v3.21.2
Investments, Loans and Long-Term Receivables - Textual (Details) - USD ($)
$ in Millions
Jun. 30, 2021
Dec. 31, 2020
Dec. 31, 2012
Equity method investments      
Loan balance with affiliated company $ 168 $ 220  
APLNG [Member]      
Equity method investments      
Project finance facility, maximum borrowing capacity     $ 8,500
Line Of Credit Facility Value Outstanding 6,000    
Book value of equity method investment 6,400    
QG3 [Member]      
Equity method investments      
Loan balance with affiliated company $ 168