Subsidiary Debt - Maturity Schedule (Details) $ in Millions	Dec. 31, 2018 USD ($)
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	$ 2,106
Long-term Debt, Maturities, Repayments of Principal in Year Two	2,207
Long-term Debt, Maturities, Repayments of Principal in Year Three	1,342
Long-term Debt, Maturities, Repayments of Principal in Year Four	1,788
Long-term Debt, Maturities, Repayments of Principal in Year Five	2,513
Long-term Debt, Maturities, Repayments of Principal after Year Five	27,058
Par Value	37,014
Subsidiary Debt [Member]
Debt Instrument [Line Items]
Par Value	28,263
PacifiCorp [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	352
Long-term Debt, Maturities, Repayments of Principal in Year Two	40
Long-term Debt, Maturities, Repayments of Principal in Year Three	425
Long-term Debt, Maturities, Repayments of Principal in Year Four	606
Long-term Debt, Maturities, Repayments of Principal in Year Five	450
Long-term Debt, Maturities, Repayments of Principal after Year Five	5,203
Par Value	7,076
MidAmerican Funding [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	500
Long-term Debt, Maturities, Repayments of Principal in Year Two	2
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	1
Long-term Debt, Maturities, Repayments of Principal in Year Five	315
Long-term Debt, Maturities, Repayments of Principal after Year Five	4,850
Par Value	5,668
NV Energy [Member]
Debt Instrument [Line Items]
Par Value	4,321
NV Energy [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	523
Long-term Debt, Maturities, Repayments of Principal in Year Two	913
Long-term Debt, Maturities, Repayments of Principal in Year Three	28
Long-term Debt, Maturities, Repayments of Principal in Year Four	29
Long-term Debt, Maturities, Repayments of Principal in Year Five	271
Long-term Debt, Maturities, Repayments of Principal after Year Five	2,557
Par Value	4,321
Northern Powergrid Holdings [Member]
Debt Instrument [Line Items]
Par Value	2,621	[1]
Northern Powergrid Holdings [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	80
Long-term Debt, Maturities, Repayments of Principal in Year Two	462
Long-term Debt, Maturities, Repayments of Principal in Year Three	31
Long-term Debt, Maturities, Repayments of Principal in Year Four	479
Long-term Debt, Maturities, Repayments of Principal in Year Five	33
Long-term Debt, Maturities, Repayments of Principal after Year Five	1,536
Par Value	2,621
BHE Pipeline Group [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	200
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	850
Par Value	1,050
BHE Transmission [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	148
Long-term Debt, Maturities, Repayments of Principal in Year Two	245
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	348
Long-term Debt, Maturities, Repayments of Principal in Year Five	367
Long-term Debt, Maturities, Repayments of Principal after Year Five	2,748
Par Value	3,856	[2]
BHE Renewables [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	483
Long-term Debt, Maturities, Repayments of Principal in Year Two	168
Long-term Debt, Maturities, Repayments of Principal in Year Three	175
Long-term Debt, Maturities, Repayments of Principal in Year Four	172
Long-term Debt, Maturities, Repayments of Principal in Year Five	177
Long-term Debt, Maturities, Repayments of Principal after Year Five	2,263
Par Value	3,438
HomeServices [Member] | Subsidiary Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	20
Long-term Debt, Maturities, Repayments of Principal in Year Two	27
Long-term Debt, Maturities, Repayments of Principal in Year Three	33
Long-term Debt, Maturities, Repayments of Principal in Year Four	153
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	0
Par Value	233
Berkshire Hathaway Energy [Member] | Senior Notes [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	350
Long-term Debt, Maturities, Repayments of Principal in Year Three	450
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	900
Long-term Debt, Maturities, Repayments of Principal after Year Five	6,951
Par Value	8,651
Berkshire Hathaway Energy [Member] | Junior Subordinated Debt [Member]
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months	0
Long-term Debt, Maturities, Repayments of Principal in Year Two	0
Long-term Debt, Maturities, Repayments of Principal in Year Three	0
Long-term Debt, Maturities, Repayments of Principal in Year Four	0
Long-term Debt, Maturities, Repayments of Principal in Year Five	0
Long-term Debt, Maturities, Repayments of Principal after Year Five	100
Par Value	$ 100

[1] (1)The par values for these debt instruments are denominated in sterling.

[2] ns): Par Value(1) 2018 2017AltaLink Investments, L.P.: Series 12-1 Senior Bonds, 3.674%, due 2019$147 $148 $162Series 13-1 Senior Bonds, 3.265%, due 2020147 148 161Series 15-1 Senior Bonds, 2.244%, due 2022147 146 158Total AltaLink Investments, L.P.441 442 481 AltaLink, L.P.: Series 2008-1 Notes, 5.243%, due 2018— — 159Series 2013-2 Notes, 3.621%, due 202092 92 99Series 2012-2 Notes, 2.978%, due 2022202 201 218Series 2013-4 Notes, 3.668%, due 2023366 366 397Series 2014-1 Notes, 3.399%, due 2024256 256 278Series 2016-1 Notes, 2.747%, due 2026256 255 277Series 2006-1 Notes, 5.249%, due 2036110 109 119Series 2010-1 Notes, 5.381%, due 204092 91 99Series 2010-2 Notes, 4.872%, due 2040110 109 119Series 2011-1 Notes, 4.462%, due 2041202 201 218Series 2012-1 Notes, 3.990%, due 2042385 380 412Series 2013-3 Notes, 4.922%, due 2043256 256 278Series 2014-3 Notes, 4.054%, due 2044216 215 233Series 2015-1 Notes, 4.090%, due 2045256 255 277Series 2016-2 Notes, 3.717%, due 2046330 328 356Series 2013-1 Notes, 4.446%, due 2053183 183 198Series 2014-2 Notes, 4.274%, due 206495 95 103Total AltaLink, L.P.3,407 3,392 3,840 Other: Construction Loan, 5.660%, due 20208 8 13 Total BHE Transmission$3,856 $3,842 $4,334(1)The par values for these debt instruments are denominated in Canadian dollars.