Investments and Restricted Cash and Cash Equivalents - BHE - Components and Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Investments:
Total investments	$ 6,479		$ 6,479		$ 8,490
Equity method investments	6,237		6,237		6,554
Restricted cash and investments	913		913		916
Total investments and restricted cash and cash equivalents	13,629		13,629		15,960
Reflected as:
Current assets	914		914		172
Noncurrent assets	12,715		12,715		15,788
Unrealized (losses) gains recognized on marketable securities still held at the reporting date	(3,168)	$ 294	(2,002)	$ 1,141
Net (losses) gains recognized on marketable securities sold during the period	(102)	0	3	1
(Losses) gains on marketable securities, net	(3,270)	$ 294	(1,999)	$ 1,142
Quad Cities Station nuclear decommissioning trust funds
Investments:
Restricted cash and investments	632		632		768
Other restricted cash and cash equivalents
Investments:
Restricted cash and investments	281		281		148
BHE Renewables tax equity investments
Investments:
Equity method investments	4,575		4,575		4,931
Iroquois Gas Transmission System, L.P.
Investments:
Equity method investments	738		738		735
Electric Transmission Texas, LLC
Investments:
Equity method investments	615		615		595
Other
Investments:
Equity method investments	309		309		293
BYD Company Limited common stock
Investments:
Total investments	5,130		5,130		7,693
Reflected as:
(Losses) gains on marketable securities, net	(3,259)
U.S. Treasury Bills
Investments:
Total investments	614		614		0
Rabbi trusts
Investments:
Total investments	417		417		492
Other
Investments:
Total investments	$ 318		$ 318		$ 305