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Inventories, net (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Inventory Disclosure [Abstract]    
Raw material and supplies $ 520 $ 485
Work in progress 117 114
Finished goods 198 199
FIFO inventories 835 798
LIFO reserve (18) (17)
Inventories, net $ 817 $ 781