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Subsidiary Debt - Maturity Schedule (Details)
$ in Millions
Dec. 31, 2020
USD ($)
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months $ 1,839
Long-term Debt, Maturities, Repayments of Principal in Year Two 1,848
Long-term Debt, Maturities, Repayments of Principal in Year Three 3,200
Long-term Debt, Maturities, Repayments of Principal in Year Four 2,710
Long-term Debt, Maturities, Repayments of Principal in Year Five 2,525
Long-term Debt, Maturities, Repayments of Principal after Year Five 37,637
Par Value 49,759
Subsidiary Debt [Member]  
Debt Instrument [Line Items]  
Par Value 36,108
PacifiCorp [Member] | Subsidiary Debt [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 420
Long-term Debt, Maturities, Repayments of Principal in Year Two 605
Long-term Debt, Maturities, Repayments of Principal in Year Three 449
Long-term Debt, Maturities, Repayments of Principal in Year Four 591
Long-term Debt, Maturities, Repayments of Principal in Year Five 302
Long-term Debt, Maturities, Repayments of Principal after Year Five 6,300
Par Value 8,667
MidAmerican Funding [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 315
Long-term Debt, Maturities, Repayments of Principal in Year Four 535
Long-term Debt, Maturities, Repayments of Principal in Year Five 13
Long-term Debt, Maturities, Repayments of Principal after Year Five 6,652
Par Value 7,515
NV Energy [Member]  
Debt Instrument [Line Items]  
Par Value 3,701
NV Energy [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 250
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 3,451
Par Value 3,701
Northern Powergrid Holdings [Member] | Subsidiary Debt [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 40
Long-term Debt, Maturities, Repayments of Principal in Year Two 521
Long-term Debt, Maturities, Repayments of Principal in Year Three 42
Long-term Debt, Maturities, Repayments of Principal in Year Four 44
Long-term Debt, Maturities, Repayments of Principal in Year Five 319
Long-term Debt, Maturities, Repayments of Principal after Year Five 2,319
Par Value 3,285 [1]
BHE Pipeline Group [Member] | Subsidiary Debt [Member]  
Debt Instrument [Line Items]  
Par Value 5,705
BHE Transmission [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 374
Long-term Debt, Maturities, Repayments of Principal in Year Three 394
Long-term Debt, Maturities, Repayments of Principal in Year Four 280
Long-term Debt, Maturities, Repayments of Principal in Year Five 0
Long-term Debt, Maturities, Repayments of Principal after Year Five 2,849
Par Value 3,897 [2]
HomeServices [Member] | Subsidiary Debt [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 33
Long-term Debt, Maturities, Repayments of Principal in Year Two 153
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 0
Par Value 186
Berkshire Hathaway Energy Renewables [Member] | Subsidiary Debt [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 196
Long-term Debt, Maturities, Repayments of Principal in Year Two 195
Long-term Debt, Maturities, Repayments of Principal in Year Three 200
Long-term Debt, Maturities, Repayments of Principal in Year Four 210
Long-term Debt, Maturities, Repayments of Principal in Year Five 241
Long-term Debt, Maturities, Repayments of Principal after Year Five 2,110
Par Value 3,152
BHE Pipeline Group [Member]  
Debt Instrument [Line Items]  
Par Value 5,705
BHE Pipeline Group [Member] | Subsidiary Debt [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 700
Long-term Debt, Maturities, Repayments of Principal in Year Two 0
Long-term Debt, Maturities, Repayments of Principal in Year Three 650
Long-term Debt, Maturities, Repayments of Principal in Year Four 1,050
Long-term Debt, Maturities, Repayments of Principal in Year Five 0
Long-term Debt, Maturities, Repayments of Principal after Year Five 3,305
Par Value 5,705
Berkshire Hathaway Energy [Member] | Senior Notes [Member]  
Debt Instrument [Line Items]  
Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months 450
Long-term Debt, Maturities, Repayments of Principal in Year Two 0
Long-term Debt, Maturities, Repayments of Principal in Year Three 900
Long-term Debt, Maturities, Repayments of Principal in Year Four 0
Long-term Debt, Maturities, Repayments of Principal in Year Five 1,650
Long-term Debt, Maturities, Repayments of Principal after Year Five 10,551
Par Value 13,551
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] The par values for these debt instruments are denominated in sterling.
[2] The par values for these debt instruments are denominated in Canadian dollars.