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PREPAID EXPENSES AND OTHER CURRENT ASSETS
 12 Months Ended
Dec. 31, 2020
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
PREPAID EXPENSES AND OTHER CURRENT ASSETS PREPAID EXPENSES AND OTHER CURRENT ASSETS
Prepaid expenses and other current assets were as follows:
Year Ended December 31,
(in millions)20202019
Prepaid expenses$79 $81 
Accrued value-added tax on purchases36 46 
Deposits33 40 
Other current assets66 84 
Prepaid expenses and other current assets$214 $251