XML 51 R39.htm IDEA: XBRL DOCUMENT v3.10.0.1
Inventories - Summary of Inventory (Detail) - USD ($)
$ in Millions
Jun. 30, 2018
Dec. 31, 2017
Inventory Disclosure [Abstract]    
Raw materials & field materials $ 1,853 $ 1,846
Work in progress 525 503
Finished goods 1,742 1,697
Inventories $ 4,120 $ 4,046