Investments and Restricted Cash and Cash Equivalents and Investments (Tables)

12 Months Ended

Dec. 31, 2021

Investments, Including Equity Method And Restricted Cash And Investments [Line Items]

Schedule of Investments and Restricted Cash and Investments

Investments and restricted cash and cash equivalents and investments consists of the following as of December 31 (in millions):

	2021		2020
Investments:
BYD Company Limited common stock	$	7,693	$	5,897
Rabbi trusts	492		440
Other	305		263
Total investments	8,490		6,600
Equity method investments:
BHE Renewables tax equity investments	4,931		5,626
Iroquois Gas Transmission System, L.P.	735		580
Electric Transmission Texas, LLC	595		594
JAX LNG, LLC	92		75
Bridger Coal Company	45		74
Other	156		118
Total equity method investments	6,554		7,067
Restricted cash and cash equivalents and investments:
Quad Cities Station nuclear decommissioning trust funds	768		676
Other restricted cash and cash equivalents	148		155
Total restricted cash and cash equivalents and investments	916		831
Total investments and restricted cash and cash equivalents and investments	$	15,960	$	14,498
Reflected as:
Other current assets	$	172	$	178
Noncurrent assets	15,788		14,320
Total investments and restricted cash and cash equivalents and investments	$	15,960	$	14,498

Schedule of Unrealized Gain (Loss) on Investments

Gains (losses) on marketable securities, net recognized during the period consists of the following for the years ended December 31 (in millions):

	2021		2020		2019
Unrealized gains (losses) recognized on marketable securities held at the reporting date	$	1,819	$	4,791	$	(290)
Net gains recognized on marketable securities sold during the period	4		6		2
Gains (losses) on marketable securities, net	$	1,823	$	4,797	$	(288)

MEC

Investments, Including Equity Method And Restricted Cash And Investments [Line Items]

Schedule of Investments and Restricted Cash and Investments

Investments and restricted investments consists of the following amounts as of December 31 (in millions):

	2021		2020
Nuclear decommissioning trust	$	768	$	676
Rabbi trusts	233		211
Other	25		24
Total	$	1,026	$	911

EEGH

Investments, Including Equity Method And Restricted Cash And Investments [Line Items]

Schedule of Investments and Restricted Cash and Investments

Investments and restricted cash and cash equivalents consists of the following as of December 31 (in millions):

	2021		2020
Investments:
Investment funds	$	13	$	—
Equity method investments:
Iroquois	399		244
Total investments	412		244
Restricted cash and cash equivalents:
Customer deposits	17		13
Total restricted cash and cash equivalents	17		13
Total investments and restricted cash and cash equivalents	$	429	$	257
Reflected as:
Current assets	$	17	$	13
Noncurrent assets	412		244
Total investments and restricted cash and cash equivalents	$	429	$	257