PacifiCorp $ 234 $ 272 $ 696 $ 686 MidAmerican Funding 179 184 530 540 NV Energy 128 121 377 361 Northern Powergrid 69 60 195 186 BHE Pipeline Group 45 28 134 85 BHE Transmission 61 59 176 177 BHE Renewables 72 71 214 210 HomeServices 11 11 34 35 BHE and Other (1) 1 — 1 (2 ) Total depreciation and amortization $ 800 $ 806 $ 2,357 $ 2,278 Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating income: PacifiCorp $ 361 $ 333 $ 851 $ 885 MidAmerican Funding 232 234 444 444 NV Energy 347 313 587 547 Northern Powergrid 106 98 327 337 BHE Pipeline Group 101 87 442 398 BHE Transmission 79 91 236 244 BHE Renewables 143 183 244 298 HomeServices 239 113 336 209 BHE and Other (1) (61 ) (2 ) (65 ) (34 ) Total operating income 1,547 1,450 3,402 3,328 Interest expense (504 ) (475 ) (1,490 ) (1,428 ) Capitalized interest 24 23 60 56 Allowance for equity funds 50 56 122 126 Interest and dividend income 17 25 57 91 Gains (losses) on marketable securities, net 1,797 (234 ) 2,407 (296 ) Other, net 36 2 61 67 Total income before income tax expense (benefit) and equity loss $ 2,967 $ 847 $ 4,619 $ 1,944 Interest expense: PacifiCorp $ 107 $ 101 $ 319 $ 299 MidAmerican Funding 79 74 238 223 NV Energy 56 55 171 173 Northern Powergrid 34 33 97 102 BHE Pipeline Group 15 14 44 38 BHE Transmission 38 40 111 118 BHE Renewables 41 44 125 132 HomeServices 1 6 9 20 BHE and Other (1) 133 108 376 323 Total interest expense $ 504 $ 475 $ 1,490 $ 1,428 Operating revenue by country: United States $ 5,773 $ 5,222 $ 14,086 $ 13,875 United Kingdom 246 229 733 734 Canada 174 183 512 526 Philippines and other — 10 1 13 Total operating revenue by country $ 6,193 $ 5,644 $ 15,332 $ 15,148 Income before income tax expense (benefit) and equity loss by country: United States $ 2,839 $ 728 $ 4,220 $ 1,546 United Kingdom 82 49 250 228 Canada 44 55 130 134 Philippines and other 2 15 19 36 Total income before income tax expense (benefit) and equity loss by country $ 2,967 $ 847 $ 4,619 $ 1,944 As of September 30, December 31, 2020 2019 Assets: PacifiCorp $ 26,686 $ 24,861 MidAmerican Funding 23,372 22,664 NV Energy 14,705 14,128 Northern Powergrid 8,491 8,385 BHE Pipeline Group 6,313 6,100 BHE Transmission 8,799 8,776 BHE Renewables 11,630 9,961 HomeServices 5,366 3,846 BHE and Other (1) 3,824 1,330 Total assets $ 109,186 $ 100,051 (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. T
Schedule of Goodwill	e following table shows the change in the carrying amount of goodwill by reportable segment for the nine-month period ended September 30, 2020 (in millions): BHE Pipeline Group PacifiCorp MidAmerican Funding NV Energy Northern Powergrid BHE Transmission BHE Renewables HomeServices Total December 31, 2019 $ 1,129 $ 2,102 $ 2,369 $ 978 $ 73 $ 1,520 $ 95 $ 1,456 $ 9,722 Foreign currency translation — — — (18 ) — (37 ) — — (55 ) September 30, 2020 $ 1,129 $ 2,102 $ 2,369 $ 960 $ 73 $ 1,483 $ 95 $ 1,456 $ 9,667
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating revenue: Regulated electric $ 728 $ 712 $ 1,717 $ 1,792 Regulated natural gas 80 76 384 482 Other 4 8 5 23 Total operating revenue $ 812 $ 796 $ 2,106 $ 2,297 Operating income: Regulated electric $ 238 $ 243 $ 398 $ 396 Regulated natural gas (6 ) (8 ) 40 45 Other — (1 ) — 2 Total operating income 232 234 438 443 Interest expense (74 ) (68 ) (224 ) (207 ) Allowance for borrowed funds 5 7 12 20 Allowance for equity funds 16 27 33 59 Other, net 14 4 30 34 Income before income tax benefit $ 193 $ 204 $ 289 $ 349 As of September 30, December 31, Assets: Regulated electric $ 19,782 $ 19,093 Regulated natural gas 1,479 1,468 Other 7 3 Total assets $ 21,268 $ 20,564
MidAmerican Funding, LLC and Subsidiaries [Domain]
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, 2020 2019 2020 2019 Operating revenue: Regulated electric $ 728 $ 712 $ 1,717 $ 1,792 Regulated natural gas 80 76 384 482 Other 4 9 13 25 Total operating revenue $ 812 $ 797 $ 2,114 $ 2,299 Operating income: Regulated electric $ 238 $ 243 $ 398 $ 396 Regulated natural gas (6 ) (8 ) 40 45 Other — (1 ) 6 3 Total operating income 232 234 444 444 Interest expense (79 ) (74 ) (238 ) (223 ) Allowance for borrowed funds 5 7 12 20 Allowance for equity funds 16 27 33 59 Other, net 15 5 30 36 Income before income tax benefit $ 189 $ 199 $ 281 $ 336 As of September 30, December 31, Assets (1) : Regulated electric $ 20,973 $ 20,284 Regulated natural gas 1,558 1,547 Other 17 9 Total assets $ 22,548 $ 21,840 (1) Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
Schedule of Segment Reporting Information, by Segment	The following tables provide information on a reportable segment basis (in millions): Three-Month Periods Nine-Month Periods Ended September 30, Ended September 30, 2020 2019 2020 2019 Operating revenue: Regulated electric $ 220 $ 232 $ 569 $ 586 Regulated natural gas 15 16 83 75 Total operating revenue $ 235 $ 248 $ 652 $ 661 Operating income: Regulated electric $ 66 $ 67 $ 119 $ 119 Regulated natural gas 2 — 12 12 Total operating income 68 67 131 131 Interest expense (14 ) (12 ) (42 ) (36 ) Allowance for borrowed funds — — 1 1 Allowance for equity funds 1 — 3 2 Other, net 3 1 7 4 Income before income tax expense $ 58 $ 56 $ 100 $ 102 As of September 30, December 31, 2020 2019 Assets: Regulated electric $ 3,515 $ 3,319 Regulated natural gas 318 308 Other (1) 36 44 Total assets $ 3,869 $ 3,671 (1) Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

General (Details)

General (Details)	9 Months Ended
	Sep. 30, 2020OperatingSegmentsOwnedAndOperatedCompanies
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Number of reportable segments | OperatingSegments	8
Number of owned and operated utility companies in the United States	4
Number of states owned and operated utility companies serve customers	11
Number of owned and operated interstate natural gas pipeline companies in the United States	2
Number of owned and operated electricity distribution companies in Great Britain	2
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

Business Combination Disclosu_2

Business Combination Disclosure Business Combination Disclosure (Details) - Subsequent Event [Member] $ in Millions	Nov. 01, 2020USD ($)miBcf	Oct. 29, 2020USD ($)	Oct. 05, 2020USD ($)
Natural Gas Transmission and Storage Transaction [Member]
Business Acquisition [Line Items]
Miles of natural gas transmission lines | mi	5,700
Natural gas transmission lines transportation per day capacity | Bcf	13.9
Natural gas operated storage capacity | Bcf	733
Natural gas company-owned working storage capacity | Bcf	299
Liquefied natural gas storage capacity | Bcf	14.6
Payments to Acquire Businesses, Gross	$ 2,700
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt	$ 5,300
Natural Gas Transmission and Storage Transaction [Member] | Iroquois Gas Transmission System L.P. [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	50.00%
Natural Gas Transmission and Storage Transaction [Member] | Cove Point LNG, LP [Member]
Business Acquisition [Line Items]
Equity Method Investment, Ownership Percentage	25.00%
General Partnership Interest	100.00%
Natural Gas Transmission and Storage Business Acquisition [Member]
Business Acquisition [Line Items]
Preferred Stock, Value, Issued		$ 3,750
Preferred Stock, Dividend Rate, Percentage		4.00%
Natural Gas Transmission and Storage Business Acquisition [Member] | Forecast [Member]
Business Acquisition [Line Items]
Approval period, days following purchase agreement execution			75 days
Natural Gas Transmission and Storage Business Acquisition [Member] | Eastern Gas Transmission, Inc. [Member]
Business Acquisition [Line Items]
Ownership Percentage Acquired	100.00%
Natural Gas Transmission and Storage Business Acquisition [Member] | Carolina Gas Transmission, LLC [Member]
Business Acquisition [Line Items]
Ownership Percentage Acquired	100.00%
Questar Pipeline Group and Dominion Questar Transaction [Member] | Forecast [Member]
Business Acquisition [Line Items]
Payments to Acquire Businesses, Gross			$ 1,300
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Noncurrent Liabilities, Long-term Debt			$ 430

Property, Plant and Equipment_3

Property, Plant and Equipment, Net (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment in service, net	$ 70,120	$ 69,573
Construction in Progress, Gross	5,132	3,732
Property, plant and equipment, net	75,252	73,305
Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	91,024	89,292
Accumulated depreciation and amortization	(27,401)	(26,353)
Property, plant and equipment in service, net	63,623	62,939
Construction in Progress, Gross	5,000	3,600
Regulated Operation [Member] | Utility generation, transmission and distribution systems
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 82,743	81,127
Regulated Operation [Member] | Utility generation, transmission and distribution systems | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Regulated Operation [Member] | Utility generation, transmission and distribution systems | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	80 years
Regulated Operation [Member] | Interstate natural gas pipeline assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 8,281	8,165
Regulated Operation [Member] | Interstate natural gas pipeline assets | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	3 years
Regulated Operation [Member] | Interstate natural gas pipeline assets | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	80 years
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 8,952	8,817
Accumulated depreciation and amortization	(2,455)	(2,183)
Property, plant and equipment in service, net	6,497	6,634
Unregulated Operation [Member] | Independent power plants
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 7,002	6,983
Unregulated Operation [Member] | Independent power plants | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	5 years
Unregulated Operation [Member] | Independent power plants | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years
Unregulated Operation [Member] | Other assets
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 1,950	$ 1,834
Unregulated Operation [Member] | Other assets | Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	3 years
Unregulated Operation [Member] | Other assets | Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life	30 years

Property, Plant and Equipment_4

Property, Plant and Equipment, Net - PacifiCorp (Details) - PacifiCorp [Member] - USD ($) $ in Millions		9 Months Ended
		Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		$ 29,194	$ 28,763
Public utility accumulated depreciation and amortization		(9,886)	(9,803)
Public Utilities Property, Plant And Equipment In Service, Net		19,308	18,960
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress		19,317	18,970
Public Utilities, Property, Plant and Equipment, Construction Work in Progress		2,725	2,003
Public Utilities, Property, Plant and Equipment, Net		$ 22,042	20,973
Minimum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life		5 years
Maximum [Member]
Property, Plant and Equipment [Line Items]
Depreciable Life		75 years
Other assets
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		$ 1,483	1,449
Electricity Generation Plant, Non-Nuclear [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		12,475	12,509
Electric Transmission [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		6,687	6,482
Electric Distribution [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross		7,522	7,307
Other Intangible Assets [Member]
Property, Plant and Equipment [Line Items]
Electric Property Plant And Equipment In Service Gross	[1]	1,027	1,016
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress		9	$ 10
BHE [Member]
Property, Plant and Equipment [Line Items]
Related Party Transaction, Amounts of Transaction		$ 147
[1]	(1)Computer software costs included in intangible plant are initially assigned a depreciable life of 5 to 10 years.

