Derivative Instruments and Hedging Activities (Fair Value Of Derivatives Not Designated As Hedging Instruments) (Details) - Not Designated As Hedging Instrument [Member] - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
FX Contracts Assets	$ 187	$ 154
Commodity Contracts Assets	1,343	1,337
Total fair value of derivative assets not designated as hedging instruments	1,530	1,491
FX Contracts Liabilities	122	275
Commodity Contracts Liabilities	957	1,248
Embedded Derivative, Fair Value of Embedded Derivative Liability	0	6
Embedded Derivative, Fair Value of Embedded Derivative Asset	0	0
Total fair value of derivative liabilities not designated as hedging instruments.	$ 1,079	$ 1,529

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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Fair value as of the balance sheet date of all foreign currency derivative assets not designated as hedging instruments.

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