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Debt And Related Expenses (Schedule of Net Financing Cost Components) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022
Debt Disclosure [Abstract] |  |  |  |
Interest based on debt outstanding | $ 96 | $ 93 | $ 189 | $ 185
Interest income | (15) | (2) | (32) | (3)
Other | (3) | (7) | (7) | (13)
Total net financing costs | $ 78 | $ 84 | $ 150 | $ 169

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