Property, Plant and Equipment_5

Property, Plant and Equipment, Net Property, Plant and Equipment, Net - MEC (Details) - MidAmerican Energy Company [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 17,796	$ 17,593
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	1,253	782
Property, plant and equipment, net	19,049	18,375
Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress	24,374	23,726
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	(6,584)	(6,139)
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	17,790	17,587
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	(1)	(1)
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	6	6
Gross public utility property, plant and equipment in service	$ 7	7
Unregulated Operation [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	20 years
Unregulated Operation [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	50 years
Electric Operations [Member] | Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing	$ 15,917	15,687
Public Utilities, Property, Plant and Equipment, Transmission	2,303	2,124
Public Utilities, Property, Plant and Equipment, Distribution	$ 4,281	4,095
Electric Operations [Member] | Regulated Operation [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	20 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	52 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	20 years
Electric Operations [Member] | Regulated Operation [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	70 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	75 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	75 years
Natural Gas Processing Plant [Member] | Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution	$ 1,873	$ 1,820
Natural Gas Processing Plant [Member] | Regulated Operation [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	29 years
Natural Gas Processing Plant [Member] | Regulated Operation [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	75 years

Property, Plant and Equipment_6

Property, Plant and Equipment, Net Property, Plant and Equipment, Net - MidAmerican Funding (Details) - MidAmerican Funding, LLC and Subsidiaries [Domain] - Other assets - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 0	$ 3
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	$ 0	$ (1)

Property, Plant and Equipment_7

Property, Plant and Equipment, Net Property, Plant and Equipment, Net - NPC (Details) - Nevada Power Company [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 6,478	$ 6,343
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	165	195
Property, plant and equipment, net	6,643	6,538
Regulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing	3,612	3,541
Public Utilities, Property, Plant and Equipment, Transmission	1,455	1,444
Public Utilities, Property, Plant and Equipment, Distribution	3,738	3,567
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment	784	741
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress	9,589	9,293
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	3,112	2,951
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 6,477	6,342
Regulated Operation [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	30 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	45 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	20 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	5 years
Regulated Operation [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	55 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	70 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	65 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	65 years
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 1	$ 1
Unregulated Operation [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	45 years
Unregulated Operation [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	45 years

Property, Plant and Equipment_8

Property, Plant and Equipment, Net Property, Plant and Equipment, Net - SPPC (Details) - Sierra Pacific Power Company [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 3,002	$ 2,962
Property, plant and equipment, net	3,143	3,075
Common Facilities [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Construction Work in Progress	141	113
Property, plant and equipment, net	3,143	3,075
Regulated Operation [Member] | Electricity Generation Plant, Non-Nuclear [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation or Processing	1,129	1,133
Public Utilities, Property, Plant and Equipment, Transmission	911	840
Public Utilities, Property, Plant and Equipment, Distribution	1,724	1,669
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment	$ 187	178
Regulated Operation [Member] | Electricity Generation Plant, Non-Nuclear [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	25 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	50 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	20 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	5 years
Regulated Operation [Member] | Electricity Generation Plant, Non-Nuclear [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Generation, Useful Life	60 years
Public Utilities, Property, Plant and Equipment, Transmission, Useful Life	100 years
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	100 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	70 years
Regulated Operation [Member] | Natural Gas Processing Plant [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution	$ 424	417
Public Utilities, Property, Plant and Equipment, Other Property, Plant and Equipment	$ 14	14
Regulated Operation [Member] | Natural Gas Processing Plant [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	35 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	5 years
Regulated Operation [Member] | Natural Gas Processing Plant [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Distribution, Useful Life	70 years
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	70 years
Regulated Operation [Member] | Common Facilities [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Common	$ 344	338
Public Utilities, Property, Plant and Equipment, Plant in Service, Excluding Construction Work In Progress	4,733	4,589
Public Utilities, Property, Plant and Equipment, Accumulated Depreciation	1,733	1,629
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 3,000	2,960
Regulated Operation [Member] | Common Facilities [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Common, Useful Life	5 years
Regulated Operation [Member] | Common Facilities [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Common, Useful Life	70 years
Unregulated Operation [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Net, Excluding Construction Work In Progress	$ 2	$ 2
Unregulated Operation [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	70 years
Unregulated Operation [Member] | Maximum [Member]
Property, Plant and Equipment [Line Items]
Public Utilities, Property, Plant and Equipment, Other Property Plant and Equipment, Useful Life	70 years

Investments and Restricted Ca_3

Investments and Restricted Cash and Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Investments [Abstract]
Investments	$ 4,142		$ 4,142		$ 1,719
Equity Method Investments [Abstract]
Equity Method Investments	5,843		5,843		3,947
Restricted Cash and Investments [Abstract]
Restricted cash and investments	958		958		829
Investments, including equity method investments and restricted cash and investments	10,943		10,943		6,495
Investments, including equity method investments and restricted cash and investments, current	340		340		240
Investments, including equity method investments and restricted cash and investments, noncurrent	10,603		10,603		6,255
Gain on Sale of Investments	1,797	$ (234)	2,407	$ (296)
Marketable Securities, Realized Gain (Loss)	3	2	4	1
Marketable Securities, Gain (Loss)	1,794	$ (236)	2,403	$ (297)
Quad Cities Station nuclear decommissioning trust funds [Member]
Restricted Cash and Investments [Abstract]
Decommissioning fund investments, fair value	631		631		599
Other restricted cash and investments [Member]
Restricted Cash and Investments [Abstract]
Restricted cash and investments	327		327		230
Equity Method Investments, tax equity investments [Member]
Equity Method Investments [Abstract]
Equity Method Investments	5,000		5,000		3,130
ETT [Member]
Equity Method Investments [Abstract]
Equity Method Investments	597		597		555
Bridger Coal Company [Member]
Equity Method Investments [Abstract]
Equity Method Investments	78		78		81
Other equity method investments [Member]
Equity Method Investments [Abstract]
Equity Method Investments	168		168		181
BYD Company Limited common stock [Member]
Investments [Abstract]
Available-for-sale securities, equity securities	3,525		3,525		1,122
Rabbi trusts [Member]
Investments [Abstract]
Rabbi trusts, amount	412		412		410
Other investments [Member]
Investments [Abstract]
Other investments	$ 205		$ 205		$ 187

Regulatory Matters Regulatory M

Regulatory Matters Regulatory Matters - NPC (Details) - Nevada Power Company [Member] - General Rate Case [Member] - Public Utilities Commission, Nevada [Member] - USD ($) $ in Millions	1 Months Ended
	Oct. 31, 2020	Sep. 30, 2020	Jun. 30, 2020
Schedule Of Regulatory Assets and Liabilities [Line Items]
Public Utilities, Interim Rate increase (Decrease), Amount			$ 96
Public Utilities, Requested Rate Increase (Decrease), Amount			$ 120
Public Utilities, Approved Rate Increase (Decrease), Amount		$ 93
Subsequent Event [Member]
Schedule Of Regulatory Assets and Liabilities [Line Items]
Public Utilities, Approved Bill Credit, Amount	$ 120

Regulatory Matters Regulatory_2

Regulatory Matters Regulatory Matters - SPPC (Details) - Sierra Pacific Power Company [Member] - General Rate Case [Member] - Public Utilities Commission, Nevada [Member] - USD ($) $ in Millions	1 Months Ended
	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019
Schedule Of Regulatory Assets and Liabilities [Line Items]
Public Utilities, Interim Rate increase (Decrease), Amount	$ 3			$ (5)
Public Utilities, Requested Rate Increase (Decrease), Amount				$ 5
Public Utilities, Approved Rate Increase (Decrease), Amount	$ 2	$ 3	$ 5
Public Utilities, Revenue Sharing, Percent			50.00%
Public Utilities, Approved Return on Equity, Percentage			9.70%

Cash and Cash Equivalents and_4

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,769	$ 1,040
Restricted cash and cash equivalents	309	212
Restricted Cash and Cash Equivalents, Noncurrent	18	16
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 2,096	$ 1,268	$ 1,406	$ 883

Cash and Cash Equivalents and_5

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosures - MEC (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,769	$ 1,040
Restricted cash and cash equivalents	309	212
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,096	1,268	$ 1,406	$ 883
MidAmerican Energy Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	188	287
Restricted cash and cash equivalents	11	43
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 199	$ 330	$ 84	$ 56

Cash and Cash Equivalents and_6

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosures - LLC (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,769	$ 1,040
Restricted cash and cash equivalents	309	212
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,096	1,268	$ 1,406	$ 883
MidAmerican Funding, LLC and Subsidiaries [Domain]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	193	288
Restricted cash and cash equivalents	11	43
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 204	$ 331	$ 85	$ 57

Cash and Cash Equivalents and_7

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure - Pacificorp (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,769	$ 1,040
Restricted cash and cash equivalents	309	212
Restricted Cash and Cash Equivalents, Noncurrent	18	16
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,096	1,268	$ 1,406	$ 883
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	590	30
Restricted cash and cash equivalents	4	4
Restricted Cash and Cash Equivalents, Noncurrent	3	2
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 597	$ 36	$ 352	$ 92

Cash and Cash Equivalents and_8

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure - NPC (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,769	$ 1,040
Restricted cash and cash equivalents	309	212
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,096	1,268	$ 1,406	$ 883
Nevada Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	152	15
Restricted cash and cash equivalents	8	10
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 160	$ 25	$ 284	$ 121

Cash and Cash Equivalents and_9

Cash and Cash Equivalents and Restricted Cash and Cash Equivalents Supplemental Cash Flow Disclosure - SPPC (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2018
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	$ 1,769	$ 1,040
Restricted cash and cash equivalents	309	212
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	2,096	1,268	$ 1,406	$ 883
Sierra Pacific Power Company [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents	22	27
Restricted cash and cash equivalents	4	5
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents	$ 26	$ 32	$ 68	$ 76

