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INVENTORY
 12 Months Ended
Dec. 31, 2021
Inventory Disclosure [Abstract]  
INVENTORY INVENTORY
Inventory is carried at lower of cost or net realizable value using the first-in, first-out (FIFO) method. Cost components include raw materials, purchased components, direct labor, indirect labor, utilities, depreciation, inbound freight charges, purchasing and receiving costs, inspection costs, warehousing costs, and costs of the distribution network.
The components of inventory are as follows:
December 31
(In millions)20212020
Raw materials$1,096 $803 
Work-in-process620 498 
Finished goods1,253 808 
Total inventory$2,969 $2,109