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Consolidated Statement of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Statement of Comprehensive Income [Abstract]      
Tax provision (benefit) on currency translation adjustment $ (221) $ 25 $ 84
Tax benefit on unrealized holding losses on hedging instruments arising during the period 20 12 0
Tax benefit on reclassification adjustment for losses on hedging instruments recognized in net income 14 6 3
Tax provision (benefit) on pension and other postretirement benefit liability adjustments arising during the period (1) (31) 2
Tax benefit on amortization of net loss and prior service benefit included in net periodic pension cost $ 4 $ 2 $ 5