XML 62 R42.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventories (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
LIFO method related items [Abstract]    
LIFO inventory amount $ 177 $ 133
Inventory, LIFO reserve 31 16
Inventory, net [Abstract]    
Finished products and parts 1,547 1,388
Raw materials and supplies 703 778
Work in process 146 109
Total 2,396 2,275
Obsolescence reserves $ 276 $ 263