Consolidated Statements of Operations - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating revenue:
Total operating revenue	$ 19,844	$ 19,787	$ 18,614
Energy:
Cost of fuel and energy	4,586	4,769	4,518
Operations and maintenance	3,318	3,440	3,210
Depreciation and amortization	2,965	2,933	2,580
Total operating expenses	15,694	15,715	14,092
Taxes, Miscellaneous	574	573	555
Real estate	4,251	4,000	3,229
Operating income	4,150	4,072	4,522
Other income (expense):
Interest expense	(1,912)	(1,838)	(1,841)
Capitalized interest and allowance for borrowed funds	77	61	45
Allowance for equity funds	173	104	76
Other Interest and Dividend Income	117	113	111
Gain (Loss) on Investments	(288)	(538)	14
Other, net	97	(9)	(420)
Total other income (expense)	(1,736)	(2,107)	(2,015)
Income before income tax benefit and equity (loss) income	2,414	1,965	2,507
Income tax benefit	(598)	(583)	(554)
Equity income (loss)	(44)	43	(151)
Net income	2,968	2,591	2,910
Net income attributable to noncontrolling interests	18	23	40
Net income (loss) attributable to parent	2,950	2,568	2,870
Electricity and natural gas [Member]
Operating revenue:
Total operating revenue	15,371	15,573	15,171
Residential real estate brokerage and mortgage businesses [Member]
Operating revenue:
Total operating revenue	4,473	4,214	3,443
PacifiCorp [Member]
Operating revenue:
Total operating revenue	5,068	5,026	5,237
Energy:
Cost of fuel and energy	1,795	1,757	1,770
Operations and maintenance	1,048	1,038	1,034
Utilities Operating Expense, Depreciation and Amortization	954	979	796
Property and other taxes	199	201	197
Total operating costs and expenses	3,996	3,975	3,797
Operating income	1,072	1,051	1,440
Other income (expense):
Interest expense	(401)	(384)	(381)
Capitalized interest and allowance for borrowed funds	36	18	11
Allowance for equity funds	72	35	20
Investment Income, Interest and Dividend	21	15	11
Other, net	32	8	27
Total other income (expense)	(240)	(308)	(312)
Income before income tax benefit and equity (loss) income	832	743	1,128
Income tax benefit	61	5	360
Net income (loss) attributable to parent	771	738	768
MidAmerican Energy Company [Member]
Operating revenue:
Total operating revenue	2,925	3,049	2,837
Energy:
Operations and maintenance	800	811	799
Utilities Operating Expense, Depreciation and Amortization	639	609	500
Property and other taxes	126	125	119
Total operating expenses	2,377	2,498	2,294
Operating income	548	551	543
Other income (expense):
Interest expense	(281)	(227)	(214)
Capitalized interest and allowance for borrowed funds	27	20	15
Allowance for equity funds	78	53	41
Other, net	50	30	37
Total other income (expense)	(126)	(124)	(121)
Income before income tax benefit and equity (loss) income	422	427	422
Income tax benefit	(371)	(255)	(183)
Net income (loss) attributable to parent	793	682	605
MidAmerican Energy Company [Member] | Electricity, US Regulated [Member]
Operating revenue:
Total operating revenue	2,237	2,283	2,108
Energy:
Cost of fuel and energy	399	487	434
MidAmerican Energy Company [Member] | Regulated natural gas and other [Member]
Operating revenue:
Total operating revenue	688	766	729
Energy:
Cost of fuel and energy	413	466	442
MidAmerican Funding, LLC and Subsidiaries [Domain]
Operating revenue:
Total operating revenue	2,927	3,053	2,846
Energy:
Operations and maintenance	801	813	802
Utilities Operating Expense, Depreciation and Amortization	639	609	500
Property and other taxes	127	125	119
Total operating expenses	2,378	2,503	2,302
Operating income	549	550	544
Other income (expense):
Interest expense	(302)	(247)	(237)
Capitalized interest and allowance for borrowed funds	27	20	15
Allowance for equity funds	78	53	41
Other, net	52	31	9
Total other income (expense)	(145)	(143)	(172)
Income before income tax benefit and equity (loss) income	404	407	372
Income tax benefit	(377)	(262)	(202)
Net income (loss) attributable to parent	781	669	574
MidAmerican Funding, LLC and Subsidiaries [Domain] | Electricity, US Regulated [Member]
Operating revenue:
Total operating revenue	2,237	2,283	2,108
Energy:
Cost of fuel and energy	399	487	434
MidAmerican Funding, LLC and Subsidiaries [Domain] | Regulated natural gas and other [Member]
Operating revenue:
Total operating revenue	690	770	738
Energy:
Cost of fuel and energy	412	469	447
Nevada Power Company [Member]
Operating revenue:
Total operating revenue	2,148	2,184	2,206
Energy:
Cost of fuel and energy	943	917	902
Operations and maintenance	324	443	391
Utilities Operating Expense, Depreciation and Amortization	357	337	308
Property and other taxes	45	41	40
Total operating expenses	1,669	1,738	1,641
Operating income	479	446	565
Other income (expense):
Interest expense	(171)	(170)	(179)
Capitalized interest and allowance for borrowed funds	3	2	1
Allowance for equity funds	5	3	1
Other, net	21	17	23
Total other income (expense)	(142)	(148)	(154)
Income before income tax benefit and equity (loss) income	337	298	411
Income tax benefit	73	72	156
Net income (loss) attributable to parent	264	226	255
Sierra Pacific Power Company [Member]
Operating revenue:
Total operating revenue	889	855	812
Energy:
Operations and maintenance	172	190	167
Utilities Operating Expense, Depreciation and Amortization	125	119	114
Property and other taxes	22	23	24
Total operating expenses	718	703	615
Operating income	171	152	197
Other income (expense):
Interest expense	(48)	(44)	(43)
Capitalized interest and allowance for borrowed funds	1	1	2
Allowance for equity funds	3	4	3
Other, net	4	9	5
Total other income (expense)	(40)	(30)	(33)
Income before income tax benefit and equity (loss) income	131	122	164
Income tax benefit	28	30	55
Net income (loss) attributable to parent	103	92	109
Sierra Pacific Power Company [Member] | Electricity, US Regulated [Member]
Operating revenue:
Total operating revenue	770	752	713
Energy:
Cost of fuel and energy	337	322	268
Sierra Pacific Power Company [Member] | Natural Gas, US Regulated [Member]
Operating revenue:
Total operating revenue	119	103	99
Energy:
Cost of fuel and energy	$ 62	$ 49	$ 42