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Investments in Affiliates (Summarized Balance Sheet Information) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Schedule of Investments [Line Items]        
Assets, Current $ 12,433 $ 12,081    
Other non-current assets, net 1,733 1,558    
Assets 113,698 105,643 $ 105,963  
Current Liabilities 11,277 10,368    
Equity 43,939 40,659 $ 39,345 $ 31,388
Liabilities and Equity 113,698 105,643    
Equity Method Investments [Member]        
Schedule of Investments [Line Items]        
Assets, Current 378 311    
Property, plant and equipment, net 7,582 7,722    
Other non-current assets, net 88 86    
Assets 8,048 8,119    
Current Liabilities 260 291    
Non-current liabilities 4,379 4,347    
Equity 3,409 3,481    
Liabilities and Equity $ 8,048 $ 8,119