Investments and Restricted Cash and Cash Equivalents and Investments - BHE - Components and Investments (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Investments:
Total investments	$ 3,945		$ 4,039
Equity method investments	5,597		5,711
Restricted cash and cash equivalents and investments	1,028		1,013
Total investments and restricted cash and cash equivalents and investments	10,570		10,763
Reflected as:
Other current assets	1,265		1,253
Noncurrent assets	9,305		9,510
Unrealized (losses) gains recognized on marketable securities held at the reporting date	(124)	$ 529
Net gains recognized on marketable securities sold during the period	1	170
(Losses) gains on marketable securities, net	(123)	$ 699
Quad Cities Station nuclear decommissioning trust funds
Investments:
Restricted cash and cash equivalents and investments	813		767
Other restricted cash and cash equivalents
Investments:
Restricted cash and cash equivalents and investments	215		246
BHE Renewables tax equity investments
Investments:
Equity method investments	3,937		4,058
Electric Transmission Texas, LLC
Investments:
Equity method investments	694		673
Iroquois Gas Transmission System, L.P.
Investments:
Equity method investments	605		599
Other
Investments:
Equity method investments	361		381
BYD Company Limited common stock
Investments:
Total investments	2,081		2,218
U.S. Treasury Bills
Investments:
Total investments	1,010		996
Rabbi trusts
Investments:
Total investments	512		487
Other
Investments:
Total investments	$ 342		$ 338