Recent Financing Transactions R

Recent Financing Transactions Recent Financing Transactions - Long-Term Debt (Details) £ in Millions, $ in Millions, $ in Millions	Oct. 29, 2020USD ($)	Sep. 30, 2020CAD ($)	Sep. 30, 2020GBP (£)	Apr. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Jan. 31, 2020USD ($)	Jan. 01, 2020USD ($)
Berkshire Hathaway Energy [Member] | Senior Notes, 1.650%, due 2031 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 500
Debt Instrument, Interest Rate, Stated Percentage	1.65%
Berkshire Hathaway Energy [Member] | Senior Notes, 2.850%, due 2051 [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 1,500
Debt Instrument, Interest Rate, Stated Percentage	2.85%
Berkshire Hathaway Energy [Member] | Senior Notes, 4.05%, due 2025 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 1,250
Debt Instrument, Interest Rate, Stated Percentage					4.05%
Berkshire Hathaway Energy [Member] | Senior Notes, 3.70%, due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 1,100
Debt Instrument, Interest Rate, Stated Percentage					3.70%
Berkshire Hathaway Energy [Member] | Senior Notes, 4.25%, due 2050 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount					$ 900
Debt Instrument, Interest Rate, Stated Percentage					4.25%
Subsidiary Debt [Member] | AltaLink, L.P. [Member] | Senior Secured Notes, 1.509%, due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 225
Debt Instrument, Interest Rate, Stated Percentage		1.509%	1.509%
Subsidiary Debt [Member] | Northern Powergrid Holdings [Member] | Green Bonds, 1.875%, due 2062 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount | £			£ 300
Debt Instrument, Interest Rate, Stated Percentage		1.875%	1.875%
Subsidiary Debt [Member] | PacifiCorp [Member] | First Mortgage Bonds, 2.70%, due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 400
Debt Instrument, Interest Rate, Stated Percentage				2.70%
Subsidiary Debt [Member] | PacifiCorp [Member] | First Mortgage Bonds, 3.30%, due 2051 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount				$ 600
Debt Instrument, Interest Rate, Stated Percentage				3.30%
Subsidiary Debt [Member] | BHE Renewables [Member] | Pinyon Pines I and II Term Loan, due 2034 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 382
Long-term Debt, Percentage Bearing Variable Interest, Percentage Rate		1.77%	1.77%
Long-term Debt, Percentage Bearing Fixed Interest, Percentage Rate		3.23%	3.23%
Subsidiary Debt [Member] | BHE Renewables [Member] | Pinyon Pines I and II Term Loan, due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Repurchased Face Amount						284
Subsidiary Debt [Member] | NVE Holdings [Member] | Nevada Power Company [Member] | Mortgage Securities, 2.400%, Series DD due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 425	$ 425
Debt Instrument, Interest Rate, Stated Percentage						2.40%	2.40%
Subsidiary Debt [Member] | NVE Holdings [Member] | Nevada Power Company [Member] | Mortgage Securities, 3.125%, Series EE due 2050 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 300	$ 300
Debt Instrument, Interest Rate, Stated Percentage						3.125%	3.125%
Subsidiary Debt [Member] | NVE Holdings [Member] | Nevada Power Company [Member] | Mortgage Securities, 2.750%, Series BB due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount						$ 575	$ 575
Debt Instrument, Interest Rate, Stated Percentage						2.75%	2.75%
Dominion Energy Gas Holdings, LLC [Member] | Forecast [Member] | Dominion Energy Gas Holdings, LLC [Member] | Subsequent Event [Member]
Debt Instrument [Line Items]
Debt Instrument, Repurchase Amount	$ 1,200

Recent Financing Transactions_2

Recent Financing Transactions Recent Financings Transactions - Credit Facilities (Details) - Line of Credit [Member] $ in Millions, $ in Millions	May 31, 2020USD ($)	Apr. 30, 2020CAD ($)
AltaLink, L.P. [Member] | Revolving credit facility, C$100 million, expiring April 2021 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 100
Debt To Capitalization Ratio		0.75
AltaLink Investments, L.P. [Member] | Revolving term credit facility, C$200 million, expiring April 2021 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 200
Debt To Capitalization Ratio		0.80
MidAmerican Energy Company [Member] | Unsecured credit facility, $400 million, expiring August 2020 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 400
MidAmerican Energy Company [Member] | Unsecured credit facility, $600 million, expiring May 2021 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 600
Debt To Capitalization Ratio	0.65

Recent Financing Transactions_3

Recent Financing Transactions Recent Financing Transactions - PAC (Details) - PacifiCorp [Member] - Subsidiary Debt [Member] $ in Millions	Apr. 30, 2020USD ($)
First Mortgage Bonds, 2.70%, due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 400
Debt Instrument, Interest Rate, Stated Percentage	2.70%
First Mortgage Bonds, 3.30%, due 2051 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 600
Debt Instrument, Interest Rate, Stated Percentage	3.30%

Recent Financing Transactions_4

Recent Financing Transactions Recent Financing Transactions - MEC (Details) - MidAmerican Energy Company [Member] - Line of Credit [Member] $ in Millions	May 31, 2020USD ($)
Unsecured credit facility, $400 million, expiring August 2020 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 400
Unsecured credit facility, $600 million, expiring May 2021 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 600
Debt To Capitalization Ratio	0.65

Recent Financing Transactions_5

Recent Financing Transactions Recent Financing Transactions - NPC (Details) - NVE Holdings [Member] - Nevada Power Company [Member] - Subsidiary Debt [Member] - USD ($) $ in Millions	May 01, 2020	Jan. 31, 2020	Jan. 01, 2020
NPC Pollution Control Refunding Revenue Bonds, 1.875%, Series 2017A, due 2032 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 40
Debt Instrument, Interest Rate, Stated Percentage	1.875%
NPC Pollution Control Refunding Revenue Bonds, 1.65%, Series 2017B, due 2039 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 13
Debt Instrument, Interest Rate, Stated Percentage	1.65%
NPC Pollution Control Refunding Revenue Bonds, 1.65%, Series 2017, Due 2036 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 40
Debt Instrument, Interest Rate, Stated Percentage	1.65%
Mortgage Securities, 2.400%, Series DD due 2030 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 425	$ 425
Debt Instrument, Interest Rate, Stated Percentage		2.40%	2.40%
Mortgage Securities, 3.125%, Series EE due 2050 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 300	$ 300
Debt Instrument, Interest Rate, Stated Percentage		3.125%	3.125%
Mortgage Securities, 2.750%, Series BB due 2020 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 575	$ 575
Debt Instrument, Interest Rate, Stated Percentage		2.75%	2.75%

Recent Financing Transactions_6

Recent Financing Transactions Recent Financing Transactions - SPPC (Details) - NVE Holdings [Member] - Sierra Pacific Power Company [Member] - Subsidiary Debt [Member] - USD ($) $ in Millions	Sep. 01, 2020	Apr. 01, 2020
Water facilities refunding revenue bonds, series 2016C, due 2036 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount	$ 30	$ 30
Debt Instrument, Interest Rate, Stated Percentage	0.625%
Gas facilities refunding revenue bonds, series 2016A, due 2031 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		59
Pollution Control Refunding Revenue Bonds, Series 2016A, due 2029 [Member]
Debt Instrument [Line Items]
Debt Instrument, Face Amount		$ 20

Income Taxes (Details)

Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(20.00%)	(43.00%)	(23.00%)	(35.00%)
State income tax, net of federal income tax benefit	3.00%	(3.00%)	2.00%	(6.00%)
Income tax effect of foreign income	1.00%	(1.00%)	(0.00%)	(2.00%)
Effects of ratemaking	(2.00%)	(9.00%)	(2.00%)	(5.00%)
Other, net	(0.00%)	(1.00%)	(0.00%)	(0.00%)
Effective income tax rate	3.00%	(36.00%)	(2.00%)	(27.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
Related Party Tax Expense [Abstract]
Long-term income tax receivable	$ 530		$ 530		$ 530
Parent Company [Member]
Related Party Tax Expense [Abstract]
Related party transaction, cash paid for income taxes, net			$ 1,031	$ 534
UNITED KINGDOM
Production Tax Credit Carryforwards [Abstract]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Amount	$ 35
Corporate Income Tax Rate, Effective April 1, 2020 [Member] | UNITED KINGDOM
Production Tax Credit Carryforwards [Abstract]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%
Corporate Income Tax Rate, Effective April 1, 2020 further reduction [Member] | UNITED KINGDOM
Production Tax Credit Carryforwards [Abstract]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent	0.00%

Income Taxes - PAC (Details)

Income Taxes - PAC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
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 benefit	(3.00%)	3.00%	(2.00%)	6.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(20.00%)	(43.00%)	(23.00%)	(35.00%)
Effects of ratemaking	(2.00%)	(9.00%)	(2.00%)	(5.00%)
Other, net	0.00%	1.00%	0.00%	0.00%
Effective income tax rate	(3.00%)	36.00%	2.00%	27.00%
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
PacifiCorp [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
State income tax, net of federal income tax benefit	3.00%	3.00%	3.00%	3.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(15.00%)	(3.00%)	(12.00%)	(4.00%)
Effects of ratemaking	(2.00%)	(3.00%)	(2.00%)	(2.00%)
Effective Income Tax Rate Reconciliation, Amortization of excess deferred income taxes	(2.00%)	(18.00%)	(6.00%)	(7.00%)
Other, net	1.00%	(1.00%)	1.00%	0.00%
Effective income tax rate	6.00%	(1.00%)	5.00%	11.00%
Effective income tax reconciliation, Amortization of excess deferred income taxes, Dollar			$ 30	$ 49
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
BHE [Member] | PacifiCorp [Member]
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash paid for income taxes, net			$ 79	$ 128

Income Taxes - MEC (Details)

Income Taxes - MEC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(20.00%)	(43.00%)	(23.00%)	(35.00%)
State income tax, net of federal income tax benefit	3.00%	(3.00%)	2.00%	(6.00%)
Effects of ratemaking	(2.00%)	(9.00%)	(2.00%)	(5.00%)
Other, net	(0.00%)	(1.00%)	(0.00%)	(0.00%)
Effective income tax rate	(3.00%)	36.00%	2.00%	27.00%
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
MidAmerican Energy Company [Member]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(55.00%)	(35.00%)	(122.00%)	(75.00%)
State income tax, net of federal income tax benefit	(27.00%)	(18.00%)	(29.00%)	(19.00%)
Effects of ratemaking	(15.00%)	(7.00%)	(13.00%)	(7.00%)
Other, net	(0.00%)	1.00%	1.00%	(1.00%)
Effective income tax rate	(76.00%)	(38.00%)	(142.00%)	(81.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
MidAmerican Energy Company [Member] | Berkshire Hathaway Energy [Member]
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash (paid) received for income taxes, net			$ 500	$ 309

Income Taxes - MidAmerican Fund

Income Taxes - MidAmerican Funding (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(20.00%)	(43.00%)	(23.00%)	(35.00%)
State income tax, net of federal income tax benefit	3.00%	(3.00%)	2.00%	(6.00%)
Effects of ratemaking	(2.00%)	(9.00%)	(2.00%)	(5.00%)
Other, net	(0.00%)	(1.00%)	(0.00%)	(0.00%)
Effective income tax rate	(3.00%)	36.00%	2.00%	27.00%
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
MidAmerican Funding, LLC and Subsidiaries [Domain]
Effective Income Tax Rate, Continuing Operations, Tax Rate Reconciliation [Abstract]
Federal statutory income tax rate	21.00%	21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Credit, Percent	(56.00%)	(36.00%)	(126.00%)	(78.00%)
State income tax, net of federal income tax benefit	(27.00%)	(18.00%)	(30.00%)	(20.00%)
Effects of ratemaking	(16.00%)	(7.00%)	(13.00%)	(7.00%)
Other, net	(0.00%)	(0.00%)	1.00%	(1.00%)
Effective income tax rate	(78.00%)	(40.00%)	(147.00%)	(85.00%)
Production Tax Credit Carryforwards [Abstract]
Years eligible for federal renewable energy production tax credit			10 years
MidAmerican Funding, LLC and Subsidiaries [Domain] | Berkshire Hathaway Energy [Member]
Related Party Income Tax Receivable (Payable) [Abstract]
Related party transaction, cash (paid) received for income taxes, net			$ 504	$ 313

Income Taxes Income Taxes - SPP

Income Taxes Income Taxes - SPPC (Details)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
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	(2.00%)	(9.00%)	(2.00%)	(5.00%)
Other, net	0.00%	1.00%	0.00%	0.00%
Effective income tax rate	(3.00%)	36.00%	2.00%	27.00%
Sierra Pacific Power Company [Member]
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	11.00%	(0.00%)	10.00%	(0.00%)
Other, net	0.00%	0.00%	(1.00%)	1.00%
Effective income tax rate	10.00%	21.00%	10.00%	22.00%

