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Derivative Instruments and Hedging Activities (Fair Value Of Derivatives Designated As Hedging Instruments) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Designated As Hedging Instrument [Member]    
Derivative [Line Items]    
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value $ 104 $ 21
Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value 0 75
Price Risk Cash Flow Hedge Asset, at Fair Value 0 86
Price Risk Cash Flow Hedge Liability, at Fair Value 20 0
Interest Rate Derivative Assets, at Fair Value 109 46
Interest Rate Derivative Liabilities, at Fair Value 0 0
Derivative Instruments in Hedges, Assets, at Fair Value 213 153
Derivative Instruments in Hedges, Liabilities, at Fair Value 20 75
Not Designated As Hedging Instrument [Member]    
Derivative [Line Items]    
Commodity Contracts Assets $ 1,337 $ 1,276