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Investments and Restricted Cash and Cash Equivalents and Investments (Tables)
 6 Months Ended
Jun. 30, 2021
Restricted Cash and Cash Equivalents Items [Line Items]  
Investments and Restricted Cash
Investments and restricted cash and cash equivalents and investments consists of the following (in millions):
 As of
 June 30,December 31,
20212020
Investments:
BYD Company Limited common stock$6,727 $5,897 
Rabbi trusts472 440 
Other299 263 
Total investments7,498 6,600 
   
Equity method investments:
BHE Renewables tax equity investments5,302 5,626 
Iroquois Gas Transmission System, L.P.584 580 
Electric Transmission Texas, LLC571 594 
JAX LNG, LLC86 75 
Bridger Coal Company71 74 
Other145 118 
Total equity method investments6,759 7,067 
Restricted cash and cash equivalents and investments:  
Quad Cities Station nuclear decommissioning trust funds728 676 
Other restricted cash and cash equivalents169 155 
Total restricted cash and cash equivalents and investments897 831 
   
Total investments and restricted cash and cash equivalents and investments$15,154 $14,498 
Reflected as:
Current assets$194 $178 
Noncurrent assets14,960 14,320 
Total investments and restricted cash and cash equivalents and investments$15,154 $14,498 
Unrealized Gain (Loss) on Investments
Gains on marketable securities, net recognized during the period consists of the following (in millions):
Three-Month PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2021202020212020
Unrealized gains recognized on marketable securities still held at the reporting date$1,966 $584 $847 $609 
Net (losses) gains recognized on marketable securities sold during the period— (1)1 1 
Gains on marketable securities, net$1,966 $583 $848 $610 
Schedule of Cash and Cash Equivalents A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of June 30, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of
June 30,December 31,
20212020
Cash and cash equivalents$1,331 $1,290 
Restricted cash and cash equivalents154 140 
Investments and restricted cash and cash equivalents and investments15 15 
Total cash and cash equivalents and restricted cash and cash equivalents$1,500 $1,445 
EEGH  
Restricted Cash and Cash Equivalents Items [Line Items]  
Investments and Restricted Cash
Investments and restricted cash and cash equivalents consists of the following (in millions):
As of
June 30,December 31,
20212020
Investments:
Investment funds$13 $— 
Equity method investments:
Iroquois247 244 
Total investments260 244 
Restricted cash and cash equivalents:
Customer deposits11 13 
Total restricted cash and cash equivalents11 13 
Total investments and restricted cash and cash equivalents$271 $257 
Reflected as:
Current assets$11 $13 
Noncurrent assets260 244 
Total investments and restricted cash and cash equivalents$271 $257 
Schedule of Cash and Cash Equivalents A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of June 30, 2021 and December 31, 2020, as presented in the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of
June 30,December 31,
20212020
Cash and cash equivalents$86 $35 
Restricted cash and cash equivalents11 13 
Total cash and cash equivalents and restricted cash and cash equivalents$97 $48