Employee Benefit Plans (Details

Employee Benefit Plans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 5	$ 6
Interest cost	6	6	16	20
Expected return on plan assets	(9)	(10)	(25)	(30)
Net amortization	(1)	0	(5)	(3)
Net periodic benefit cost	(3)	(3)	(9)	(7)
UNITED KINGDOM | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	3	12	11
Interest cost	10	13	30	39
Expected return on plan assets	(26)	(24)	(76)	(74)
Settlement	0	21	0	21
Net amortization	11	9	32	27
Net periodic benefit cost	(1)	22	(2)	24
UNITED STATES | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4	11	12
Interest cost	23	27	69	82
Expected return on plan assets	(35)	(38)	(105)	(115)
Net amortization	8	8	25	24
Net periodic benefit cost	$ 0	$ 1	$ 0	$ 3

Employee Benefit Plans - Employ

Employee Benefit Plans - Employer Contributions (Details) - 9 months ended Sep. 30, 2020 £ in Millions, $ in Millions	USD ($)	GBP (£)	GBP (£)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 1
Employer contributions	1
UNITED STATES | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	9
UNITED KINGDOM | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year | £			£ 43
Employer contributions	$ 41	£ 32

Employee Benefit Plans Employee

Employee Benefit Plans Employee Benefit Plans - PacifiCorp (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1	$ 1	$ 5	$ 6
Interest cost	6	6	16	20
Expected return on plan assets	(9)	(10)	(25)	(30)
Net amortization	(1)	0	(5)	(3)
Net periodic benefit cost	(3)	(3)	(9)	(7)
PacifiCorp [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	1	1
Interest cost	2	3	7	9
Expected return on plan assets	(3)	(6)	(10)	(16)
Net amortization	0	1	0	1
Net periodic benefit cost	(1)	(2)	(2)	(5)
UNITED STATES | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	4	4	11	12
Interest cost	23	27	69	82
Expected return on plan assets	(35)	(38)	(105)	(115)
Net amortization	8	8	25	24
Net periodic benefit cost	0	1	0	3
UNITED STATES | PacifiCorp [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	0	0	0	0
Interest cost	9	11	27	33
Expected return on plan assets	(14)	(17)	(42)	(50)
Net amortization	4	3	13	9
Net periodic benefit cost	$ (1)	$ (3)	$ (2)	$ (8)

Employee Benefit Plans Employ_2

Employee Benefit Plans Employee Benefit Plans - PacifiCorp - Employer Contributions (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 1
Employer contributions	1
PacifiCorp [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	0
Employer contributions	0
UNITED STATES | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	9
UNITED STATES | PacifiCorp [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	4
Employer contributions	$ 3

Employee Benefit Plans - MEC (D

Employee Benefit Plans - MEC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Pension Plan [Member] | UNITED STATES
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 4	$ 4	$ 11	$ 12
Interest cost	23	27	69	82
Expected return on plan assets	(35)	(38)	(105)	(115)
Net amortization	8	8	25	24
Net periodic benefit cost	0	1	0	3
Pension Plan [Member] | UNITED STATES | MidAmerican Energy Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	2	2	4	5
Interest cost	7	7	19	22
Expected return on plan assets	(10)	(10)	(30)	(31)
Net amortization	0	0	1	0
Net periodic benefit cost	(1)	(1)	(6)	(4)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	5	6
Interest cost	6	6	16	20
Expected return on plan assets	(9)	(10)	(25)	(30)
Net amortization	(1)	0	(5)	(3)
Net periodic benefit cost	(3)	(3)	(9)	(7)
Other Postretirement Benefits Plan [Member] | MidAmerican Energy Company [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	1	1	3	4
Interest cost	2	2	5	7
Expected return on plan assets	(4)	(3)	(10)	(9)
Net amortization	(1)	(1)	(4)	(3)
Net periodic benefit cost	$ (2)	$ (1)	$ (6)	$ (1)

Employee Benefit Plans Employ_3

Employee Benefit Plans Employee Benefit Plans - MEC - Employer Contributions (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	$ 1
Employer contributions	1
MidAmerican Energy Company [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	1
Employer contributions	1
UNITED STATES | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	13
Employer contributions	9
UNITED STATES | MidAmerican Energy Company [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, expected contributions in current fiscal year	7
Employer contributions	$ 5

Employee Benefit Plans - NPC -

Employee Benefit Plans - NPC - Amounts Payable (Details) - Nevada Power Company [Member] - UNITED STATES - NV Energy, Inc. [Member] - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Other Noncurrent Liabilities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	$ 18	$ 18
Other Noncurrent Liabilities [Member] | Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	9	9
Other Noncurrent Liabilities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	2	2
Other Current Liabilities [Member] | Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Current	$ 1	$ 1

Employee Benefit Plans - SPPC -

Employee Benefit Plans - SPPC - Amounts Payable (Details) - Sierra Pacific Power Company [Member] - UNITED STATES - NV Energy, Inc. [Member] - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Other Noncurrent Liabilities [Member] | Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	$ 2	$ 4
Other Noncurrent Liabilities [Member] | Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	7	8
Other Noncurrent Liabilities [Member] | Other Postretirement Benefits Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Noncurrent	7	7
Other Current Liabilities [Member] | Other Pension Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Liability, Defined Benefit Plan, Current	$ 1	$ 1

Risk Management and Hedging A_3

Risk Management and Hedging Activities - PacifiCorp - Balance Sheet Location (Details) - PacifiCorp [Member] - Commodity derivative [Member] - USD ($) $ in Millions	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Dec. 31, 2018
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	$ (9)		$ (63)
Cash collateral, net receivable, offset against derivative positions	25		47
Derivative assets (liabilities), at fair value, net	16		(16)
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	42		12
Cash collateral, net receivable, offset against derivative positions	0		0
Derivative assets (liabilities), at fair value, net	42		12
Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	11		2
Cash collateral, net receivable, offset against derivative positions	0		0
Derivative assets (liabilities), at fair value, net	11		2
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	(29)		(27)
Cash collateral, net receivable, offset against derivative positions	14		20
Derivative assets (liabilities), at fair value, net	(15)		(7)
Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, fair value, net	(33)		(50)
Cash collateral, net receivable, offset against derivative positions	11		27
Derivative assets (liabilities), at fair value, net	(22)		(23)
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	57		21
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(66)		(84)
Derivative, fair value, net	(9)		(63)
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts	9	$ 68	62	$ 81	$ 101	$ 96
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	44		15
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(2)		(3)
Derivative, fair value, net	42		12
Not Designated as Hedging Instrument [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	11		2
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0		0
Derivative, fair value, net	11		2
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	2		4
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(31)		(31)
Derivative, fair value, net	(29)		(27)
Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	0		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(33)		(50)
Derivative, fair value, net	$ (33)		$ (50)

Risk Management and Hedging A_4

Risk Management and Hedging Activities - PacifiCorp - Not Designated as Hedging Contracts (Details) - PacifiCorp [Member] - Not Designated as Hedging Instrument [Member] - Commodity derivative [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Regulatory Assets (Liabilities), Net, Unrealized Loss (Gain), Net, on Derivative Instruments [Line Items]
Beginning balance	$ 68	$ 101	$ 62	$ 96
Changes in fair value recognized in net regulatory assets	(49)	16	(21)	(12)
Net (losses) gains reclassified to operating revenue	1	(11)	14	(27)
Net Gains (Losses) Reclassified To Cost Of Domestic Regulated Electric	(11)	(25)	(46)	24
Ending balance	$ 9	$ 81	$ 9	$ 81

Risk Management and Hedging A_5

Risk Management and Hedging Activities - PacifiCorp - Derivative Contract Volumes (Details) - PacifiCorp [Member] - Commodity derivative [Member] MWh in Millions, Dth in Millions	Sep. 30, 2020DthMWh	Dec. 31, 2019DthMWh
Electricity sales, net
Notional Amounts of Outstanding Derivative Positions [Line Items]
Derivative, Nonmonetary Notional Amount | MWh	2	2
Natural gas purchases
Notional Amounts of Outstanding Derivative Positions [Line Items]
Derivative, Nonmonetary Notional Amount | Dth	102	129

Risk Management and Hedging A_6

Risk Management and Hedging Activities - PacifiCorp - Collateral and Contingent Features (Details) - PacifiCorp [Member] - Commodity derivative [Member] - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Derivative [Line Items]
Derivative, net liability position, aggregate fair value	$ 62	$ 80
Collateral already posted, aggregate fair value	25	47
Additional collateral, aggregate fair value	$ 33	$ 27

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019	Dec. 31, 2018
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	$ (35)		$ (35)			$ (24)
Assets, fair value disclosure		8,289		8,289			3,897
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	69		69			103
Derivative liabilities		(109)		(109)			(76)
Cash collateral, net receivable, offset against derivative positions		34		34			79
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		5,763		5,763			2,649
Derivative liabilities		(5)		(5)			(6)
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,366		2,366			1,150
Derivative liabilities		(162)		(162)			(162)
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		195		195			122
Derivative liabilities		(11)		(11)			(11)
Mortgage Loans on Real Estate [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		2,178		2,178			1,039
Mortgage Loans on Real Estate [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		0		0			0
Mortgage Loans on Real Estate [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		2,178		2,178			1,039
Mortgage Loans on Real Estate [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgages Held-for-sale, Fair Value Disclosure		0		0			0
Money market mutual funds [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	1,493		1,493			824
Money market mutual funds [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	1,493		1,493			824
Money market mutual funds [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	0		0			0
Money market mutual funds [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	0		0			0
United States government obligations [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		186		186			189
United States government obligations [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		186		186			189
United States government obligations [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
United States government obligations [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
International government obligations [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		5			4
International government obligations [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
International government obligations [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		5			4
International government obligations [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
Corporate obligations [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		75		75			58
Corporate obligations [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
Corporate obligations [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		75		75			58
Corporate obligations [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
Municipal obligations [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		4		4			1
Municipal obligations [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
Municipal obligations [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		4		4			1
Municipal obligations [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
US Government-sponsored Enterprises Debt Securities [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		5			1
US Government-sponsored Enterprises Debt Securities [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
US Government-sponsored Enterprises Debt Securities [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5		5			1
US Government-sponsored Enterprises Debt Securities [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0		0			0
United States companies [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		347		347			336
United States companies [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		347		347			336
United States companies [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0		0			0
United States companies [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0		0			0
International companies [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		3,533		3,533			1,131
International companies [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		3,533		3,533			1,131
International companies [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0		0			0
International companies [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0		0			0
Investment funds [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		202		202			169
Investment funds [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		202		202			169
Investment funds [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0		0			0
Investment funds [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0		0			0
Commodity derivative [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	(35)		(35)			(24)
Derivative assets		172		172			129
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	69		69			103
Derivative liabilities		(48)		(48)			(55)
Commodity derivative [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		2		2			0
Derivative liability, fair value, gross liability including not subject to master netting arrangement		0		0			(4)
Commodity derivative [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		98		98			45
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(106)		(106)			(143)
Commodity derivative [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		107		107			108
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(11)		(11)			(11)
Interest Rate Contract [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets		89		89			16
Derivative liabilities		(61)		(61)			(21)
Interest Rate Contract [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0		0			0
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(5)		(5)			(2)
Interest Rate Contract [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		1		1			2
Derivative liability, fair value, gross liability including not subject to master netting arrangement		(56)		(56)			(19)
Interest Rate Contract [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		88		88			14
Derivative liability, fair value, gross liability including not subject to master netting arrangement		0		0			0
Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Value		96	$ 78	96	$ 78	$ 44	97	$ 86	$ 99
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings		7	(1)	11	(6)
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net		(20)	17	36	40
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		1	0	4	4
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements		(38)	(8)	(42)	(10)
Interest Rate Lock Commitments [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset (Liability), Net, Value		88	20	88	20	$ 78	$ 14	$ 23	$ 10
Fair Value, Assets and Liabilities Measured on Recurring Basis, Gain (Loss) Included in Earnings		(243)	(158)	(579)	(305)
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net		0	0	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases		0	0	0	0
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements		$ 233	$ 161	$ 505	$ 295
[1]	Represents netting under master netting arrangements and a net cash collateral receivable of $25 million and $47 million as of September 30, 2020 and December 31, 2019, respectively.
[2]	Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - Level

