XML 107 R96.htm IDEA: XBRL DOCUMENT v3.20.2
Inventories - Summary of Inventories (Detail) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2020
Dec. 31, 2019
Inventories other than work in progress    
Inventories stated at net realizable value $ 287 $ 171
Current Inventories [member]    
Disclosure of inventories [line items]    
Prepayments 75 105
Raw materials and consumables 2,356 2,478
Work in progress 418 405
Finished goods 1,306 1,257
Goods purchased for resale 185 182
Inventories $ 4,339 $ 4,427