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Other Financial Information Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Other Financial Information [Abstract]    
Raw materials $ 1,142 $ 1,348
Work in process 180 170
Finished goods 645 549
Total 1,967 2,067
Inventories 1,052 922
Other long-term assets $ 915 $ 1,145