Fair Value Measurements - Level 3 (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Commodity derivative [Member]
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	$ 44	$ 86	$ 97	$ 99
Changes included in earnings	(7)	1	(11)	6
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)		0		1
Changes in fair value recognized in net regulatory assets	20	(17)	(36)	(40)
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	1	0	4	4
Settlements	38	8	42	10
Ending balance	96	78	96	78
Interest Rate Lock Commitments [Member]
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning balance	78	23	14	10
Changes included in earnings	243	158	579	305
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Inputs Reconciliation, Gain (Loss) Included in Other Comprehensive Income (Loss)		0		0
Changes in fair value recognized in net regulatory assets	0	0	0	0
Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset, Purchases	0	0	0	0
Settlements	(233)	(161)	(505)	(295)
Ending balance	$ 88	$ 20	$ 88	$ 20

Fair Value Measurements - Debt

Fair Value Measurements - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 43,154	$ 39,353
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 53,008	$ 46,004

Fair Value Measurements - Pacif

Fair Value Measurements - PacifiCorp (Details) - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	$ (35)	$ (24)
Assets, fair value disclosure		8,289	3,897
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	69	103
Derivative Liability		(109)	(76)
Cash collateral, net receivable, offset against derivative positions		34	79
Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		5,763	2,649
Derivative Liability		(5)	(6)
Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,366	1,150
Derivative Liability		(162)	(162)
Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		195	122
Derivative Liability		(11)	(11)
Commodity derivative [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	(35)	(24)
Derivative assets		172	129
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	69	103
Derivative Liability		(48)	(55)
Commodity derivative [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		2	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	(4)
Commodity derivative [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		98	45
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(106)	(143)
Commodity derivative [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		107	108
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(11)	(11)
Money market mutual funds [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	1,493	824
Money market mutual funds [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	1,493	824
Money market mutual funds [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	0	0
Money market mutual funds [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	0	0
Investment funds [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		202	169
Investment funds [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		202	169
Investment funds [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
Investment funds [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
PacifiCorp [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		665	62
PacifiCorp [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		612	48
PacifiCorp [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		57	21
PacifiCorp [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		0	0
PacifiCorp [Member] | Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash collateral, net receivable, offset against derivative positions		25	47
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset		(4)	(7)
Derivative assets		53	14
Derivative liability, fair value, gross asset and right to reclaim cash, offset		29	54
Derivative Liability		(37)	(30)
Cash collateral, net receivable, offset against derivative positions		25	47
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		57	21
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(66)	(84)
PacifiCorp [Member] | Commodity derivative [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	587	23
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	587	23
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
PacifiCorp [Member] | Money market mutual funds [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		25	25
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		25	25
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
PacifiCorp [Member] | Investment funds [Member] | Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		$ 0	$ 0
[1]	Represents netting under master netting arrangements and a net cash collateral receivable of $25 million and $47 million as of September 30, 2020 and December 31, 2019, respectively.
[2]	Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - Pac_2

Fair Value Measurements - PacifiCorp - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 43,154	$ 39,353
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	53,008	46,004
PacifiCorp [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	8,649	7,658
PacifiCorp [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 10,860	$ 9,280

Fair Value Measurements - MEC (

Fair Value Measurements - MEC (Details) - Recurring [Member] - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	$ (35)	$ (24)
Assets, fair value disclosure		8,289	3,897
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	69	103
Cash collateral, net receivable, offset against derivative positions		34	79
Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	1,493	824
United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		186	189
International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	4
Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		75	58
Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		4	1
US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	1
United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		347	336
International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		3,533	1,131
Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		202	169
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		5,763	2,649
Level 1 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	1,493	824
Level 1 [Member] | United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		186	189
Level 1 [Member] | International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] | Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] | Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 1 [Member] | United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		347	336
Level 1 [Member] | International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		3,533	1,131
Level 1 [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		202	169
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,366	1,150
Level 2 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	0	0
Level 2 [Member] | United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 2 [Member] | International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	4
Level 2 [Member] | Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		75	58
Level 2 [Member] | Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		4	1
Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	1
Level 2 [Member] | United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
Level 2 [Member] | International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
Level 2 [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		195	122
Level 3 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[2]	0	0
Level 3 [Member] | United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] | International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] | Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] | Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
Level 3 [Member] | United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
Level 3 [Member] | International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
Level 3 [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1]	(35)	(24)
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[1]	69	103
Commodity derivative [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		2	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	(4)
Commodity derivative [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		98	45
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(106)	(143)
Commodity derivative [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		107	108
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(11)	(11)
MidAmerican Energy Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		857	889
Cash collateral, net receivable, offset against derivative positions		1	1
MidAmerican Energy Company [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[3]	194	274
MidAmerican Energy Company [Member] | United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		186	189
MidAmerican Energy Company [Member] | International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	4
MidAmerican Energy Company [Member] | Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		75	58
MidAmerican Energy Company [Member] | Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		4	1
MidAmerican Energy Company [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	1
MidAmerican Energy Company [Member] | United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		347	336
MidAmerican Energy Company [Member] | International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		8	9
MidAmerican Energy Company [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		21	15
MidAmerican Energy Company [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		756	823
MidAmerican Energy Company [Member] | Level 1 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[3]	194	274
MidAmerican Energy Company [Member] | Level 1 [Member] | United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		186	189
MidAmerican Energy Company [Member] | Level 1 [Member] | International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 1 [Member] | Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 1 [Member] | Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 1 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 1 [Member] | United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		347	336
MidAmerican Energy Company [Member] | Level 1 [Member] | International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		8	9
MidAmerican Energy Company [Member] | Level 1 [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		21	15
MidAmerican Energy Company [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		100	66
MidAmerican Energy Company [Member] | Level 2 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[3]	0	0
MidAmerican Energy Company [Member] | Level 2 [Member] | United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 2 [Member] | International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	4
MidAmerican Energy Company [Member] | Level 2 [Member] | Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		75	58
MidAmerican Energy Company [Member] | Level 2 [Member] | Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		4	1
MidAmerican Energy Company [Member] | Level 2 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		5	1
MidAmerican Energy Company [Member] | Level 2 [Member] | United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
MidAmerican Energy Company [Member] | Level 2 [Member] | International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
MidAmerican Energy Company [Member] | Level 2 [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0
MidAmerican Energy Company [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		3	1
MidAmerican Energy Company [Member] | Level 3 [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI	[3]	0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | United States government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | International government obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | Corporate obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | Municipal obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | US Government-sponsored Enterprises Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt Securities, Available-for-sale		0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | United States companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | International companies [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0	0
MidAmerican Energy Company [Member] | Level 3 [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Equity Securities, FV-NI		0
MidAmerican Energy Company [Member] | Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		12	2
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[4]	(2)	(1)
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(1)	(7)
Derivative liability, fair value, gross asset and right to reclaim cash, offset	[4]	3	2
MidAmerican Energy Company [Member] | Commodity derivative [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
MidAmerican Energy Company [Member] | Commodity derivative [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		11	2
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(3)	(9)
MidAmerican Energy Company [Member] | Commodity derivative [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		3	1
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		$ (1)	$ 0
[1]	Represents netting under master netting arrangements and a net cash collateral receivable of $25 million and $47 million as of September 30, 2020 and December 31, 2019, respectively.
[2]	Amounts are included in cash and cash equivalents, other current assets and other assets on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
[3]	Amounts are included in cash and cash equivalents and investments and restricted investments on the Balance Sheets. The fair value of these money market mutual funds approximates cost.
[4]	Represents netting under master netting arrangements and a net cash collateral receivable of $1 million as of September 30, 2020 and December 31, 2019, respectively.

Fair Value Measurements - MEC -

Fair Value Measurements - MEC - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 43,154	$ 39,353
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	53,008	46,004
MidAmerican Energy Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	7,210	7,208
Long-term debt, fair value		$ 8,283
MidAmerican Energy Company [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 8,975

Fair Value Measurements - MidAm

Fair Value Measurements - MidAmerican Funding - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 43,154	$ 39,353
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	53,008	46,004
MidAmerican Funding, LLC and Subsidiaries [Domain]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	7,450	7,448
Long-term debt, fair value		$ 8,599
MidAmerican Funding, LLC and Subsidiaries [Domain] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 9,313

Fair Value Measurements - NPC (

Fair Value Measurements - NPC (Details) - Recurring [Member] - USD ($) $ in Millions		Sep. 30, 2020	Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		$ 8,289	$ 3,897
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		5,763	2,649
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		2,366	1,150
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		195	122
Commodity derivative [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		2	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	(4)
Commodity derivative [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		98	45
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(106)	(143)
Commodity derivative [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		107	108
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(11)	(11)
Nevada Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		150	12
Nevada Power Company [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		144	12
Nevada Power Company [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		0	0
Nevada Power Company [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure		6	0
Nevada Power Company [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	142	10
Nevada Power Company [Member] | Money market mutual funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	142	10
Nevada Power Company [Member] | Money market mutual funds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	0	0
Nevada Power Company [Member] | Money market mutual funds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	[1]	0	0
Nevada Power Company [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		2	2
Nevada Power Company [Member] | Investment funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		2	2
Nevada Power Company [Member] | Investment funds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0	0
Nevada Power Company [Member] | Investment funds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities		0	0
Nevada Power Company [Member] | Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		6
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(6)	(8)
Nevada Power Company [Member] | Commodity derivative [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
Nevada Power Company [Member] | Commodity derivative [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
Nevada Power Company [Member] | Commodity derivative [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement		6
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		$ (6)	$ (8)
[1]	Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - NPC -

Fair Value Measurements - NPC - Level 3 (Details) - Nevada Power Company [Member] - Commodity [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Fair Value, Assets (Liabilities), Net, Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ (44)	$ (11)	$ (8)	$ 3
Fair Value, Measurements with Unobservable Inputs Reconciliation, Recurring Basis, Gain (Loss) Included In Regulatory Assets and Liabilities, Net	(13)	13	31	30
Fair Value, Measurements With Unobservable Inputs Reconciliation, Recurring Basis, Assets and Liability, Net, Settlements	(31)	(6)	(39)	(9)
Ending balance	$ 0	$ (18)	$ 0	$ (18)

Fair Value Measurements - NPC_2

Fair Value Measurements - NPC - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 43,154	$ 39,353
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	53,008	46,004
Nevada Power Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	2,496	2,351
Nevada Power Company [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 3,210	$ 2,848

Fair Value Measurements Fair Va

Fair Value Measurements Fair Value Measurements - SPPC (Details) - Recurring [Member] - USD ($) $ in Millions	Sep. 30, 2020		Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	$ 8,289		$ 3,897
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	5,763		2,649
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	2,366		1,150
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	195		122
Commodity derivative [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	2		0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	0		(4)
Commodity derivative [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	98		45
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(106)		(143)
Commodity derivative [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	107		108
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	(11)		(11)
Sierra Pacific Power Company [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	21
Sierra Pacific Power Company [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	19
Sierra Pacific Power Company [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	0
Sierra Pacific Power Company [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets, fair value disclosure	2
Sierra Pacific Power Company [Member] | Money market mutual funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	18	[1]	25	[2]
Sierra Pacific Power Company [Member] | Money market mutual funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	18	[1]	25	[2]
Sierra Pacific Power Company [Member] | Money market mutual funds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	[1]	0	[2]
Sierra Pacific Power Company [Member] | Money market mutual funds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0	[1]	0	[2]
Sierra Pacific Power Company [Member] | Investment funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1
Sierra Pacific Power Company [Member] | Investment funds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	1
Sierra Pacific Power Company [Member] | Investment funds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0
Sierra Pacific Power Company [Member] | Investment funds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities	0
Sierra Pacific Power Company [Member] | Commodity derivative [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	2
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement			(1)
Sierra Pacific Power Company [Member] | Commodity derivative [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement			0
Sierra Pacific Power Company [Member] | Commodity derivative [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement			0
Sierra Pacific Power Company [Member] | Commodity derivative [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative asset, fair value, gross asset including not subject to master netting arrangement	$ 2
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement			$ (1)
[1]	Amounts are included in cash and cash equivalents on the Consolidated Balance Sheets. The fair value of these money market mutual funds approximates cost.
[2]	(1)Amounts are included in cash and cash equivalents on the Balance Sheets. The fair value of these money market mutual funds approximates cost.

