XML 66 R55.htm IDEA: XBRL DOCUMENT v3.19.2
Inventories (Details) - USD ($)
$ in Millions
Jun. 30, 2019
Dec. 31, 2018
Inventories    
Finished and in process $ 520 $ 522
Raw materials 289 250
Manufacturing supplies and other 56 52
Total inventories $ 865 $ 824