Segment Information - Goodwill (Details) $ in Millions	3 Months Ended
	Mar. 31, 2021 USD ($)
Goodwill [Roll Forward]
Beginning balance	$ 11,506
Goodwill, Acquired During Period	1
Foreign currency translation	27
Ending balance	11,534
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	1,000
Foreign currency translation	6
Ending balance	1,006
BHE Pipeline Group [Member]
Goodwill [Roll Forward]
Beginning balance	1,803
Foreign currency translation	0
Ending balance	1,803
BHE Transmission [Member]
Goodwill [Roll Forward]
Beginning balance	1,551
Foreign currency translation	21
Ending balance	1,572
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	1,457
Goodwill, Acquired During Period	1
Foreign currency translation	0
Ending balance	$ 1,458