Fair Value Measurements - SPPC

Fair Value Measurements - SPPC - Debt (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	$ 43,154	$ 39,353
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	53,008	46,004
Sierra Pacific Power Company [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, carrying value	1,164	1,135
Sierra Pacific Power Company [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	$ 1,362	$ 1,258

Commitments and Contingencies -

Commitments and Contingencies - Commitments (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Abstract]
Equity Method Investments	$ 5,843	$ 3,947
Property, plant and equipment, net	75,252	$ 73,305
PacifiCorp [Member] | Klamath Hydroelectric System [Member]
Property, Plant and Equipment [Abstract]
Dam removal cost limit	200
PacifiCorp [Member] | Klamath Hydroelectric System [Member] | CALIFORNIA
Property, Plant and Equipment [Abstract]
Dam removal cost limit	16
Additional dam removal costs, California bond measure	250
Capital Addition Purchase Commitments [Member] | MidAmerican Energy Company [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Purchase Obligation	274
Maintenance, service and other contracts [Member] | MidAmerican Energy Company [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Purchase Obligation	$ 75
Counterparty Bankruptcy [Member] | Topaz [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Entity Legal Form	1
Property, Plant and Equipment [Abstract]
Revenue, Performance Obligation, Description of Payment Terms	1
Counterparty Bankruptcy [Member] | Agua Caliente [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Equity Method Investment, Ownership Percentage	49.00%
Property, Plant and Equipment [Abstract]
Revenue, Performance Obligation, Description of Payment Terms	1
Easements [Member] | MidAmerican Energy Company [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Purchase Obligation	$ 102

Commitments and Contingencies C

Commitments and Contingencies Commitments and Contingencies - PacifiCorp - Hydroelectric (Details) - PacifiCorp [Member] - Klamath Hydroelectric System [Member] $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Hydroelectric [Line Items]
Dam removal cost limit	$ 200
CALIFORNIA
Hydroelectric [Line Items]
Additional dam removal costs, California bond measure	250
Dam removal cost limit	$ 16

Commitments and Contingencies_2

Commitments and Contingencies Commitments and Contingencies - MEC- Commitments (Details) - MidAmerican Energy Company [Member] $ in Millions	Sep. 30, 2020USD ($)
Capital Addition Purchase Commitments [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Purchase Obligation	$ 274
Maintenance, service and other contracts [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Purchase Obligation	75
Easements [Member]
ContractualObligationFiscalYearMaturityScheduleTable [Line Items]
Purchase Obligation	$ 102

Commitments and Contingencies_3

Commitments and Contingencies Commitments and Contingencies - MEC - Transmission Rates (Details) - MidAmerican Energy Company [Member] - Electric Transmission [Member] $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity Adder, Percentage	0.50%
Unfavorable Regulatory Action [Member]
Loss Contingencies [Line Items]
Accrued liability for estimated transmission billings refunds	$ 11
Prior to September 2016 [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	12.38%
November 2013 to February 2015 [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	10.32%
Public Utilities, Intervenor Proposed Return On Equity, Percentage	9.15%
February 2015 through May 2016 [Member]
Loss Contingencies [Line Items]
Public Utilities, Intervenor Proposed Return On Equity, Percentage	8.67%
Nov 2019 Order For Nov 2013 to Feb 2015 and Sept 2016 Forward [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	9.88%
Public Utilities, Approved Return on Equity Plus Adder, Percentage	10.38%
May 2020 Order For Nov 2013 to Feb 2015 and Sept 2016 Forward [Member]
Loss Contingencies [Line Items]
Public Utilities, Approved Return on Equity, Percentage	10.02%
Public Utilities, Approved Return on Equity Plus Adder, Percentage	10.52%

Revenue from Contracts with C_3

Revenue from Contracts with Customers Revenue from Contracts with Customers (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 4,357	$ 4,213	$ 11,190	$ 11,329
Operating revenue		6,193	5,644	15,332	15,148
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		94	124	314	400
Electricity and natural gas [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		4,451	4,337	11,504	11,729
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,478	1,354	3,775	3,736
Operating revenue		1,479	1,367	3,829	3,793
PacifiCorp [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		1	13	54	57
MidAmerican Funding [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		806	793	2,098	2,281
Operating revenue		812	797	2,114	2,299
MidAmerican Funding [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		6	4	16	18
NV Energy, Inc. [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,034	1,047	2,336	2,367
Operating revenue		1,042	1,054	2,359	2,389
NV Energy, Inc. [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		8	7	23	22
Northern Powergrid Holdings [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		214	204	650	661
Operating revenue		246	230	733	736
Northern Powergrid Holdings [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		32	26	83	75
BHE Pipeline Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		264	221	885	805
Operating revenue		264	226	890	809
BHE Pipeline Group [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		0	5	5	4
BHE Transmission [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		175	184	516	527
Operating revenue		175	184	516	527
BHE Transmission [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		0	0	0	0
BHE Renewables [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		270	276	641	599
Operating revenue		309	329	731	745
BHE Renewables [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		39	53	90	146
Berkshire Hathaway Energy And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	116	134	289	353
Operating revenue	[1],[2]	124	150	332	431
Berkshire Hathaway Energy And Other [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	[1]	8	16	43	78
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		3,927	3,753	10,109	10,223
Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		2,981	2,968	7,214	7,356
Regulated Operation [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		84	77	422	490
Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		130	69	266	311
Regulated Operation [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		455	443	1,336	1,346
Regulated Operation [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		235	196	782	719
Regulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		42	0	89	1
Regulated Operation [Member] | PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,478	1,354	3,775	3,736
Regulated Operation [Member] | PacifiCorp [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,344	1,320	3,532	3,613
Regulated Operation [Member] | PacifiCorp [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | PacifiCorp [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		59	8	76	47
Regulated Operation [Member] | PacifiCorp [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		33	26	79	76
Regulated Operation [Member] | PacifiCorp [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | PacifiCorp [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		42	0	88	0
Regulated Operation [Member] | MidAmerican Funding [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		802	784	2,085	2,256
Regulated Operation [Member] | MidAmerican Funding [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		661	651	1,539	1,561
Regulated Operation [Member] | MidAmerican Funding [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		70	61	341	416
Regulated Operation [Member] | MidAmerican Funding [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		56	56	157	232
Regulated Operation [Member] | MidAmerican Funding [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		15	16	48	47
Regulated Operation [Member] | MidAmerican Funding [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | MidAmerican Funding [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | NV Energy, Inc. [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,035	1,047	2,335	2,367
Regulated Operation [Member] | NV Energy, Inc. [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		977	998	2,144	2,183
Regulated Operation [Member] | NV Energy, Inc. [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		14	16	81	74
Regulated Operation [Member] | NV Energy, Inc. [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		14	6	34	34
Regulated Operation [Member] | NV Energy, Inc. [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		30	27	75	75
Regulated Operation [Member] | NV Energy, Inc. [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | NV Energy, Inc. [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	1	1
Regulated Operation [Member] | Northern Powergrid Holdings [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		208	195	632	634
Regulated Operation [Member] | Northern Powergrid Holdings [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | Northern Powergrid Holdings [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | Northern Powergrid Holdings [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | Northern Powergrid Holdings [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		208	195	632	634
Regulated Operation [Member] | Northern Powergrid Holdings [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | Northern Powergrid Holdings [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Pipeline Group [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		264	221	885	805
Regulated Operation [Member] | BHE Pipeline Group [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Pipeline Group [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Pipeline Group [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Pipeline Group [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Pipeline Group [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		264	221	885	805
Regulated Operation [Member] | BHE Pipeline Group [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Transmission [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		169	179	502	514
Regulated Operation [Member] | BHE Transmission [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Transmission [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Transmission [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Transmission [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		169	179	502	514
Regulated Operation [Member] | BHE Transmission [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Transmission [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Renewables [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Renewables [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Renewables [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Renewables [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Renewables [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Renewables [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | BHE Renewables [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Regulated Operation [Member] | Berkshire Hathaway Energy And Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	(29)	(27)	(105)	(89)
Regulated Operation [Member] | Berkshire Hathaway Energy And Other [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	(1)	(1)	(1)	(1)
Regulated Operation [Member] | Berkshire Hathaway Energy And Other [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	0	0	0	0
Regulated Operation [Member] | Berkshire Hathaway Energy And Other [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	1	(1)	(1)	(2)
Regulated Operation [Member] | Berkshire Hathaway Energy And Other [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	0	0	0	0
Regulated Operation [Member] | Berkshire Hathaway Energy And Other [Member] | Regulated interstate pipeline [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	(29)	(25)	(103)	(86)
Regulated Operation [Member] | Berkshire Hathaway Energy And Other [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	0	0	0	0
Unregulated Operation [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		430	460	1,081	1,106
Unregulated Operation [Member] | PacifiCorp [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Unregulated Operation [Member] | MidAmerican Funding [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		4	9	13	25
Unregulated Operation [Member] | NV Energy, Inc. [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		(1)	0	1	0
Unregulated Operation [Member] | Northern Powergrid Holdings [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		6	9	18	27
Unregulated Operation [Member] | BHE Pipeline Group [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		0	0	0	0
Unregulated Operation [Member] | BHE Transmission [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		6	5	14	13
Unregulated Operation [Member] | BHE Renewables [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		270	276	641	599
Unregulated Operation [Member] | Berkshire Hathaway Energy And Other [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	[1]	145	161	394	442
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		1,479	1,367	3,829	3,793
PacifiCorp [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue		1	13	54	57
PacifiCorp [Member] | Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,478	1,354	3,775	3,736
PacifiCorp [Member] | Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		1,344	1,303	3,532	3,558
PacifiCorp [Member] | Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		59	8	76	47
PacifiCorp [Member] | Regulated Operation [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		33	26	79	76
PacifiCorp [Member] | Regulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax		$ 42	$ 17	$ 88	$ 55
[1]	(1)The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations.
[2]	e 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.T

Revenue from Contracts with C_4

Revenue from Contracts with Customers Revenue from Contracts with Customers - Real Estate Services (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,357	$ 4,213	$ 11,190	$ 11,329
Operating revenue	6,193	5,644	15,332	15,148
Residential real estate brokerage and mortgage businesses [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,742	1,307	3,828	3,419
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	94	124	314	400
HomeServices [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,742	1,307	3,828	3,419
HomeServices [Member] | Residential real estate brokerage [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,449	1,172	3,183	3,087
HomeServices [Member] | Residential real estate brokerage and mortgage businesses [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,472	1,192	3,237	3,140
Operating revenue	1,742	1,307	3,828	3,419
HomeServices [Member] | Real estate franchise [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	23	20	54	53
HomeServices [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	$ 270	$ 115	$ 591	$ 279

