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Supplemental Financial Information - Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]    
Raw materials $ 450 $ 377
Work in process 189 185
Finished goods 1,266 1,091
Inventories $ 1,905 $ 1,653