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Debt And Related Expenses (Schedule of Net Financing Cost Components) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Debt Disclosure [Abstract] |  |  |  |
Interest based on debt outstanding | $ 93 | $ 92 | $ 282 | $ 277
Interest income | (11) | (19) | (43) | (22)
Other | (1) | (6) | (8) | (19)
Total net financing costs | $ 81 | $ 67 | $ 231 | $ 236

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