Revenue from Contracts with C_5

Revenue from Contracts with Customers Revenue from Contracts with Customers - Remaining Performance Obligation (Details) $ in Millions	Sep. 30, 2020USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 7,021
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 1,642
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5,379
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
BHE Pipeline Group [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 6,192
BHE Pipeline Group [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 979
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
BHE Pipeline Group [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 5,213
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year
BHE Transmission [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 829
BHE Transmission [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-10-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 663
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	3 months
BHE Transmission [Member] | Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-01-01
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 166
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	1 year

Revenue from Contracts with C_6

Revenue from Contracts with Customers Revenue from Contracts with Customers - Remaining Performance Obligation Total (Details) $ in Millions	Sep. 30, 2020USD ($)
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 7,021
BHE Pipeline Group [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	6,192
BHE Transmission [Member]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 829

Revenue from Contracts with C_7

Revenue from Contracts with Customers Revenue from Contracts with Customers - PAC - Customer Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,357	$ 4,213	$ 11,190	$ 11,329
Operating revenue	6,193	5,644	15,332	15,148
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	94	124	314	400
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,927	3,753	10,109	10,223
Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,981	2,968	7,214	7,356
Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	130	69	266	311
Regulated Operation [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	455	443	1,336	1,346
Regulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	42	0	89	1
PacifiCorp [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1,479	1,367	3,829	3,793
PacifiCorp [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1	13	54	57
PacifiCorp [Member] | Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,478	1,354	3,775	3,736
PacifiCorp [Member] | Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,344	1,303	3,532	3,558
PacifiCorp [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	519	478	1,363	1,316
PacifiCorp [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	418	419	1,122	1,152
PacifiCorp [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	293	306	838	887
PacifiCorp [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	114	100	209	203
PacifiCorp [Member] | Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	59	8	76	47
PacifiCorp [Member] | Regulated Operation [Member] | Regulated transmission and distribution [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	33	26	79	76
PacifiCorp [Member] | Regulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 42	$ 17	$ 88	$ 55

Revenue from Contracts with C_8

Revenue from Contracts with Customers Revenue from Contracts with Customers - MEC (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2020		Sep. 30, 2019		Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,357		$ 4,213		$ 11,190	$ 11,329
Operating revenue	6,193		5,644		15,332	15,148
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	94		124		314	400
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,927		3,753		10,109	10,223
Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,981		2,968		7,214	7,356
Regulated Operation [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	84		77		422	490
Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	130		69		266	311
Regulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	42		0		89	1
MidAmerican Energy Company [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	806		793		2,090	2,279
Operating revenue	812		796		2,106	2,297
MidAmerican Energy Company [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	6		3		16	18
MidAmerican Energy Company [Member] | Regulated electric
Disaggregation of Revenue [Line Items]
Operating revenue	728		712		1,717	1,792
MidAmerican Energy Company [Member] | Regulated natural gas
Disaggregation of Revenue [Line Items]
Operating revenue	80		76		384	482
MidAmerican Energy Company [Member] | Corporate and Other [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	4		8		5	23
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated retail [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	732		712		1,881	1,977
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated retail [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	287		269		788	829
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated retail [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	112		111		313	350
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated retail [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	282		277		649	653
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated retail [Member] | Natural gas distribution, transportation-only services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8		7		26	27
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated retail [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	43	[1]	48	[1]	105	118	[1]
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	56		56		157	232
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Electricity Transmission [Member] | Multi value transmission projects [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	14		17		47	47
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	722		709		1,703	1,776
Operating revenue	728		712		1,717	1,792
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	662		651		1,540	1,561
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Regulated retail electric [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	241		228		555	547
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Regulated retail electric [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	99		101		242	255
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Regulated retail electric [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	280		274		640	641
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Regulated retail electric [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	42	[1]	48	[1]	103	118	[1]
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	46		41		116	168
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Electricity Transmission [Member] | Multi value transmission projects [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	14		17		47	47
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated electric | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	6		3		14	16
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	80		76		382	480
Operating revenue	80		76		384	482
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	70		61		341	416
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Regulated retail gas [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	46		41		233	282
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Regulated retail gas [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13		10		71	95
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Regulated retail gas [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2		3		9	12
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Regulated retail gas [Member] | Natural gas distribution, transportation-only services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8		7		26	27
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Regulated retail gas [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1	[1]	0	[1]	2	0	[1]
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Regulated wholesale [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	10		15		41	64
MidAmerican Energy Company [Member] | Regulated Operation [Member] | Regulated natural gas | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	0		0		2	2
MidAmerican Energy Company [Member] | Unregulated Operation [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4		8		5	23
MidAmerican Energy Company [Member] | Unregulated Operation [Member] | Corporate and Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4		8		5	23
Operating revenue	4		8		5	23
MidAmerican Energy Company [Member] | Unregulated Operation [Member] | Corporate and Other [Member] | Other customer revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4		8		5	23
MidAmerican Energy Company [Member] | Unregulated Operation [Member] | Corporate and Other [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	$ 0		$ 0		$ 0	$ 0
[1]	Other retail includes provisions for rate refunds, for which any actual refunds will be reflected in the applicable customer classes upon resolution of the related regulatory proceeding.

Revenue from Contracts with C_9

Revenue from Contracts with Customers Revenue from Contracts with Customers - LLC - Customer Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,357	$ 4,213	$ 11,190	$ 11,329
Unregulated Operation [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	430	460	1,081	1,106
Corporate and Other [Member] | MidAmerican Funding, LLC and Subsidiaries [Domain] | Unregulated Operation [Member] | Nonregulated products and services [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 0	$ 1	$ 8	$ 2

Revenue from Contracts with _10

Revenue from Contracts with Customers Revenue from Contracts with Customers - NPC - Customer Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,357	$ 4,213	$ 11,190	$ 11,329
Operating revenue	6,193	5,644	15,332	15,148
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	94	124	314	400
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,927	3,753	10,109	10,223
Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,981	2,968	7,214	7,356
Nevada Power Company [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	808	806	1,706	1,728
Nevada Power Company [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	7	6	20	19
Nevada Power Company [Member] | Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	801	800	1,686	1,709
Nevada Power Company [Member] | Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	780	792	1,638	1,670
Nevada Power Company [Member] | Regulated Operation [Member] | Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21	8	48	39
Nevada Power Company [Member] | Fully bundled customer [Member] | Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	772	783	1,618	1,646
Nevada Power Company [Member] | Fully bundled customer [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	495	468	993	934
Nevada Power Company [Member] | Fully bundled customer [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	127	142	317	346
Nevada Power Company [Member] | Fully bundled customer [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	147	169	300	351
Nevada Power Company [Member] | Fully bundled customer [Member] | Regulated Operation [Member] | Regulated retail electric [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3	4	8	15
Nevada Power Company [Member] | Distribution only service [Member] | Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 8	$ 9	$ 20	$ 24

Revenue from Contracts with _11

Revenue from Contracts with Customers Revenue from Contracts with Customers - SPPC - Customer Revenue (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 4,357	$ 4,213	$ 11,190	$ 11,329
Operating revenue	6,193	5,644	15,332	15,148
Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	94	124	314	400
Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,927	3,753	10,109	10,223
Regulated Operation [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,981	2,968	7,214	7,356
Regulated Operation [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	84	77	422	490
Sierra Pacific Power Company [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	235	248	652	661
Sierra Pacific Power Company [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1	1	4	4
Sierra Pacific Power Company [Member] | Regulated Electric [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	220	232	569	586
Sierra Pacific Power Company [Member] | Regulated Electric [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	1	0	3	2
Sierra Pacific Power Company [Member] | Regulated Gas [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	15	16	83	75
Sierra Pacific Power Company [Member] | Regulated Gas [Member] | Non-contracts with customer revenue [Member]
Disaggregation of Revenue [Line Items]
Operating revenue	0	1	1	2
Sierra Pacific Power Company [Member] | Regulated Operation [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	234	247	648	657
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13	16	37	44
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Regulated Electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	219	232	566	584
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Regulated Electric [Member] | Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13	16	37	44
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Regulated Gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	15	15	82	73
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Regulated Gas [Member] | Regulated wholesale, transmission and other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	220	230	608	610
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	87	86	262	250
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	74	83	203	206
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	58	59	140	149
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1	2	3	5
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Electric [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	205	215	526	537
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Electric [Member] | Regulated retail electric [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	76	75	208	201
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Electric [Member] | Regulated retail electric [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	71	80	183	188
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Electric [Member] | Regulated retail electric [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	57	58	132	143
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Electric [Member] | Regulated retail electric [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1	2	3	5
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Gas [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	15	15	82	73
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Gas [Member] | Regulated retail gas [Member] | Residential [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	11	11	54	49
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Gas [Member] | Regulated retail gas [Member] | Commercial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3	3	20	18
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Gas [Member] | Regulated retail gas [Member] | Industrial [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1	1	8	6
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled customer [Member] | Regulated Gas [Member] | Regulated retail gas [Member] | Other [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Distribution only service [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1	1	3	3
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Distribution only service [Member] | Regulated Electric [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1	1	3	3
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Distribution only service [Member] | Regulated Gas [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0	0
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled and distribution services only customer [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	221	231	611	613
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled and distribution services only customer [Member] | Regulated Electric [Member] | Regulated retail electric [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	206	216	529	540
Sierra Pacific Power Company [Member] | Regulated Operation [Member] | Fully bundled and distribution services only customer [Member] | Regulated Gas [Member] | Regulated retail gas [Member]
Disaggregation of Revenue [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 15	$ 15	$ 82	$ 73

Components of Accumulated Oth_3

Components of Accumulated Other Comprehensive Loss, Net (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance - Accumulated other comprehensive loss, net			$ (1,706)
Other comprehensive income (loss), unrecognized amounts on retirement benefits	$ (6)	$ (26)	38	$ (40)
Other comprehensive income (loss), foreign currency translation adjustment	244	(172)	(195)	(66)
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges	4	7	(20)	(28)
Other comprehensive income (loss)	242	(191)	(177)	(134)
Ending balance - Accumulated other comprehensive loss, net	(1,883)		(1,883)
Accumulated Other Comprehensive (Loss) Income, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance - unrecognized amounts on retirement benefits			(417)	(358)
Beginning balance - foreign currency translation adjustment			(1,296)	(1,623)
Beginning balance - unrealized gains (losses) on cash flow hedges			7	36
Beginning balance - Accumulated other comprehensive loss, net			(1,706)	(1,945)
Other comprehensive income (loss), unrecognized amounts on retirement benefits			38	(40)
Other comprehensive income (loss), foreign currency translation adjustment			(195)	(66)
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges			(20)	(28)
Other comprehensive income (loss)	242	(191)	(177)	(134)
Ending balance - unrecognized amounts on retirement benefits	(379)	(398)	(379)	(398)
Ending balance - foreign currency translation adjustment	(1,491)	(1,689)	(1,491)	(1,689)
Ending balance - unrealized gains (losses) on cash flow hedges	(13)	8	(13)	8
Ending balance - Accumulated other comprehensive loss, net	$ (1,883)	$ (2,079)	$ (1,883)	$ (2,079)

Components of Accumulated Oth_4

Components of Accumulated Other Comprehensive Loss, Net - MEC (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance - Accumulated other comprehensive loss, net			$ (1,706)
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges	$ 4	$ 7	(20)	$ (28)
Other comprehensive income (loss)	242	(191)	(177)	(134)
Ending balance - Accumulated other comprehensive loss, net	(1,883)		(1,883)
Accumulated Other Comprehensive (Loss) Income, Net [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance - unrealized gains (losses) on cash flow hedges			7	36
Beginning balance - Accumulated other comprehensive loss, net			(1,706)	(1,945)
Other comprehensive income (loss), unrealized gains (losses) on cash flow hedges			(20)	(28)
Other comprehensive income (loss)	242	(191)	(177)	(134)
Ending balance - unrealized gains (losses) on cash flow hedges	(13)	8	(13)	8
Ending balance - Accumulated other comprehensive loss, net	$ (1,883)	$ (2,079)	$ (1,883)	$ (2,079)

