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RESEARCH AND DEVELOPMENT COSTS (Tables)
 6 Months Ended
Jun. 30, 2021
Research and Development [Abstract]  
Schedule of research and development costs
The following table presents the Company’s gross and net expenditures on R&D activities:
Three Months Ended June 30,Six Months Ended June 30,
(in millions)2021202020212020
Gross R&D expenditures$224 $103 $444 $221 
Customer reimbursements(58)(15)(95)(24)
Net R&D expenditures$166 $88 $349 $197