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Derivative Financial Instruments (Narrative) (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Derivative [Line Items]    
Loss on Discontinuation of Cash Flow Hedge Due to Forecasted Transaction Probable of Not Occurring $ (50) $ 0
Cash flow hedge gain/(loss) to be reclassified during the next 12 months, pre-tax (53)  
Fair value of foreign exchange and commodity contracts that have credit-risk-related contingent features that are in a net liability position $ 1