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Segment Reporting Information [Line Items]
Operating revenue		$ 6,193	$ 5,644	$ 15,332	$ 15,148
Depreciation and amortization - energy operations		(789)	(795)	(2,323)	(2,243)
Depreciation and amortization		800	806	2,357	2,278
Operating income		1,547	1,450	3,402	3,328
Interest expense		504	475	1,490	1,428
Capitalized interest		24	23	60	56
Interest Costs Capitalized				60	56
Allowance for equity funds		50	56	122	126
Interest and dividend income		17	25	57	91
Gains (losses) on marketable securities, net		1,797	(234)	2,407	(296)
Other, net		36	2	61	67
Income before income tax expense and equity income		2,967	847	4,619	1,944
Assets		109,186		109,186		$ 100,051
PacifiCorp [Member]
Segment Reporting Information [Line Items]
Operating revenue		1,479	1,367	3,829	3,793
Depreciation and amortization - energy operations		(234)	(272)	(696)	(686)
Operating income		361	333	851	885
Interest expense		107	101	319	299
Assets		26,686		26,686		24,861
MidAmerican Funding [Member]
Segment Reporting Information [Line Items]
Operating revenue		812	797	2,114	2,299
Depreciation and amortization - energy operations		(179)	(184)	(530)	(540)
Operating income		232	234	444	444
Interest expense		79	74	238	223
Assets		23,372		23,372		22,664
NV Energy, Inc. [Member]
Segment Reporting Information [Line Items]
Operating revenue		1,042	1,054	2,359	2,389
Depreciation and amortization - energy operations		(128)	(121)	(377)	(361)
Operating income		347	313	587	547
Interest expense		56	55	171	173
Assets		14,705		14,705		14,128
Northern Powergrid Holdings [Member]
Segment Reporting Information [Line Items]
Operating revenue		246	230	733	736
Depreciation and amortization - energy operations		(69)	(60)	(195)	(186)
Operating income		106	98	327	337
Interest expense		34	33	97	102
Assets		8,491		8,491		8,385
BHE Pipeline Group [Member]
Segment Reporting Information [Line Items]
Operating revenue		264	226	890	809
Depreciation and amortization - energy operations		(45)	(28)	(134)	(85)
Operating income		101	87	442	398
Interest expense		15	14	44	38
Assets		6,313		6,313		6,100
BHE Transmission [Member]
Segment Reporting Information [Line Items]
Operating revenue		175	184	516	527
Depreciation and amortization - energy operations		(61)	(59)	(176)	(177)
Operating income		79	91	236	244
Interest expense		38	40	111	118
Assets		8,799		8,799		8,776
Berkshire Hathaway Energy Renewables [Member]
Segment Reporting Information [Line Items]
Operating revenue		309	329	731	745
Depreciation and amortization - energy operations		(72)	(71)	(214)	(210)
Operating income		143	183	244	298
Interest expense		41	44	125	132
Assets		11,630		11,630		9,961
HomeServices [Member]
Segment Reporting Information [Line Items]
Operating revenue		1,742	1,307	3,828	3,419
Depreciation and amortization		11	11	34	35
Operating income		239	113	336	209
Interest expense		1	6	9	20
Assets		5,366		5,366		3,846
Berkshire Hathaway Energy And Other [Member]
Segment Reporting Information [Line Items]
Operating revenue	[1],[2]	124	150	332	431
Depreciation and amortization - energy operations	[2]	(1)	0	(1)	(2)
Operating income	[2]	(61)	(2)	(65)	(34)
Interest expense	[2]	133	108	376	323
Assets	[2]	3,824		3,824		$ 1,330
UNITED STATES
Segment Reporting Information [Line Items]
Operating revenue		5,773	5,222	14,086	13,875
Income before income tax expense and equity income		2,839	728	4,220	1,546
UNITED KINGDOM
Segment Reporting Information [Line Items]
Operating revenue		246	229	733	734
Income before income tax expense and equity income		82	49	250	228
CANADA
Segment Reporting Information [Line Items]
Operating revenue		174	183	512	526
Income before income tax expense and equity income		44	55	130	134
The Philippines and other [Member]
Segment Reporting Information [Line Items]
Operating revenue		0	10	1	13
Income before income tax expense and equity income		$ 2	$ 15	$ 19	$ 36
[1]	(1)The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations.
[2]	e 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.T

Segment Information - Goodwill

Segment Information - Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 9,722
Foreign currency translation	(55)
Ending balance	9,667
PacifiCorp [Member]
Goodwill [Roll Forward]
Beginning balance	1,129
Foreign currency translation	0
Ending balance	1,129
MidAmerican Funding [Member]
Goodwill [Roll Forward]
Beginning balance	2,102
Foreign currency translation	0
Ending balance	2,102
NV Energy, Inc. [Member]
Goodwill [Roll Forward]
Beginning balance	2,369
Foreign currency translation	0
Ending balance	2,369
Northern Powergrid Holdings [Member]
Goodwill [Roll Forward]
Beginning balance	978
Foreign currency translation	(18)
Ending balance	960
BHE Pipeline Group [Member]
Goodwill [Roll Forward]
Beginning balance	73
Foreign currency translation	0
Ending balance	73
BHE Transmission [Member]
Goodwill [Roll Forward]
Beginning balance	1,520
Foreign currency translation	(37)
Ending balance	1,483
Berkshire Hathaway Energy Renewables [Member]
Goodwill [Roll Forward]
Beginning balance	95
Foreign currency translation	0
Ending balance	95
HomeServices [Member]
Goodwill [Roll Forward]
Beginning balance	1,456
Foreign currency translation	0
Ending balance	$ 1,456

Segment Information Segment Inf

Segment Information Segment Information - MEC (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)OperatingSegmentsReportableSegments	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | OperatingSegments			8
Operating revenue	$ 6,193	$ 5,644	$ 15,332	$ 15,148
Operating income	1,547	1,450	3,402	3,328
Interest expense	(504)	(475)	(1,490)	(1,428)
Allowance for borrowed funds	24	23	60	56
Allowance for equity funds	50	56	122	126
Other, net	36	2	61	67
Income before income tax (benefit) expense and equity income	2,967	847	4,619	1,944
Assets	109,186		$ 109,186		$ 100,051
MidAmerican Energy Company [Member]
Segment Reporting Information [Line Items]
Number of reportable segments | ReportableSegments			2
Operating revenue	812	796	$ 2,106	2,297
Operating income	232	234	438	443
Interest expense	(74)	(68)	(224)	(207)
Allowance for borrowed funds	5	7	12	20
Allowance for equity funds	16	27	33	59
Other, net	14	4	30	34
Income before income tax (benefit) expense and equity income	193	204	289	349
Assets	21,268		21,268		20,564
MidAmerican Energy Company [Member] | Regulated electric
Segment Reporting Information [Line Items]
Operating revenue	728	712	1,717	1,792
Operating income	238	243	398	396
Assets	19,782		19,782		19,093
MidAmerican Energy Company [Member] | Regulated natural gas
Segment Reporting Information [Line Items]
Operating revenue	80	76	384	482
Operating income	(6)	(8)	40	45
Assets	1,479		1,479		1,468
MidAmerican Energy Company [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenue	4	8	5	23
Operating income	0	$ (1)	0	$ 2
Assets	$ 7		$ 7		$ 3

Segment Information Segment I_2

Segment Information Segment Information - MidAmerican Funding (Details) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)OperatingSegmentsReportableSegments	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | OperatingSegments				8
Operating revenue		$ 6,193	$ 5,644	$ 15,332	$ 15,148
Operating income		1,547	1,450	3,402	3,328
Interest expense		(504)	(475)	(1,490)	(1,428)
Allowance for borrowed funds		24	23	60	56
Allowance for equity funds		50	56	122	126
Other, net		36	2	61	67
Income before income tax (benefit) expense and equity income		2,967	847	4,619	1,944
Assets		109,186		$ 109,186		$ 100,051
MidAmerican Funding, LLC and Subsidiaries [Domain]
Segment Reporting Information [Line Items]
Number of reportable segments | ReportableSegments				2
Operating revenue		812	797	$ 2,114	2,299
Operating income		232	234	444	444
Interest expense		(79)	(74)	(238)	(223)
Allowance for borrowed funds		5	7	12	20
Allowance for equity funds		16	27	33	59
Other, net		15	5	30	36
Income before income tax (benefit) expense and equity income		189	199	281	336
Assets	[1]	22,548		22,548		21,840
MidAmerican Funding, LLC and Subsidiaries [Domain] | Regulated electric
Segment Reporting Information [Line Items]
Operating revenue		728	712	1,717	1,792
Operating income		238	243	398	396
Assets	[1]	20,973		20,973		20,284
MidAmerican Funding, LLC and Subsidiaries [Domain] | Regulated natural gas
Segment Reporting Information [Line Items]
Operating revenue		80	76	384	482
Operating income		(6)	(8)	40	45
Assets	[1]	1,558		1,558		1,547
MidAmerican Funding, LLC and Subsidiaries [Domain] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Operating revenue		4	9	13	25
Operating income		0	$ (1)	6	$ 3
Assets	[1]	$ 17		$ 17		$ 9
[1]	(1)Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

Segment Information Segment I_3

Segment Information Segment Information - SPPC (Details) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020USD ($)	Sep. 30, 2019USD ($)	Sep. 30, 2020USD ($)OperatingSegmentsTheNumberOfReportableSegments	Sep. 30, 2019USD ($)	Dec. 31, 2019USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | OperatingSegments				8
Operating revenue		$ 6,193	$ 5,644	$ 15,332	$ 15,148
Operating income		1,547	1,450	3,402	3,328
Interest expense		(504)	(475)	(1,490)	(1,428)
Allowance for borrowed funds		24	23	60	56
Allowance for equity funds		50	56	122	126
Other, net		36	2	61	67
Income before income tax expense and equity income		2,967	847	4,619	1,944
Assets		109,186		$ 109,186		$ 100,051
Sierra Pacific Power Company [Member]
Segment Reporting Information [Line Items]
Number of reportable segments | TheNumberOfReportableSegments				2
Operating revenue		235	248	$ 652	661
Operating income		68	67	131	131
Interest expense		(14)	(12)	(42)	(36)
Allowance for borrowed funds		0	0	1	1
Allowance for equity funds		1	0	3	2
Other, net		3	1	7	4
Income before income tax expense and equity income		58	56	100	102
Assets		3,869		3,869		3,671
Sierra Pacific Power Company [Member] | Regulated electric
Segment Reporting Information [Line Items]
Regulated Operating Revenue		220	232	569	586
Operating income		66	67	119	119
Assets		3,515		3,515		3,319
Sierra Pacific Power Company [Member] | Regulated natural gas
Segment Reporting Information [Line Items]
Regulated Operating Revenue, Gas		15	16	83	75
Operating income		2	$ 0	12	$ 12
Assets		318		318		308
Sierra Pacific Power Company [Member] | Corporate and Other [Member]
Segment Reporting Information [Line Items]
Assets	[1]	$ 36		$ 36		$ 44
[1]	(1)Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.

BHE Shareholders' Equity (Detai

BHE Shareholders' Equity (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019
Class of Stock [Line Items]
Stock Repurchased During Period, Value	$ 126	$ 293
Common Stock [Member]
Class of Stock [Line Items]
Stock Repurchased and Retired During Period, Shares	180,358	447,712
Stock Repurchased During Period, Value	$ 126	$ 293