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Debt And Related Expenses (Schedule of Net Financing Cost Components) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Debt Disclosure [Abstract] |  |  |
Interest based on debt outstanding | $ 369 | $ 370 | $ 388
Gain on early retirement of debt | 0 | 0 | (30)
Interest income | (55) | (38) | (2)
Other | (6) | (23) | (27)
Total net financing costs | $ 308 | $ 309 | $ 329

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