Investments and Restricted Cash, Cash Equivalents and Investments - BHE (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Investments:
Total investments	$ 9,760		$ 9,760		$ 8,490
Equity method investments:
Equity method investments	6,330		6,330		6,554
Restricted cash and cash equivalents:
Restricted cash and investments	878		878		916
Total investments and restricted cash, cash equivalents and investments	16,968		16,968		15,960
Reflected as:
Current assets	240		240		172
Noncurrent assets	16,728		16,728		15,788
Unrealized gains recognized on marketable securities still held at the reporting date	2,527	$ 1,966	1,270	$ 847
Net gains recognized on marketable securities sold during the period	1	0	1	1
Gains on marketable securities, net	2,528	$ 1,966	1,271	$ 848
Quad Cities Station nuclear decommissioning trust funds
Restricted cash and cash equivalents:
Decommissioning fund investments, fair value	658		658		768
Other restricted cash and cash equivalents
Restricted cash and cash equivalents:
Restricted cash and investments	220		220		148
BHE Renewables tax equity investments
Equity method investments:
Equity method investments	4,680		4,680		4,931
Iroquois Gas Transmission System, L.P.
Equity method investments:
Equity method investments	742		742		735
Electric Transmission Texas, LLC
Equity method investments:
Equity method investments	606		606		595
Other
Equity method investments:
Equity method investments	302		302		293
BYD Company Limited common stock
Investments:
BYD Company Limited common stock	9,003		9,003		7,693
Rabbi trusts
Investments:
Rabbi trusts	429		429		492
Other
Investments:
Other	$ 328		$ 328		$ 305