Segment Information - Goodwill (Details) $ in Millions	9 Months Ended
	Sep. 30, 2020 USD ($)
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