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PROPERTY, PLANT AND EQUIPMENT
 12 Months Ended
Dec. 31, 2020
Property, Plant and Equipment [Abstract]  
PROPERTY, PLANT AND EQUIPMENT PROPERTY, PLANT AND EQUIPMENT
    Property, plant and equipment as of December 31, 2020 and 2019 consisted of the following:
20202019
Land$42 $25 
Buildings and improvements526 341 
Laboratory equipment and furniture and fixtures1,974 1,788 
Leasehold improvements666 639 
Computer software developed or obtained for internal use1,209 1,106 
Construction-in-progress202 330 
4,619 4,229 
Less: Accumulated depreciation and amortization(2,992)(2,776)
Total$1,627 $1,453 

    For the year ended December 31, 2019, the Company recognized a $73 million gain in other operating expense (income), net on the sale and leaseback of a property.