XML 625 R145.htm IDEA: XBRL DOCUMENT v3.20.4
Inventories - Summary of inventories (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Classes of current inventories [abstract]    
Raw materials and purchased components $ 640 $ 675
Consumable stores 1,050 925
Work in progress 1,288 1,066
Finished goods and goods for resale 1,113 936
Total inventories 4,091 3,602
Expected to be used within one year 3,917 3,463
Expected to be used after more than one year $ 174 $ 139