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Property, Plant and Equipment (Narrative) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Property, Plant and Equipment [Line Items]    
Gross PP&E [1] $ 61,501 $ 60,633
Construction in progress    
Property, Plant and Equipment [Line Items]    
Gross PP&E $ 2,290 $ 2,270
[1] Includes finance leases. See Note 28.