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Condensed Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Statement of Comprehensive Income [Abstract]    
Unrealized gain/(loss) arising during period, tax $ (5) $ (28)
Reclassification adjustment for (gain)/loss included in net earnings, tax 1 (9)
Net actuarial gain/(loss) arising during the period, tax 2 0
Amortization of actuarial loss included in net periodic pension cost, tax 0 (40)
Amortization of prior service credits included in net periodic pension cost, tax $ 6 $ 6