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Supplemental Financial Information - Other Non-Current Liabilities (Details) - USD ($)
$ in Millions
Jun. 30, 2023
Dec. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Voluntary Separation Program $ 104 $ 147
Postretirement obligation 241 241
Other deferred compensation 357 331
Other 234 250
Other noncurrent liabilities $ 936 $ 969