v3.20.2
Inventory - Schedule of Inventory (Detail) - USD ($)
$ in Millions
Jun. 30, 2020
Dec. 31, 2019
Inventory Disclosure [Abstract]    
Raw materials $ 1,842 $ 1,428
Work in process 420 362
Finished goods 1,379 1,356
Service parts 377 406
Total $ 4,018 $ 3,552