Derivative Instruments and Hedging Activities (Fair Value Of Derivatives Designated As Hedging Instruments) (Details) - USD ($) $ in Millions |
Dec. 31, 2023 |
Dec. 31, 2022 |
|---|---|---|
| Designated As Hedging Instrument [Member] | ||
| Derivative [Line Items] | ||
| Derivative Instruments in Hedges, Net Investment in Foreign Operations, Assets, Fair Value | $ 0 | $ 104 |
| Derivative Instruments in Hedges, Net Investment in Foreign Operations, Liabilities, Fair Value | 22 | 0 |
| Price Risk Cash Flow Hedge Asset, at Fair Value | 16 | 0 |
| Price Risk Cash Flow Hedge Liability, at Fair Value | 0 | 20 |
| Interest Rate Derivative Assets, at Fair Value | 0 | 109 |
| Interest Rate Derivative Liabilities, at Fair Value | 0 | 0 |
| Derivative Instruments in Hedges, Assets, at Fair Value | 16 | 213 |
| Derivative Instruments in Hedges, Liabilities, at Fair Value | 22 | 20 |
| Not Designated As Hedging Instrument [Member] | ||
| Derivative [Line Items] | ||
| Commodity Contracts Assets | $ 1,343 | $ 1,337 |