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Investments (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Investments [Abstract]      
Equity-method investments $ 112 $ 294  
Other investments 91 19  
Total investments 203 313  
Net losses from equity-method investments 176 31 $ 135
Impairment on equity investments 165 10 $ 121
Unamortized basis difference for equity-method investments acquired 40 186  
Variable Interest Entity [Line Items]      
Current assets 3,566 3,909  
Property, Plant and Equipment, Net 34,310 34,357  
OTHER LONG-TERM LIABILITIES $ 4,217 4,198  
Mortgage note liability      
Variable Interest Entity [Line Items]      
Stated interest rate (percentage) 5.612%    
Variable Interest Entity, Primary Beneficiary      
Variable Interest Entity [Line Items]      
Current assets $ 5 3  
Property, Plant and Equipment, Net 635 490  
Current liabilities 57 28  
OTHER LONG-TERM LIABILITIES 599 470  
Variable Interest Entity, Primary Beneficiary | Mortgage note liability      
Variable Interest Entity [Line Items]      
OTHER LONG-TERM LIABILITIES $ 547 $ 400