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ACCUMULATED OTHER COMPREHENSIVE LOSS (Tables)
12 Months Ended
Dec. 31, 2020
Equity [Abstract]  
Schedule of the components of accumulated other comprehensive loss
Accumulated other comprehensive loss as of December 31, 2020 and 2019 consists of:
(in millions)20202019
Foreign currency translation adjustment$(2,077)$(2,046)
Pension adjustment, net of tax(56)(40)
Accumulated other comprehensive loss$(2,133)$(2,086)