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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Statement of Comprehensive Income [Abstract]      
Change in fair value of hedge derivatives, tax benefit (expense) $ (75) $ 52 $ (34)
Reclassification of change in fair value of derivatives to net income, tax (expense) benefit 78 (2) (25)
Foreign currency translation adjustments, tax expense 0 27 16
Benefit plan adjustments, tax benefit (expense) $ (19) $ 23 $ 11